AWS IoT ExprssLink SARA-R5 Starter Kit For Under $190.00

SparkFun Electronics has launched its development Kit, the AWS IoT ExpressLink SARA-R5 Starter Kit – a product of its collaboration with u-Blox and AWS, to make development using AWS IoT core via a cellular LTE-M network easier.

The AWS IoT ExpressLink offers connectivity software across hardware modules offered by AWS Partners like u-Blox, Infineon, and Espressif. It aims to provide easy connectivity to the cloud with integration into more than 200 AWS IoT services like AWS IoT core. The AWS IoT ExpressLink being a secured out-of-the-box and over-the-air (OTA) connectivity platform for all types of devices, makes it easy to transform existing devices into smart IoT projects.

As the name implies, the development Kit designed for development with the u-blox SARA-R510-AWS module is built on AWS IoT ExpressLink to offer access to AWS IoT core. The Starter Kit comes with a pre-activated u-Blox Thingstream eUICC SIM card which supports cellular communication over a multi-regional network via an LTE antenna also included. It also features a MicroMod Asset Tracker Carrier Board that carries a SARA-R5 module, an ESP32 processor board for running demo applications, and a MicroMod Update Tool for guidance on the use of the MicroMod Asset Tracker Board. The Starter Kit takes power via a USB-C, a breakout pin, or a LiPo battery.

The SparkFun MicroMod Asset Tracker Carrier Board is designed to carry a MicroMod Processor board and allow different microprocessors to be used with it. The Carrier Board comes with an integrated ICM-20948 Inertial Measurement Unit (IMU) and a digital microphone. The IMU which detects the device’s orientation and movement allows a message to be generated and sent whenever the device – asset, is moved from its specific position. The digital microphone being inbuilt allows the device to detect noise that can be dangerous to the system and send an alert, ensuring the safety of the device. The Asset Tracker Carrier Board is also equipped with an onboard micro-SD card socket, and a SIM card slot with a 250 MB global data size SIM card already installed.

Features and Specifications of the AWS IoT ExpressLink SARA-R5 Starter Kit:

Transceiver: u-Blox SARA-R510-AWS module for secure multi-regional AWS IoT Core access

  • 1x MicroMod Update Tool included for communicating directly with the u-Blox SARA-R510AWS module.

Controls:

  • ICM-20948 Inertial Measurement Unit for 9-Degree Of Freedom orientation and movement detection
  • “Wake On Motion” is supported
  • IMU is located in the center of the board for easy frame-of-reference
  • 1x SPH0641 – Digital microphone

Storage:

  • micro-SD socket (for data storage)

Power/Supply:

  • Support rechargeable LiPo batteries
  • LiPo battery charger (MCP73831) with battery fuel gauge (MAX17048)
  • 1x RTC backup battery

Network/wireless:

  • SMA connection for LTE
  • SMA connection GNSS antennas
  • 3.3V power for an active GNSS antenna (switchblade)

Connectors:

  • USB-C connectivity
  • Nano SIM socket
  • Qwiic (I2C) connector

3.3V breakout pins for:

  • 1x SPI bus
  • GNSS timing pulse (1PPS)
  • D0, D1, A0, A1 PWM0, PWM1
  • 1x SARA I2C
  • 1x Network indicator
  • SARA-R5 ON
  • 1x I2C bus

LED indicators:

  • 1x Power (VIN and 3.3V)
  • 1x Network indicator
  • 1x SARA-R5 ON
  • GNSS timing pulse (1PPS)

Video

The SARA-R5 module-based Starter Kit only accepts customized AT Commands, the AWS IoT ExpressLink AT Commands, and will not work with the standard u-Blox SARA-R5 AT Command set. However, SparkFun has provided information on a Hookup Guide for assistance with how to link the MicroMod Update Tool to the SARA-R5 based Asset Tracker Carrier Board. The Company also provides AWS IoT ExpressLink Examples to run on the MicroMod processor on its GitHub repository. 

