Android APP Contact Us
login / register Upload
TRENDING:

Voice Echo Processor Module – Delay Device for Sound Effects, Echo, Reverb 

The voice echo or digital delay sound effects project presented here is suitable for applications such as Karaoke, multimedia, musical instrument effects, electronics toys, animatronics, etc. The project is based on PT2399 chip, with an operating supply of 5V DC, and approx. 30mA current consumption. Two potentiometers are provided to set the delay and repeat. The delay range is adjustable from 50ms to 280ms.

The PT2399 is a single-chip echo processor IC utilizing CMOS technology. It accepts analog audio input signal, and a high sample rate ADC converts the analog signal into a bit stream that is stored in internal 44Kbit RAM. After processing the bit stream it will be de-modulated by DAC and lowpass filter. The overall delay time is determined by the internal VCO clock frequency, and the user can easily change the VCO frequency by changing the external resistance. The PT2399 performs low distortion (THD<0.5%@0.5Vrms) and low noise (No<-90dBV) characteristics for audio purposes.

Note1: With this board, the delay range is 50ms to 280ms which is adjustable using the potentiometer. The actual delay range is 31.3ms to 342ms, to achieve this alter the value of resistor R9 and Trimmer potentiometer PR2.

Note2: The PCB has provision to mount Trimmer pot or 16MM potentiometer, install any of this as per requirement, PR1 Trimmer Pot = P1 16MM potentiometer, PR2 Trimmer Pot = P2 16MM potentiometer.

Connections and Other Important Details

  • CN1: Power Supply Input >> Pin1 = VCC 5V DC, Pin2 = VCC 5V DC, Pin3 = GND, Pin4 = GND
  • CN2: Audio Signal Input from Musical Instruments or Microphone Preamplifier >> Pin1 = Audio Signal Input, Pin2= GND
  • CN3: Audio Signal Output >> Pin1 = Audio Signal Output, Pin2= GND
  • CN4: Optional 3.5MM EP Female Connector for Audio Output
  • CN5: Optional 3.5MM EP Female Connector for Audio Input
  • PR1 or P1: Potentiometer to Adjust the Delay
  • PR2 or P2: Potentiometer to Adjust the Repeat
  • D1: Power LED

Features

  • Power Supply 5V DC @ 30mA
  • Delay Range 50ms to 280ms (Read Note 1)
  • Accept Standard Audio Signal
  • On Board Potentiometer for Delay Adjust
  • On Board Potentiometer for Repeat Adjust
  • On Board Power LED
  • EP Socket for Audio Signal Input and Output
  • Optional 2 Pin x 2 Header Connector for Audio Input and Output
  • 4 x 3MM Mounting Holes
  • PCB Dimensions 48.10 x 38.58mm

Applications

  • KARAOKE Mixer
  • CD/DVD Player/Recorder
  • Multimedia
  • Animatronics
  • Music Instrument effecter
  • Electronics Toy

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIERPART NO
11CN14 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY 732-5317-ND
21CN22 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY 732-5315-ND
31CN32 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY 732-5315-ND
42CN4,CN53.5MM STEREO EP SOCKET FEMALECUI AUDIODIGIKEY CP1-3525N-ND
51C13K9PF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
62C2,C64.7uF/50V OR 16-25V ELECTROLYTICPANASONICDIGIKEY P10321-ND
73C3,C16,C170.1uF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
81C4100uF/16V OR 25V ELECTROLYTICUNITED CHEMDIGIKEY 565-EMHL250ARA101MF80GCT-ND
92C5,C910uF/50V ELECTROLYTICNICHICONDIGIKEY 493-12569-1-ND
102C7,C10560PF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
111C847uF/16V OR 25V ELECTROLYTICNICHICONDIGIKEY 493-10997-1-ND
121C110.01uF/50V SMD SZIE 0805YAGEO/MURATADIGIKEY
132C12,C148K2PF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
142C13,C15DNP
151C183K3PF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
161D1LED RED SMD SIZE 0805LITE ON INCDIGIKEY 160-1427-1-ND
171PR150K POTEMTIOMETER PCB MOUNT 16MMBOURNS INCDIGIKEY PDB181-K220K-503B-ND
181PR220K POTENTIOMETER PCB MOUNT 16MMBOURNS INCDIGIKEY PDB181-K420K-203B-ND
192R1,R1215K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
201R2100K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
211R31K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
221R44K7 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
235R5,R6,R7,R10,R1110K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
241R85K6 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
251R92.2K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
261R130E SMD SIZE 0805YAGEO/MURATADIGIKEY
271U1PT2399 SMD SO16EBAYDIGIKEY http://www.princeton.com.tw

