You may have seen many light-sensitive switch circuits based on an LDR sensor. Usually, the sensitivity of the LDR based light sensor is poor. We wanted a very sensitive light switch hence we decided to make a circuit based on a light sensor rather than LDR. After a little research on the internet, we found the OPT101 light sensor chip which includes a photodiode and a transimpedance amplifier in one package. The OPT101 light sensor provides an analog voltage output linearly proportional to light intensity.
Analog Light Sensor + Light Sensitive Switch using OPT101 – [Link]
Texas Instruments TPS92610-Q1 Automotive Single-Channel LED Driver is a simple and ideal solution to deliver constant current for a single LED string with full LED diagnostics. The device operates from an automotive car battery. The TPS92610-Q1 addresses different requirements using the TPS9261x-Q1, TPS9263x-Q1, and TPS9283x-Q1 devices within the one-fails–all-fail feature. The TPS92610-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
Device HBM ESD Classification Level H2
Device CDM ESD Classification Level C3B
Single-Channel Constant-Current LED Driver With PWM Dimming
Wide Input-Voltage Range: 4.5V-40V
Operating Junction Temperature Range: –40°C to 150°C
Constant Output Current, Adjustable by Sense Resistor
Precision Current Regulation, Tolerance ±4.6% Across Junction Temperature –40°C to 150°C
Maximum Current: 450mA
Heat Sharing With External Resistor
Low Dropout Voltage (Sense–Resistor Voltage Drop Included)
Maximum Dropout: 150mV at 10mA
Maximum Dropout: 400mV at 70mA
Maximum Dropout: 700mV at 150mA
Maximum Dropout: 1.3V at 300mA
Diagnostics and Protection
Single-LED Short-Circuit Detection With Auto-Recovery
LED Open-Circuit and Short-Circuit Detection With Auto-Recovery
Diagnostic-Enable With Adjustable Threshold for Low-Dropout Operation
Fault Bus up to 15 Devices, Configurable As Either One-Fails–All-Fail or Only-Failed-Channel-Off
Low Quiescent Current and Fault-Mode Current (<250µA per Device)
You may have seen many light-sensitive switch circuits based on an LDR sensor. Usually, the sensitivity of the LDR based light sensor is poor. We wanted a very sensitive light switch hence we decided to make a circuit based on a light sensor rather than LDR. After a little research on the internet, we found the OPT101 light sensor chip which includes a photodiode and a transimpedance amplifier in one package. The OPT101 light sensor provides an analog voltage output linearly proportional to light intensity.
This board has a dual function, it can act as a Light Sensor and a Light Sensitive switch. The operating supply of the circuit is 12V DC and draws 45mA current when Relay is ON. When light falls on the OPT101 sensor and the intensity of light reaches above the set point it triggers the relay. A separate header connector is provided to output the sensor analog value. The output of the sensor is almost 0 (Zero) when it’s in a dark area and goes high till 11.25V when it has access to full light. The sensitivity of the switch is adjustable using the onboard trimmer pot. LM358 op-amp acts as a comparator, BC847 transistor helps to drive the relay, diode D1 protects the transistor from back-EMF of inductive load (Relay). D2 is the power LED and D3 LED indicates the relay ON/OFF function. Relay has SPDT switch with NO (normally open)/NC (Normally Closed) contacts. The contact rating of the relay is 10A and the switching voltage 277V AC, 28V DC Max.
Features
Operating Power Supply 12V DC
Current Consumption 45mA (When Relay is in ON)
SPDT Relay
Contact Rating of Relay 10Amps and Switching Voltage 28V DC or 277V AC Max
CN3 Sensor Direct Output (0 to 11.25V + 12V DC Supply + GND)
This is an isolated analog input module that is useful for interfacing Analog signals of various types originated from analog sensors and field devices. The module is very useful for in-process controls, factory automation, industrial applications, etc. Interfacing an analog voltage, an analog sensor to Arduino or other various microcontrollers with optical isolation is very easy with this module. The circuit requires two power supplies for the input and output sides. The module takes 0 to 5V analog input and provides optically isolated 0-3.3V as output. The circuit can also be interfaced with a 10V sensor, for 0 to 10V input, change the resistor R3 to 1.8K and the output will be the same 0 to 3.3V. The operating power supply input side and output side is 5V DC. Hook up the sensor or analog voltage to the input of this module and connect the output to Analog Pin of Arduino or ADC of any micro-controller. The circuit is based on an optically isolated linear optocoupler. The isolation voltage between input and output is 3750V. IC1 LM358 is used as a closed-loop servomechanism to sense the photodiode current and drive the LED of the optocoupler. IC2 is a linear optocoupler and IC3 LM358 is a signal conditioner for the phototransistor. D1 is the power LED for the input side supply.