However, SparkFun advises Customers to confirm that their service provider offers LTE-M coverage before purchasing the starter Kit. More information is available on the product’s page where the product is also available for order at $185.00 on the same page. Information on AWS IoT ExpressLink is available on AWS website.

Meet the Latest Sparkfuns MicroMod Function and Carrier Boards

SparkFun recently added a host of new MicroMod boards and Carriers to its fast-growing MicroMod family. The new boards include a MicroMod ESP32 Function Board, a MicroMod DA16200 Function Board, a MicroMod LoRa Function Board, a MicroMod Environmental Function Board, and a Single/Double MicroMod Main Board.

The SparkFun MicroMod DA16200 Function Board debuts additional onboard IEE802.11b/g/n WiFi module featuring a 40MHz crystal oscillator, RF filter, 4MB Flash, 32.768KHz RTC, a Chip antenna, and JTAG connectors for programming and debugging for upgrading any MicroMod solution. With a low current draw of 0.2uA – 3.5uA in sleep mode, the SparkFun MicroMod DA16200 Function Board is suitable for the development of automation projects requiring door locks, sensors, thermostats, and IoT solutions.

MicroMod WiFi Function Board

The second board, the SparkFun MicroMod WiFi Function Board – ESP32 is designed to serve as a coprocessor board, utilizing ESPRESSIF’s ESP32 WROOM (ESP32-DOWD-V3 Chip) to add WiFi and Bluetooth wireless features to original MicroMod processor boards without such features. The onboard ESP32 WROOM is equipped with 16MB Flash, 520KB SRAM, a dual-mode Bluetooth, an IEE802.11b/g/n WiFi transceiver, and an M.2 MicroMod interface to aid connection without inter-board soldering. The board also features a UART port that can be used to control the ESP32 WROOM module via AT commands, USB-C connector, and CP2102 USB-to-Serial converter.

MicroMod LoRa Function Board

The next Board, SparkFun MicroMod LoRa Function Board, is expected to be used alongside a MicroMod processor board on a Main Board (Host) that offers LoRA and LoRaWAN network capabilities for any MicroMod development. The Main Board is designed to host the duo attachments and provide an electrical connection between them. The LoRa Function Board features Ebyte’s LoRa 915M30S module, a 30dBm transceiver utilizing Semtech SX1276 Communication protocol. It has an edge mount RP-SMA connector suitable for 915MHz LoRa antennas, and a U.FL interface.

MicroMod Environmental Function Board

The last function board, the SparkFun MicroMod Environmental Function Board provides sensing capabilities to MicroMod processor boards with an SGP40 sensor for air quality sensing, an SHTC3 sensor for temperature and humidity sensing, and an STC31 sensor for sensing CO2 concentrations in your room. This Board features an I²C port, an AP2112 3.3V voltage regulator, and jumpers for selectively addressing the STC31.

MicroMod Main Board

Talking about the Main Boards, the MicroMod Main Boards are special Carrier boards designed to carry a MicroMod processor board and a single or double MicroMod Function board, providing the electrical connection between them. Both boards feature a 2A fuse, 3.3V/1A voltage regulator, and a USB-C interface for power and programming of the processor board. While the Single Main Board allows interfacing a MicroMod processor board with one Function board, the Double Main Board allows interfacing with two Function boards.

MicroMod Main Board

There are tutorial links for all the new boards on each Board sales page. You will see links to each product’s page below.

The new MicroMod boards are available for purchase on SparkFun shop at $14.95 for the WiFi Function Board – ESP32; $29.95 for the WiFi Function Board – DA16200; $39.95 for the LoRa Function Board; $149.95 for the Environmental Function Board; $14.95 for the Single Main Board; and $17.95 for the Double Main Board.

iWave Systems launches i.MX 8M Plus OSM Module: A Solderable System-On-Module

Building on the new industry standard “Open Standard Module (OSM)” defined by SGeT, iWave Systems launches iW-RainboW-G40M: The solderable i.MX 8M Plus OSM LGA Module. iW-RainboW-G40M integrates the powerful i.MX 8M Plus processor in the compact OSM 1.0 standard, delivering powerful AI and Machine learning capabilities on a compact edge device.