Connections

Block Diagram

VCO Frequency Table

Gerber View

Photos

Video

PT2399 Datasheet

e-con Systems launches AR0821 based 4K HDR GMSL2 multi-camera for NVIDIA Jetson AGX Orin™

Posted on by mixos

onsemi AR0821 | 4K resolution | HDR | GMSL2 | Multi-camera | NVIDIA Jetson AGX Orin™

e-con Systems™, a leading embedded camera company, launches NileCAM81_CUOAGX, a 4K HDR GMSL2 multi-camera solution for NVIDIA Jetson AGX Orin™ / AGX Xavier™ based on the half-inch AR0821 sensor from onsemi ™.

NileCAM81_CUOAGX is based on the half-inch AR0821 sensor from onsemi. It comes with a pixel size of 2.1µm x 2.1µm, thereby offering high sensitivity. This in combination with its high resolution of 4K helps to capture images with great details even in extremely low lighting conditions.

NileCAM81_CUOAGX is also an HDR camera that uses multiple exposures in a single frame to bring out details in the brightest as well as darkest areas of the same scene in high-contrast lighting conditions.

Further, NileCAM81_CUOAGX is a multi-camera solution. Hence, it has multiple camera pipelines that transfer high-resolution images and videos. Owing to this, it is designed to be compatible with high-performance host platforms like NVIDIA Jetson AGX Orin™ and NVIDIA Jetson AGX Xavier™.

With these features, this 4K multi-camera solution is suitable for applications such as Surround-view systems, autonomous mobile robots, smart trolleys, smart checkout systems, smart traffic management, sports broadcasting & analytics, and agricultural robots & tractors.

“NVIDIA Jetson ORIN and AGX Xavier, are the most powerful energy efficient processors for autonomous machines. Such machines require superior quality video feed for object detection, recognition and characterization. 4K video feed and HDR performance are essential for such operations. NileCAM81_CUOAGX is a perfect fit for such applications. The NileCAM81_CUOAGX is based on 1/2inch 4K sensor AR0821 with High dynamic range (HDR – up to 140dB.). The built in ISP allow the user to get the best in class performance with zero processing on the host. NileCAM81 comes with automotive grade GMSL2 interface to withstand high vibration which makes the camera ideal for various different kinds of robots”, said Gomathi Sankar, BU Head – Industrial cameras at e-con Systems™.

Key features of NileCAM81_CUOAGX

  • AR0821 sensor – Captures 4K images with great details even in low lighting conditions.
  • High Dynamic Range – Helps to capture image data in challenging outdoor lighting conditions without any detail loss.
  • GMSL2 – Can connect up to 6 cameras to the host platform and reliably transmit video data up to a distance of 15m with very low latency.
  • NVIDIA Jetson AGX Orin™ / AGX Xavier ™ compatibility – Delivers high-quality images to leverage Jetson AGX Orin’s server-class AI performance at the edge. This in turn helps product developers build next-generation intelligent machines with end-to-end autonomous capabilities.
  • Image Signal Processor – Helps in providing the best possible output by leveraging HDR processing, auto white balance, auto gain control, and auto exposure functions.

Have a look at the introduction video of NileCAM81_CUOAGX to learn more about the features and applications of the camera.

Video

Availability

Customers interested in evaluating NileCAM81_CUOAGX can purchase the product from e-con Systems’ online store. Please visit the NileCAM81_CUOAGX product page and click the buy now button to navigate to the webstore for purchasing the product.

Customization and integration support

With a proper understanding of customers’ pain points, e-con Systems™ also offers customization services for NileCAM81_CUOAGX that reduce your efforts on prototyping, product integration, and product deployment. Please write to us at camerasolutions@e-consystems.com if you are looking for any customization or integration support.

About e-con Systems™

Established in 2003, e-con Systems has grown into a leading OEM camera solution provider with a wide global footprint. We provide end-to-end camera solutions like MIPI camera modules, GMSL cameras, USB 3.1 Gen 1 cameras, stereo cameras, and more. Over the years, we have reimagined how they are used in applications such as retail, medical, industrial, agriculture, smart city, etc.