The OSM Standard defines a standard for a module to be soldered on the carrier board as a solder-on module LGA package, instead of relying on edge or board-to-board connectors. The module is built on a 45 mm x 45 mm “Size-L” Standard, provisioning for 662 contacts. The OSM LGA Size-L Standard, measuring 45mm x 45mm, is 28% smaller than the µQseven (40mm x 70mm), a standard also hosted by SGeT, and 51% smaller than SMARC (82mm x 50mm).

Two image signal processors (ISP’s) and a dedicated neural network processor at up to 2.3 TOPS make the i.MX 8M Plus is an ideal fit in Smart Home, Smart City, Industrial IoT, and beyond with its Machine learning, vision, and advanced multimedia capability.

Key Features of the Module

  • MX 8M Plus Dual/Quad/Quad Lite
  • 2GB LPDDR4 (Up to 8GB)
  • 16GB eMMC (Up to 64GB)
  • Wi-Fi (802.11 b/g/n/ac/ax)
  • Bluetooth 5.0
  • 2 * CAN-FD Ports
  • 2 * RGMII Interfaces
  • PCIe 3.0 x 1
  • LVDS * 2
  • Size-L LGA Module

“i.MX 8M Plus powered OSM provides an ideal mix of small form factor, pricing, and scalability making the module an attractive option for product designers” said Ahmed Shameem M H, Hardware Project Lead at iWave Systems.” The module provides designers a flexible and scalable option for their product, while shortening their up time to market.

With the provision for industrial interfaces such as CAN-FD, time-sensitive networking, and high-speed interfaces, the processor finds a fir in Industry 4.0 and automation systems supporting intelligent and fast processing of multi-media data.

Through a development kit and a production ready SOM, you can accelerate your time to market with reduced risk. The module is application-ready and come with all necessary software drivers and BSPs with software support of Ubuntu, Android and Linux.

Learn More:

e-con Systems launches Full HD GMSL2 color global shutter camera with IP67 enclosure that ensures dust and waterproofing.

IP67 enclosure | Full HD | Color global shutter | GMSL2 | High SNR 

e-con Systems has launched STURDeCAM25, a Full HD GMSL2 color global shutter camera with an IP67 enclosure that ensures protection from dust and water. STURDeCAM25 is the latest introduction in e-con Systems’ STURDeCAM series characterized by products with IP rated rugged enclosures.

STURDeCAM25 is a multi-camera solution based on the AR0234CS sensor from ON Semiconductor®, with the ability to integrate up to 6 cameras. It comes with an onboard Image Signal Processor (ISP) which is tuned to achieve the best quality image output from the sensor. The global shutter efficiency of this camera helps to capture sharp images of moving objects without any shutter artifacts. Its large pixel size of 3.0µm and high Signal to Noise Ratio (SNR) help in producing exceptionally clear and sharp images with less noise even in challenging lighting conditions. The IP67 enclosure of this camera makes it suitable for use in harsh industrial conditions by protecting it from water, dust, temperature variations, as well as shocks and vibrations.

STURDeCAM25 also comes with the GMSL2 interface making it possible to reliably transmit video data using coaxial cables up to a distance of 15 meters with very low latency.  Further, this camera is capable of streaming uncompressed video data at 120 frames per second which helps to reduce motion blur.

Key features of STURDeCAM25

  • IP67 enclosure – Ruggedness to withstand dust and water and has antifogging capability
  • Global shutter – Sharp images of moving objects without shutter artifacts.
  • GMSL2 interface – Transmission of video data up to a distance of 15 meters with low latency.
  • Large Pixel size & High SNR – Sharp images with less noise even in low lighting conditions
  • 720p@120fps & FullHD@65fps – High-quality streaming of uncompressed video data with reduced motion blur
  • Multi-camera synchronization support – suitable for 3D vision and depth mapping functionalities along with 360 degree view.