We are also powered by a strong partner ecosystem including sensor partners, ISP partners, carrier board partners, etc. This enables us to offer end-to-end vision solutions. So far, we have built 250+ product solutions – shipping over 2 million cameras across 90+ countries around the globe.

For more information, please contact:

Note: References to corporate, product, or other names may be trademarks or registered trademarks of their respective owners.

Ultra-High-Speed, Low-Distortion – Differential-to-Single-Ended Line Receivers with Enable

The project presented here is a differential line receiver that offers unparalleled high-speed, low-distortion performance and is ideally suited for digital, video, and RF signal-processing applications. These receivers offer a small-signal bandwidth of 550MHz and have a high slew rate of up to 2000-3800V/µs. The board’s 120mA output capability allows it to be directly coupled to data acquisition systems. The project has been designed using the MAX4445 chip, which has a three-op amp instrumentation amplifier architecture. These ICs have symmetrical differential inputs and a single-ended output. The project operates from ±5V supply and is capable of driving a 100Ω load to ±3.7V.  MAX4445 is compensated for gains of +2V/V or greater, set by an external resistor R3. A low-power enable mode reduces current consumption to 3.5mA. Using current-feedback techniques, the MAX4445 achieves a 550MHz bandwidth while maintaining up to a 5000V/µs slew rate. Excellent differential gain/phase and noise specifications make these amplifiers ideal for a wide variety of digital, video, and RF signal-processing applications. It is important to make a Gold-plated high-quality PCB and use high-grade components and connectors to operate at high frequency.

The project is compatible and can be paired with our Wideband, High-Output-Current – Single Ended-to-Differential Line Drivers with Enable that has been published in past.

Low-Power Enable Mode

The chip is disabled when Enable pin goes low. This reduces the supply current to only 3.5mA. In this case, the output becomes high impedance.  The effective output impedance for the MAX4445 is 1.8kΩ plus RGAIN (Resistor R3)

Setting Gain (Resistor R3) – Default Gain +2V/V

The MAX4445 is stable with a minimum gain configuration of +2V/V. RGAIN R3, connected between the RG pins. Gain can be changed using the below formula:

Gain = (1 + 600 / RGAIN)

Coaxial Line Driver

The project is well suited to drive coaxial cables. The high output current capability can easily drive the 75Ω characteristic impedance of common coaxial cables. Adjust the gain of the MAX4445 to compensate for cable losses to maintain the required levels at the input of the next stage.

Key Features

  • Operating Power Supply +/-5V DC (Dual 5V DC)
  • Output Current Drive 90 to 120mA (Load 30 Ohms)
  • Output Swing +/-3.3V
  • 2000-3800V/µs Slew Rate
  • External Gain Selection AVCL ≥ +2V/V
  • 550MHz -3dB Bandwidth
  • -60dB SFDR at 5MHz
  • Low Differential Gain/Phase: 0.07%/0.05°
  • Low Noise: 25nV/ at fIN = 100kHz
  • Low-Power Disable Mode Reduces Quiescent Current to 3.5mA
  • PCB Dimensions 36.20 X 28.89 mm

Applications

  • Data Acquisition
  • Differential to Single-Ended Conversion
  • High-Speed Differential Line Receiver
  • High-Speed Instrumentation Amplifier
  • Medical Instrumentation
  • Twisted-Pair to Coaxial Converter

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIERPART NO
11CN12 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
21CN23 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1248-ND
31CN36 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5319-ND
42C1,C310uF/16VYAGEO/MURATADIGIKEY
52C2,C40.1uF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
61D1LED RED SMD SIZE 0805LITE ON INCDIGIKEY160-1427-1-ND
71J12 PIN MALE HEADER FOR JUMPERWURTHDIGIKEY732-5315-ND
83R1,R2,R449.9E 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
91R3600E 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
101R51M 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
111R6470E 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
121U1MAX4445ANALOG DEVICEDIGIKEYMAX4445ESE+-ND
131J1-SSHUNT FOR JUMPER 1SULLINS CONCTDIGIKEYS9001-ND

Connections

Gerber View

Photos

Video

MAX4445 Datasheet

Over Current Trip Switch – Over Current Shutdown Relay

The project presented here is an over-current trip switch. It provides protection to a load when over current condition occurs. Basically, the project trips the relay when there is a short circuit or the load starts drawing much current. When the condition is favorable, press the tactile switch to power the load again. The threshold voltage of the comparator is 0.6V, the over-current limit can be adjusted using the trimmer Potentiometer PR1. Operating supply 12V DC @ 80mA when the relay is ON, load supply 0V to 48V.