A combination of color global shutter, IP67 enclosure, GMSL2 interface, multi-synchronization support, and high-performance ISP makes this camera suitable for smart traffic systems, robotic arms, patrol robots, delivery robots, goods-to-person robots, agricultural trucks, and agricultural robots.

This synchronized multi-camera solution comes with the ability to integrate upto six STURDeCAM25 cameras into a single Jetson system. The multi-camera system offers 3D vision, depth mapping and 360 degree view capabilities for proximity & obstacle detection

Designed and developed to work seamlessly with the NVIDIA platform, STURDeCAM25 has off-the-shelf support for the Jetson development kit and Connect Tech’s Rogue platform based on Jetson AGX Xavier, Rudi AGX platform based on Jetson AGX Xavier, and Rudi NX platform based on Jetson Xavier NX. This enables rapid prototyping and faster deployment of vision enabled products.

Video

For more information on the camera module and evaluation kit please check the following links:

Availability

Customers interested in evaluating STURDeCAM25 – Full HD IP67 rated GMSL2 color global shutter camera – can purchase the product from e-con Systems’ online store.

Dual 40W Audio Power Amplifier with Mute

The stereo audio amplifier project shown here is capable of delivering typically 40W per channel continuous average output power into an load with less than 0.1% (THD+N). The project is built using an LM4766 chip from Texas Instruments, The performance of the LM4766, utilizing its Self-Peak Instantaneous Temperature (°Ke) (Spike) Protection Circuitry, places it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). Spike Protection means that these parts are safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks. Each amplifier within the LM4766 has an independent smooth transition fade-in/out mute that minimizes output pops. The IC’s extremely low noise floor at 2µV and its extremely low THD+N value of 0.06% at the rated power make the LM4766 optimum for high-end stereo TVs or mini-component systems.

Notes

  • Inductor L1 and L2: L1 and L2 Inductors: wind 20 turns around resistors R13 and R14 with 1 mm Enameled Copper Wire.
  • Heatsink: It is advisable to use a large-size heatsink with a fan for IC, refer to the datasheet of LM4066 for heatsink calculation.
  • Volume Control – Potentiometer: Use Shielded wire for a 10K potentiometer to avoid unusual noise.

Connections

  • Screw Terminal Connector LS1: Speaker Connection Left Channel
  • Screw Terminal Connector LS2: Speaker Connection Right Channel
  • Screw Terminal CN6: Power Supply Input Maximum Dual 32V DC (+/-32V DC)
  • Screw Terminal CN2: Audio Signal Input Left
  • Screw Terminal CN4: Audio Signal Input Right Channel
  • 3 Pin Header Connector CN1: 10K Ohms Trimmer Potentiometer – Volume Control Left Channel
  • 3 Pin Header Connector CN5: 10K Ohms Trimmer Potentiometer – Volume Control Right Channel
  • Switch 2 Slide Switch: Mute Function
  • LED1 and LED 2: Power LEDs

Features

  • Power Supply +/-30V DC for 40W Output, Power Supply Range Dual 10V to 32V DC (+/-10V to +/-32V) @ 4Amps
  • Load 8 Ohms Speaker
  • Quiet Fade-In/Out Mute Switch
  • THD+N at 1kHz at 2 x 40W Continuous Average Output Power Into 8Ω 0.1% (Max)
  • Frequency Response 20 to 20Khz
  • Input Level Signal 1V Peak to Peak
  • Input Impedance 47K Ohms
  • Gain 21
  • PCB Dimensions 93.35 x 81.92 mm

Mute Function

Slide Switch 2 is provided to apply mute operations. The muting function of the LM4766 allows the user to mute the music going into the amplifier by drawing more than 0.5mA out of each mute pin on the device.

UNDER-VOLTAGE PROTECTION

Upon system power-up, the under-voltage protection circuitry allows the power supplies and their corresponding capacitors to come up close to their full values before turning on the LM4766 such that no DC output spikes occur. Upon turn-off, the output of the LM4766 is brought to the ground before the power supplies such that no transients occur at power-down.

OVER-VOLTAGE PROTECTION

The LM4766 contains over-voltage protection circuitry that limits the output current to approximately 4.0APK while also providing voltage clamping, though not through internal clamping diodes. The clamping effect is quite the same, however, the output transistors are designed to work alternately by sinking large current spikes.

THERMAL PROTECTION

The LM4766 has a sophisticated thermal protection scheme to prevent long-term thermal stress of the device. When the temperature on the die reaches 165°C, the LM4766 shuts down. It starts operating again when the die temperature drops to about 155°C, but if the temperature again begins to rise, the shutdown will occur again at 165°C. Therefore, the device is allowed to heat up to a relatively high temperature if the fault condition is temporary, but a sustained fault will cause the device to cycle in a Schmitt Trigger fashion between the thermal shutdown temperature limits of 165°C and 155°C. This greatly reduces the stress imposed on the IC by thermal cycling, which in turn improves its reliability under sustained fault conditions. Since the die temperature is directly dependent upon the heat sink used, the heat sink should be chosen such that thermal shutdown will not be reached during normal operation. Using the best heat sink possible within the cost and space constraints of the system will improve the long-term reliability of any power semiconductor device.

Schematic

Parts List

NOQNTY.REF.DESC.MANUFACTURERSUPPLIERPART NO
12CN1,CN53 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5316-ND
21CN22 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
32SW1,CN3DNPDO NOT INSTALL
41CN42 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
51CN63 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1248-ND
62C1,C910uF/50V ELECTROLYTICNICHICONDIGIKEY493-11003-1-ND
72C2,C102200uF/35V ELECTROLYTICRUBYCONDIGIKEY1189-2253-ND
84C3,C6,C7,C110.1uF/63V VISHAYDIGIKEYBFC237016104-ND
92C4,C1222uF/50V ELECTROLYTICRUBYCONDIGIKEY1189-3766-1-ND
102C5,C81uF/63V VISHAYDIGIKEYBC5096CT-ND
111C1347uF/50V ELECTROLYTICRUBYCONDIGIKEY1189-3770-1-ND
121D1RED LED 5MMEVERLIGHTDIGIKEYEALP05RDHRA2-ND
131D2GREEN LED 5MMWURTHDIGIKEY732-5017-ND
141LS12 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
151LS22 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
162L1,L21MM ENAMELED COPPERBELDENDIGIKEYBEL1977-ND
172R1,R1020K 1% 1/4W THTYAGEO/STAKEPOLEDIGIKEY
184R2,R3,R7,R91K 5% 1/4W THTYAGEO/STAKEPOLEDIGIKEY
192R4,R64.7E, 5% 1/2W THTVISHAYDIGIKEY56-SFR25H0004708JA500CT-ND
202R5,R847K 5% 1/4W THTYAGEO/STAKEPOLEDIGIKEY
212R11,R122.2K 5% 1/4W THTYAGEO/STAKEPOLEDIGIKEY
222R13,R1410E/5W WIREWOUND THTVISHAY DALEDIGIKEYRSC-10RTR-ND
231R1511K 1% SMD SIZE 1206YAGEODIGIKEY
241SW2SWITCH-MUTE SLIDE SWITCHE-SWITCHDIGIKEYEG1917-ND
251U1LM4766TIMOUSER926-LM4766T/NOPB
262POT10K POTENTIOMETERTT ELECTRONICSDIGIKEY987-1718-ND
272WIRE2 CORE SHIELDED WIRE FOR POTBELDENDIGIKEYBEL1308-50-ND

Connections

Gerber View

Photos

Video

LM4766 Datasheet

Under Speed Warning Alarm for Magnetic Pickup sensor – Frequency Controlled Switch