The project is built using INA202 chip from Texas Instruments. The INA202 chip includes the high-side current-shunt monitor with voltage output and an integrated comparator. The device measures current through the shunt resistor R1 with current flowing in one direction that enables detection of an overcurrent event only when the differential input voltage exceeds the threshold limit. When the current reaches the set limit of the divider R7/ PR1, the output of CMPOUT transitions high, which turns Q1 on, pulls the base of the BJT transistor Q2 low which then switches OFF the relay, and turns the flow of the current OFF through relay contacts.

Trip Current Threshold

Trip current is adjustable from 250mA to 3A, PR1 trimmer potentiometer is provided to adjust the trip current, and load supply range is from 0 to 48V.

This project can be used for higher current trip and higher Voltage load with a few changes. Please refer to Datasheet for more details.

  • Shunt Resistor R1 (Choose a lower value for higher current Trip), Maximum range 30A (Due to Relay Contacts Limit of 30A)
  • R7 and PR1/Optional R13 Resistor Divider (Trip Voltage Threshold), Internal Reference Threshold 0.6V
  • For Higher voltage up to 80V, Choose Capacitor C1 and C2 100V
Note: Single Supply operation is possible, if the load supply is 12V DC, tie VDD Pin to +DC for single Supply.

Connections and Other Details

  • CN1: Load Supply Input 0 to 48V DC, Current Up to 5 Amps (Pin 1 = + DC Input, Pin 2 = GND)
  • CN3: Load Connection (Pin 1 = + DC Output, Pin 2 = GND)
  • CN2: Logic Supply 12V DC @ 80mA (Pin 1 = VDD, Pin 2 = VDD, Pin 3 = GND, Pin 4 = GND)
  • LED D3: Power LED
  • LED D2: Function LED (LED On = Relay Function)
  • Jumper J1: Latch or Non-Latch (Connect to VCC for Latch)
  • PR1: Trip Current Adjust 250mA to 3Amps (Approx.)

Features

  • Operating Supply 12V DC @ 80mA
  • Load Supply 0 to 48V DC (Higher Voltage up to 80V Possible Read Note)
  • Load Current Trip Range 250mA to 3Amps Approx.
  • Power LED and Function LED
  • Screw Terminals for Load Supply and Load
  • Header Connector for Load Switch
  • Trimmer Potentiometer for Trip Threshold Adjust
  • 4 x 4 mm Mounting Holes
  • PCB Dimensions 71.12 x 37.94mm

Schematic

 

Parts List

NOQNTY.REF.DESC.MANUFACTURERSUPPLIERPART NO
12CN1,CN32 PIN SCREW TERMINAL PITCH 2.54MMPHOENIXDIGIKEY277-1247-ND
21CN24 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5317-ND
31C10.22uF/50V SMD SIZE 1206YAGEO/MURATADIGIKEY
41C2100uF/50VNICHICONDIGIKEY493-4508-1-ND
51C3100uF/50V OR 100uF/25VNICHICONDIGIKEY493-4508-1-ND
62C4,C60.1uF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
71C5100PF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
83C7,R12,R13DNP
91D1SM4007SMC DIODEDIGIKEY1655-1N4007FLCT-ND
102D2,D3LED RED SMD SIZE 0805LITE ON INCDIGIKEY160-1427-1-ND
111J13 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5316-ND
121PR110K MULTI-TURN TRIMMER POTBOURNSDIGIKEY3296Y-103LF-ND
131Q1BC847ALINFINIONDIGIKEYBC847BE6327HTSA1CT-ND
141Q2MPSA29 OR (BC817-CHECK PIN CONFIGRATION)ONSEMIDIGIKEYMPSA29-ND
151RE112V/30A RELAYCIT RELAYDIGIKEY2449-L115F11CM12VDCS.9-ND
161R10.01E/2W SMD SIZE 2512VISHAY DALEDIGIKEY541-WSL2512R0100FTA18CT-ND
173R2,R3,R10100E 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
182R4,R54.7K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
192R6,R91K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
201R75.1K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
212R8,R112.2K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
221SW1TACTILE SWITCHTACTILE SWITHDIGIKEYEG2510-ND
231U1LM7805 DPKONSEMIDIGIKEYMC78M15ABDTRKGOSCT-ND
241U2INA202TIDIGIKEY296-INA202AID-ND
251J1-SSHUNT FOR JUMPERSULLIN CONNECTORDIGIKEYS9001-ND