This is an under-speed sensor module that provides an audible warning and signals output when the speed of a machine is below the set point. The module can be used in applications such as Engines, Machines, Sports machines, Fitness Equipment, Speed of the machine or engine can be detected using a magnetic pickup sensor. The project can be used in many applications where an under-speed monitor is important. The project is based on the LM2907 chip which works as a frequency to voltage converter, interfacing magnetic pickup as shown in the figure below. A typical magnetic pickup for automotive applications will provide a thousand pulses per mile so that at 60 mph the incoming frequency will be ~16.6 Hz. If the reference level on the comparator is set by two equal resistors R2 and R6 then the desired value of C5 and R4 can be determined from the simple relationship:

The buzzer is activated when Frequency ≥ (1/(2XR4C5))

From the RC selection chart, we can choose the suitable values for R5 and C5. In the current circuit, the frequency is set to 500Hz approx. A frequency trigger point can be changed as per user requirement using the above equation. The module supports any sensor with voltage levels 20mV to 28V.

RC selection chart

Magnetic Pickup

A magnetic pickup consists of a permanent magnet, a pole-piece, and a sensing coil all encapsulated in a cylindrical case. A magnetic pickup is most frequently used to sense passing teeth on a gear, sprocket, or timing belt wheel, to bolt-heads, key-ways, or other moving machine-mounted targets.

If you are looking for “Over Speed Sensor – Over Speed Alarm using Magnetic Pickup Sensor” check the link attached.

Features

  • Supply 12 to 15V DC @ 20mA
  • Optimized for Magnetic Pickup Sensor
  • Other Optical Sensors, Mechanical sensors, Tachometer sensors can be used
  • Inputs Voltage Level 20mV to 28V
  • Buzzer Operates when the Input frequency is below 500Hz
  • Provide Low Output When Speed is below Setpoint
  • Header Connector for Supply Input and Output
  • 2 Pin Header for Sensor
  • D1 Power LED
  • PCB Dimensions 38.42 x 16.19 mm

Applications

  • Engines
  • Tachometer Under/Over Speed
  • Fitness Equipment
  • Sports Machines
  • Machine Automation
  • AC/DC Motor Speed Monitor

Schematic

Parts List

NOQNTYREF.DESCMANUFACTURERSUPPLIERPART NO
11BZ1BUZZER 5V SMD SIZE 12MMCUI DEVICESDIGIKEY102-CMI-1295-1285T-ND
21CN16 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5319-ND
31CN22 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
41C31uF/25V SMD SIZE 1206MURATA/YAGEODIGIKEY
51C20.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
61C4DNP
71C50.01uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
81D1LED SMD SIZE 0805LITE ON INCDIGIKEY160-1427-1-ND
91Q1BC847ALMICRO COMMERCIALDIGIKEYBC847B-TPCT-ND
102R1,R71K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
113R2,R5,R65K1 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
121R3100E 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
131R4100K 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
141U1LM2907-NTIDIGIKEYLM2907M-8/NOPB-ND
151C110uF/25V SMD SIZE 1206MURATA/YAGEODIGIKEY

Connections

Magnetic Pickup Sensor

Gerber View

Photos

Video


LM2907 Datasheet

DC Motor Controller using Relay and MOSFET – Arduino Interface

The project presented here is a low-cost solution to control high power brushed DC motor speed and direction. Traditional DC motor controllers are based on solid-state circuitry known as H-Bridge. Here we have made an H-bridge configuration using high current 2 x relays which can handle high voltage as well as high current. Additional MOSFETs are used to control the speed of motor. These MOSFETs can be removed in case of only direction control required, short the Drain and source pin of MOSFETs. The project requires 3 control input signals, all inputs are optically isolated to prevent noise and high voltage going in to logic circuitry. A large-size heatsink is a must on MOSFET.

The project requires 3 input signals, 2 x TTL 3V to 5V for direction control and one PWM 0 to 100% Duty Cycle for speed control. Operating supply is 12V DC for logic circuit and relay, Motor supply 12V to 90V DC, Load up to 20A.