Connections

Gerber View

Photos

Video

INA202 Datasheet

Mono 2W – Switch-Mode (Class D) Audio Power Amplifier

This is a compact size, mono, switch-mode (Class-D) audio power amplifier intended for multimedia and general-purpose high-power applications. It has greater than 87% efficiency and is capable of delivering 2W maximum continuous power to a 4Ω load. The project is designed to be driven by the line-out or headphone jack of a CD/MP3 player or to be directly connected to any audio source. The project includes header connectors for speakers, power supply, and audio input for quick connection. The project also has 3x jumpers for frequency selection and shutdown action. The project is built using the MAX4295 chip.

Undervoltage Lockout

At low supply voltages, the MOSFETs in the H-bridge may have inadequate gate drive thus dissipating excessive power. The Undervoltage lockout circuit prevents the device from operating at supply voltages below +2.2Vdc.

Low-Power Shutdown Mode (Jumper J3 for Shutdown)

The MAX4295 has a shutdown mode that reduces power consumption and extends battery life. Driving SHDN low disables the H-bridge, turns off the circuit, and places the MAX4295 in a low-power shutdown mode. Connect SHDN to VCC using jumper 3 for normal operation.

Frequency Selection (Jumper J1 and J2 For Frequency Selection)

The MAX4295 has an internal logic-programmable oscillator controlled by FS1 and FS2 (see table below). The oscillator can be programmed to frequencies of 125kHz, 250kHz, 500kHz, and 1MHz. The working frequency should be chosen to best fit the user application. As a rule of thumb, choose fOSC to be 10x times the audio bandwidth. A lower switching frequency offers higher amplifier efficiency and lower THD but requires larger external filter components. A higher switching frequency reduces the size and cost of the filter components at the expense of THD and efficiency. In most applications, the optimal fOSC is 250kHz.

Connections and Other Details

  • CN1: Pin 1 and Pin 2 = VCC, Pin and Pin 4 = GND (VCC Supply 2.7V to 5.5V DC)
  • LS1: Pin 1 and Pin 2 = Speaker 1, Pin 3 and Pin 4 = Speaker 2
  • CN2: Pin 2 Audio Signal Input, Pin 1 GND
  • Jumpers J1 and J2: Frequency select pins FS1 and FS2. See Table for the shunt positions.
  • Jumper J3: Shutdown selection, GND= Shutdown
  • D1: Power LED

Features

  • Operating Power Supply +2.7V to +5.5V Input Range (1.5A)
  • 2W Channel Output Power at 5V
  • 7W/Channel Output Power at 3V
  • 87% Efficiency (RL = 4Ω, POUT = 2W)
  • Programmable PWM Oscillator Frequency Selection (125kHz, 250kHz, 500kHz, 1MHz)
  • Low 0.4% THD+N (RL = 4Ω, fIN = 1kHz, fOSC = 250kHz)
  • Low-Power Shutdown Mode
  • 1A Current Limit and Thermal Protection
  • Click fewer Transitions into and Out of Shutdown
  • PCB Dimensions 31.59 x 28.42 mm

The MAX4295 switch-mode, Class D audio power amplifier is intended for portable multimedia and general-purpose audio applications. Linear amplifiers in the 1W to 2W output range are inefficient; they overheat when operated near rated output power levels. The efficiency of linear amplifiers is <50% when the output voltage is equal to 1/2 the supply. The MAX4295 Class D amplifier achieves efficiencies of 87% or greater and is capable of delivering up to 2W of continuous maximum power to a 4Ω load. The lost power is due mainly to the on-resistance of the power switches and ripple current in the output.  In a Class D amplifier, a PWM controller converts the analog input to a variable pulse-width signal. The pulse width is proportional to the input voltage, ideally 0% for a 0V input signal and 100% for full-scale input voltages. A passive lowpass LC network filter the PWM output waveform to reconstruct the analog signal. The switching frequency is selected much higher than the maximum input frequencies so that intermodulation products are outside the input signal bandwidth. Higher switching frequencies also simplify the filtering requirements. The MAX4295 consists of an inverting input operational amplifier, a PWM ramp oscillator, a controller that converts the analog input to a variable pulse-width signal, and a MOSFET H-bridge power stage. The control signal is generated by the PWM comparator; its pulse width is proportional to the input voltage. Ideally the pulse width varies linearly between 0% for a 0V input signal and 100% for full-scale input voltages. This signal controls the H-bridge. The switches work in pairs to reverse the polarity of the signal in the load. Break-before-make switching of the H-bridge MOSFETs by the driver circuit keeps supply current glitches and crowbar current in the MOSFETs at a low level. The output swing of the H-bridge is a direct function of the supply voltage. Varying the oscillator swing in proportion to the supply voltage maintains constant gain with varying supply voltage. FS1 and FS2 program the oscillator to a frequency of 125kHz, 250kHz, 500kHz, and 1MHz. The sawtooth oscillator swings between GND and 0.6 x VCC. The input signal is typically AC-coupled to the internal input op-amp, whose gain can be controlled through external feedback components. The common-mode voltage of the input amplifier is 0.3 x VCC and is internally generated from the same resistive divider used to generate the 0.6 x VCC reference for the PWM oscillator.

Schematic

Parts List

NOQNTY.REF.DESC.MANUFACTURERSUPPLIERPART NO
11CN14 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5317-ND
21CN22 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
31C14.7uF/10V SMD SIZE 0805YAGEO/MURATADIGIKEY
43C2,C5,C71uF/25V SMD SIZE 0805YAGEO/MURATADIGIKEY
53C3,C6,C80.1uF/25V SMD SIZE 0805YAGEO/MURATADIGIKEY
61C4330uF/6.3V SMD ELECTROLYTICPANASONICDIGIKEY10-EEE-FKJ331XALCT-ND
71C9150PF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
81C105PF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
91D1LED RED SMD SIZE 0805LITE ON INCDIGIKEY160-1427-1-ND
101J12 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
111J22 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
121J32 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
131LS12 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
142L1,L215uHTAIYO UDEN587-2630-1-ND
151R11K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
162R2,R351K 1% SMD SIZE 0805YAGEO/MURATADIGIKEY
171R4100K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
181U1MAX4295ANALOG DEVICESDIGIKEYMAX4295EEE+-ND
193J1-SSHUNT FOR J1, J2, J3SULLINS CONCTDIGIKEYS9001-ND

Connections

Frequency Table

Gerber View

Photos

Video

MAX4295 Datasheet

4 Channel High-Speed – Robust-EMC Reinforced Digital Isolators

The project described here is a high-performance, quad-channel digital isolator with a 5000VRMS isolation rating as per UL1577. The ISO7740 IC provides high electromagnetic immunity and low emissions at low power consumption while isolating CMOS or LVCMOS digital I/O s. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO2) insulation barrier. The project comes with enable pins that can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption. The project is based on the ISO7740 chip that has all four channels in the same direction. If the input power or signal is lost, the output becomes high by default.

Used in conjunction with isolated power supplies, this project helps reduce noise currents on data buses, such as RS-485, RS-232, and CAN, or other interfaces, from entering the local ground and interfering with or damaging sensitive circuitry. Through innovative chip design and layout techniques, electromagnetic compatibility of the ISO7740 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance.

Connections and Other Details

  • CN1: Pin1= VCC1 (VCC Input Side 2.25V TO 5.5V), Pin2= Input 1, Pin3=Input 2, Pin4= Input 3, Pin5= Input 4, Pin6= NC (Not Connected), GND1
  • CN2: Pin1=VCC2 (VCC Output Side 2.25V to 5.5V), Pin2=Output 1, Pin3=Output 2, Pin4=Output 3, Pin5=Output 4, Pin6=Enable, Pin7=GND2
  • LED D1 Power LED Input Side
  • LED D2 Power LED Output Side
Note: The project is by default enabled, and all outputs are normally HIGH. Connecting ENABLE pin to GND disables the outputs and outputs go LOW.