Arduino Code

Example Arduino code is provided to test the board. Arduino Uno or Nano is the right choice, refer to the details below for the interface.

  • Arduino Pin D4 = CN4 Pin 1 – A1 (DIR 1)
  • Arduino Pin D3 = CN4 Pin 3 – A2 (DIR 2)
  • Arduino Pin D5= CN4 Pin 5 – A3 (PWM)
  • Arduino GND = CN4 Pin 2,4,6 (C1, C2, C3 cathode of Optocouplers)
  • Arduino A0 = Joystick or Potentiometer

Input Control Signals (Connect all 3 x Cathode C1, C2, C3 to GND of Arduino) Connector CN4  

  • DC Motor Forward >> A1 High(3-5V), A2 Low (GND) or Floating, A3 PWM Signal, Duty Cycle 0 to 100%
  • DC Motor Reverse >> A1 Low (GND) or Floating, A2 High (3-5V), A3 PWM Signal, Duty Cycle 0 to 100%

Features

  • Power Supply for Relay and MOSFET 12V DC @ 100mA
  • Power Supply Motor 12V to 90V DC
  • Motor Load 20A (Maximum 30A)
  • All Inputs are Optically isolated
  • 2 x Inputs for Direction Control and Brake
  • One PWM Signal to Control the speed of Motor 0 to 100 % Duty Cycle
  • PWM Frequency 300Hz to 20 Khz
  • 2 x LEDs for direction indication
  • PCB dimensions: 75.41 x 74.30 mm

Schematic

Parts List

NOQNTYREFDESCMANUFACTURERSUPPLIERPART NO
11CN12 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
21CN22 PIN BARRIER CONNECTOR PITCH 9.53MMTE CONNECTIVITYDIGIKEY1437664-6-ND
31CN32 PIN BARRIER CONNECTOR PITCH 9.53MMTE CONNECTIVITYDIGIKEY1437664-6-ND
41CN46 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5319-ND
51C1220uF/25VRUBYCONDIGIKEY1189-3720-3-ND
61C20.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
72C3,C4100uF/100VNICHICONDIGIKEY493-13184-3-ND
81C50.1uF/100VKYOCERADIGIKEY478-6107-1-ND
92D1,D3SM4007SMC DIODE DIGIKEY1655-1N4007FLCT-ND
101D2RED LEDLITE ON INCDIGIKEY160-1427-1-ND
111D4RED LEDLITE ON INCDIGIKEY160-1427-1-ND
122Q1,Q2BC517ONSEMIDIGIKEYBC517OS-ND
131Q3FDH3632ONSEMIDIGIKEYFDH3632FS-ND
142RE1,RE212V RELAYGOODSKY/PANASONICDIGIKEYJTV1G-TMP-12V
152R1,R51K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
162R2,R6470E 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
174R3,R4,R7,R82K2 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
182R9,R11220E SMD SIZE 0805MURATA/YAGEODIGIKEY
191R1010E 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
202U1,U2PC817TAIWAN SEMIDIGIKEYTPC817BC9G-ND
211U3TLP350/TLP250TOSHIBAMOUSER757-TLP350HF

Connections

Gerber View

Photos

Video

TLP350 Datasheet

Renesas Power Supply with Supercapacitor

Renesas’ power supply with supercapacitor can be used to replace the traditional battery as a backup power supply

Renesas’ ISL85403 buck-boost regulator is a power supply system with a supercapacitor and a wide input voltage range that supports from 3 V to 40 V with a 2.5 A output. A supercapacitor can be used to replace the traditional battery (with defects such as electrolyte leakage) as a backup power supply.

In boost mode, this regulator can discharge the capacitor energy as much as the present electronic components, which maximizes the use of capacitive energy and helps save cost. When the load is small, the discharge efficiency can be as high as 82% at 100 mA. At high current (1 A output), this design can still achieve over 50% discharge efficiency. The high-performance LDO, high-efficiency MOSFET, and precise voltage supervisor provide the integrated power system solution.