Features

  • Wide Supply Range: 2.25 V to 5.5 V Output Side
  • Wide Supply Range: 2.25 V to 5.5 V Input Side
  • Level Translation Range: 2.25V to 5.5V
  • 2 x Power LED Input Side and Output Side
  • 100 Mbps Data Rate
  • Robust Isolation Barrier
  • 100-year projected lifetime at 1500 VRMS working voltage
  • Up to 5000 VRMS isolation rating
  • Up to 12.8 kV surge capability
  • ±100 kV/µs typical CMTI
  • Default output high
  • Wide temperature range: –55°C to 125°C
  • Low power consumption, typical 1.5 mA per channel at 1 Mbps
  • Low propagation delay: 10.7 ns typical (5-V Supplies)
  • Robust electromagnetic compatibility (EMC)
  • System-level ESD, EFT, and surge immunity
  • ±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier
  • Low emissions
  • PCB Dimensions 40.64 x 27.94 mm
  • 5 x 4 mm Mounting Holes

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIERPART NO
12CN1,CN27 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5320-ND
22C1,C310uF/10V SMD SIZE 1206YAGEO/MURATADIGIKEY
32C2,C40.1uF/50V SMD SIZE 0805YAGEO/MURATADIGIKEY
42D1,D2LED RED SMD SIZE 0805LITE ON INCDIGIKEY160-1427-1-ND
52R1,R21K 5% SMD SIZE 0805YAGEO/MURATADIGIKEY
61R34.7K 5% SMD SIZE 0895YAGEO/MURATADIGIKEY
71U1ISO7740DWRTIDIGIKEY296-44607-1-ND

Connections

Block Diagram

Simplified Schematic

Gerber View

Photos

Video

ISO7740 Datasheet

Bluetooth based PIR motion detecting application using STM32 board

Posted on by mixos

1. Introduction

In this project, we will use a PIR sensor to detect motion. Once motion is detected, it will trigger an interrupt and the BleuIO dongle connected to the board will advertise for 25 seconds. You can expand the project based on your needs further.

A PIR (passive infrared) Sensor is an electronic device that detects heat from a human or animal body, giving a detection signal when movement happens in a given area or range of the sensor.

For this project, we will need one dongle and a PIR sensor (for example https://www.digikey.com/short/4v12z2nw).
When the BleuIO Dongle is connected to the Nucleo board USB port the STM32 will recognize it and set up a new device name for the dongle: BleuIO PIR Detected. This will show up when the dongle is advertising.

2. Using the example project

2.1 What we will need

3. How to setup project

3.1 Downloading the project from GitHub

Get project HERE

URL: https://github.com/smart-sensor-devices-ab/stm32_bleuio_pir_example

Either clone the project or download it as a zip file and unzip it, into your STM32CubeIDE workspace.

3.2 Importing as an Existing Project

  • From STM32CubeIDE choose File>Import…

  • Then choose General>Existing Projects into Workspace then click ‘Next >’

  • Make sure you’ve chosen your workspace in ‘Select root directory:’
  • You should see the project “stm32_bleuio_pir_example”, check it, and click ‘Finish’.

If you download the project as a zip file you will need to rename the project folder from ‘stm32_bleuio_pir_example-master’ to ‘stm32_bleuio_pir_example’

4. Connecting the sensor

Connect the PIR Sensor Gnd to ground and Vdd to power and Output to a pin of your choice on the Nucleo board (In the example we use PA0)

If you want a different PIN you will need to go into the STM32Cube ioc file and make some edits:

  • Click on PA0 and select Reset_State in the STM32Cube ioc file.
  • Click on your desired Pin and select EXTIO

  • Then go to GPIO under System Core and make sure you set up the pin as follows:

    GPIO mode: External Interrupt Mode with Rising edge trigger detection

    GPIO Pull-up/Pull-down: Pull-down

  • Then go to NVIC under System Core and make sure EXTI line0 interrupt is enabled

5. Running the example

  • In STMCubeIDE click the hammer icon to build the project.
  • Open up the ‘STMicroelectronics STLink Viritual COM Port’ with a serial terminal emulation program like TeraTerm, Putty or CoolTerm.
Baudrate: 115200
Data Bits: 8
Parity: None
Stop Bits: 1
Flow Control: None
  • In STMCubeIDE click the green play button to flash and run it on your board. The first time you click it the ‘Run Configuration’ window will appear. You can just leave it as is and click run.
  • Connect the BleuIO Dongle.

6. Output

When the PIR sensor detects movement it will trigger an interrupt that will tell the BleuIO Dongle to advertise for 25 seconds. Just so the PIR Sensor will not trigger constantly we have put a 20-second timeout before it will start again. If no new interrupts have been detected after the 25-second advertising timer has run out the BleuIO Dongle will stop advertising and wait for a new interrupt to happen.

The yellow LED on the STM32 board also toggles if there is a movement.

I hope you found this article informative.

Demo platform enables study of micro-energy harvesting apps

Posted on by mixos

Trameto, a manufacturer of power management semiconductors for energy harvesting (EH PMICs) announces a demonstration platform that enables engineers to quickly evaluate how micro-energy harvesting can reduce or eliminate the use of batteries in IoT devices such as sensors and the wireless modules to which they may be connected.

It is based on Trameto’s OptiJoule technology and uses an engineering sample of the TM2040, a four-input, smart EH PMIC from the product family. Up to four harvesters of the same or mixed types can be connected to any of its inputs without additional interface components, providing the simplest, most effective, and most economical way to cut battery dependency in wireless IoT applications.

The demonstration platform includes two photovoltaic harvesters, a piezoelectric harvester with a DC motor to generate vibration for it, two thermoelectric generators, and a heater and heatsinks to provide a stimulus for the thermoelectric generators. Each harvester produces microjoules to millijoules of energy and easily connects to the main platform using plugin daughterboards.

Uniquely, each of the TM2040’s inputs will adapt autonomously to the type of harvester connected to it. The chip then optimizes each harvester’s output using patented circuits that also dynamically combine the maximum available energy from all of the connected harvesters. The optimized output delivers a controlled charge to an energy-storage component which is then automatically switched via the EH PMIC to power an IoT device with a 1.8V DC, regulated supply at up to 15mA.

The demonstration platform comes complete with a Windows application to display harvested power and TM2040 status information from the platform via a simple graphical user interface.

Huw Davies, CEO of Trameto, commented:

“Energy harvesting can only be economically realized for IoT applications if every available source of energy can be exploited. The TM2040 OptiJoule EH PMIC is the only power management device able to do this economically, replacing up to four traditional PMICs and eliminating the cost and complexity of the interface components that are often needed for some energy harvesters. This demonstration platform provides the easiest way for engineers to explore the opportunities to power their devices using a range of energy harvesting technologies.”

The TM2040 demonstration platform is available from Trameto now and a user guide can be downloaded https://trameto.com/resources/.

A single-input version of the autonomously adaptable PMIC is also available.

Eliminate the need for disposable batteries with an indoor light power

Posted on by mixos

Epishine has developed a solar cell optimized for indoor use. The light energy harvesting (LEH) modules are optimized to convert light from indoor lighting into enough energy to power small electronic devices.

The LEH module is only 0.2mm thick, making it straightforward to fit into different devices without adding thickness to it. The module also fits on curved surfaces with a bending radius of 10mm.

The module can be connected more or less directly to the application for applications that only require to be powered when there is light, like an access card or a thermometer.

In applications where power is needed, even when there is no light available or if the momentary power required is more than the LEH module can deliver, an energy storage solution like a small super cap or rechargeable battery can be implemented. The LEH module charges the energy storage when light is available, and the storage solution power the application when needed.

Examples of applications built in this way are sensors that communicate wirelessly, including temperature and humidity sensors or fire detectors.

Its standard sizes of cells have an active area of 50mm by 20, 30 or 50mm.

Video

Its LEH3 modules mainly comprise PET based on hydrocarbons and are non-toxic to the environment. It is usually the batteries that have the greatest Life Cycle Assessment (LCA) impact in this type of electronics. Most energy harvesting applications require a small energy storage as part of the power solution, but when you can change from a battery that stores energy for several years (with no energy harvesting) to something that stores some days of energy, the LCA calculation is significantly improved.

more information: https://www.epishine.com

HARTING 3D-MID Component Carriers

Posted on by mixos

HARTING 3D-MID Component Carriers enable alternative component positioning and mounting utilizing fully automated assembly and soldering. These 3D molded interconnect devices can replace circuit boards utilizing a 3-dimensional circuit on molded plastic. This 3D shape can allow for more compact integration of electrical components into the available space. HARTING 3D-MID Component Carriers utilize a high-temperature thermoplastic, enabling compatibility with reflow soldering.

Features

  • Universal design of substrate
  • Customized layout for traces
  • High-temperature plastic for reflow soldering
  • Shipped in tape and reel as sub-assembly for fully automated SMT processing

more information: https://www.harting.com/DE/en-gb/company/harting-ag-3d-mid

TOP PCB Companies