Features

  • The ISL85403 can fully extract the power of a supercapacitor (can be as low as 0.3 V)
  • The ISL88002 voltage supervisor monitors the power status
  • The ISL9001A is a high-performance LDO with low ISUPPLY and high PSRR
  • The RJK03M5DNS N-MOSFET supports high-efficiency drive and low heat design

more information: https://www.renesas.com/us/en/products/power-power-management/dc-dc-converters/step-down-buck/buck-regulators-integrated-fets/isl85403-25a-regulator-integrated-high-side-mosfet-synchronous-buck-or-boost-buck-converter

Analog Devices introduced ultrastable precision shunt reference

Analog Devices introduced the ADR1399, a precision shunt reference that features excellent temperature stability over a wide range of voltage, temperature, and quiescent current conditions. A temperature stabilizing loop is incorporated with the active Zener on a monolithic substrate, which nearly eliminates changes in voltage with temperature. The subsurface Zener circuit is fully specified at a quiescent current IREF of 3 mA and offers minimal noise (1.44 μV p-p, 0.1 Hz to 10 Hz) and excellent long-term stability (7 ppm/√kHr). The ADR1399 offers much lower output dynamic impedance (0.08 Ω) than the LM399, reducing the effects of shunt resistor (RSHUNT) and the supply voltage variation on the reference output.

Features

  • 7.05 V ultrastable shunt reference
  • Low-temperature coefficient: 0.2 ppm/°C
  • Maximum dynamic impedance: 0.08 Ω
  • Typical reference noise for 10 Hz < f < 1 kHz: 1.84 μV rms
  • Initial accuracy range: –300 mV to +250 mV
  • Available in 4-lead TO-46 metal can
  • External thermal insulator provided
  • Upgrade path for legacy LM399

Ideal applications for the ADR1399 include ultrastable digital voltmeters, precision calibration equipment, and ultra repeatable analog-to-digital converters (ADCs).

Pricing and Availability

Evaluation Board ADR1399H-EBZ for the ADR1399 Ultra Stable Shunt Voltage Reference.

The ADR1399 is already supplied to customers in 4-lead TO-46 metal can/ The unit price in 1,000 pieces quantities is $10.27. The EVAL-ADR1399 evaluation kit is also available.

Crocus Technology CT110 XtremeSense® Sensors

Crocus Technology CT110 XtremeSense® Sensors are high linearity and high-resolution contact current sensor with isolation. The CT110 Sensors are designed with patented state-of-the-art XtremeSense TMR technology resulting in high performance. The CT110 measures the current flowing through the DFN package via its integrated Current-Carrying Conductor (CCC) and converts it to an analog ratio-metric output voltage representing the current. Additionally, the CT110 delivers superior performance with a typical total output error of less than ±0.5% and a capability of sensing current as low as 5mA providing unmatched resolution.

The Crocus Technology CT110 XtremeSense Sensors simplify design, PCB layout and save PCB area. The device can support up to +15.0A of AC and DC, making it ideal for replacing shunt resistors plus isolation amplifiers.

The CT110 features a sampling frequency of 200kHz but only has a minimal current consumption of 1.2mA to bias it since the measured current does not go through the device. Furthermore, the CT110 integrates a FLAG output that is active LOW and will indicate when an over-current event occurs.

Features

  • <±0.5% (Typical) Total output error
  • 5mA Resolution
  • 200kHz Sampling frequency
  • 1.2mA Supply current
  • FLAG Pin to indicate 90% and 10% of full current range
  • 2.7V to 5.5V Supply voltage
  • 2kV Isolation
  • AC or DC Current range:
    • +5.0 ADC / ±5.0 APK
    • +10.0 ADC / ±10.0 APK
    • +15.0 ADC / ±15.0 APK
  • 6-Lead DFN, 3.00mm x 3.00mm x 0.95mm package

more information: https://crocus-technology.com/products/ct110/

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