Optically Isolated Analog Input Module for Arduino – [Link]
This isolated analog input module is useful for interfacing Analog signals of various types originating from analog sensors and field devices. The module is beneficial for in-process controls, factory automation, industrial applications, etc. Interfacing an analog voltage, an analog sensor to Arduino or other various microcontrollers with optical isolation is very easy with this module. The circuit requires two power supplies for the input and output sides. The module takes 0 to 5V analog input and provides optically isolated 0-3.3V as output. The circuit can also be interfaced with a 10V sensor, for 0 to 10V input, change the resistor R3 to 1.8K and the output will be the same 0 to 3.3V. The operating power supply input side and output side is 5V DC. Hook up the sensor or analog voltage to the input of this module and connect the output to the Analog Pin of Arduino or ADC of any microcontroller. The circuit is based on an optically isolated linear optocoupler. The isolation voltage between input and output is 3750V. IC1 LM358 is used as a closed-loop servomechanism to sense the photodiode current and drive the LED of the optocoupler. IC2 is a linear optocoupler and IC3 LM358 is a signal conditioner for the phototransistor. D1 is the power LED for the input side supply.
The LOC110 Single Linear Optocoupler features an infrared LED optically coupled with two photodiodes. One feedback (input) photodiode is used to generate a control signal that provides a servomechanism to the LED drive current, thus compensating for the LED’s nonlinear time and temperature characteristics. The other (output) photodiode provides an output signal that is linear to the servo LED current. The IC features wide bandwidth, high input-to-output isolation, and excellent servo linearity.
Features
Operating power supply for the input side and output side is 5V DC
Current consumption 10mA
Analog Signal Input Range 0 to 5V
For Analog Sensor 0 to 10V, Change R3 to 1.8K Ohms
AMD has announced their new Ryzen Embedded V2000 processors with 7nm fabricated Zen 2 cores. They have designed four new processors for embedded devices. Ryzen Embedded V2000 doubles the multi-threaded performance-per-watt and offers up to 30 percent better single-thread CPU performance compared to the previous-gen V1000. Also, the graphics performance is expected to have a 40 percent boost.
The Ryzen Embedded V2000 offers the low-end Hexa-core V2516 and octa-core V2718 processors with 10-25W TDPs. On the high-end, there is a hexacore V2546 and the octa-core V2748 with 35-54W TDPs. The processors are generally dual-threaded. So the octa-core models have 16 threads and the hexacore ones have 12 threads. The top tier V2748 offering a whopping 2.9GHz base and 4.25GHz boost rates while maintaining a 35-54W TDP.
The 6x AMD Radeon™ Graphics cores are clocked at 1.5GHz for V2546 and V2516 and there are 7x cores of V2718 and V2748 that come with 1.6GHz graphics clock speed. The V2000 SocCs can drive up to 4x independent displays at 4KP60 with the help of up to 4x HDMI 2.1 (HDMI 6G) or 4x DP 1.4. They also support V2000 4K encoding.
On the I/O support for these new SoCs that, there are 20x PCIe Gen3 lanes, HDMI 2.1, DP 1.4, and USB 3.1 Gen2. All of these SoCs support up to Dual Channel 3200MHz DDR4, including ECC RAM. Initial launch partners include Advantech (Mini-ITX and COM Express), ASRock Industrial (mini-PCs), and Sapphire (4×4 and 5×5 boards), and an updated Simply NUC mini-PC. Ibase will also power some of its products with V2000 SoCs. The V2000 series has a 0 to 105°C operating range.
Similar to the AMD Ryzen Embedded V1000 and R1000 Series, the V2000 will support AMD Memory Guard, Secure Boot, and Secure Memory Encryption. The stored memory is encrypted to help prevent data breach attacks, as well as helps to decrease cold boot attacks.
No pricing or availability information is published for the Ryzen Embedded V2000 processors yet. More information is on AMD’s announcement and product page.
The Broadcom® AFBR-S4N33C013 is a single-silicon photo-multiplier (SiPM) used for ultra-sensitive precision measurement of single photons.
The active area is 3.0 mm × 3.0 mm. A high packing density of single chips is achieved using through-silicon-via (TSV) technology and a chip-sized package (CSP). Larger areas can be covered by tiling multiple AFBR-S4N33C013 CSPs almost without any edge losses. The protective layer is made by a glass that is highly transparent down to UV wavelengths, resulting in a broad response in the visible light spectrum with high sensitivity towards blue- and near-UV region of the light spectrum.
The AFBR-S4N33C013 SiPM is best suited for the detection of low-level pulsed light sources, especially for the detection of Cherenkov or scintillation light from the most common organic (plastic) and inorganic scintillator materials (for example, LSO, LYSO, BGO, NaI, CsI, BaF, or LaBr). This product is lead-free and compliant with RoHS.
Features
High PDE of more than 54% at 420 nm
Chip-sized package (CSP)
Excellent SPTR and CRT
Excellent uniformity of breakdown voltage, 180 mV (3 sigma)
Excellent uniformity of gain
Size 3.14 mm × 3.14 mm
With TSV technology (4-side tileable), with high fill factors
Onion Corporation, the company best known for its computing and IoT connectivity devices is currently crowdfunding their LiDAR depth camera system named the Onion Tau. Onion Tau Camera is a 3D depth-sensing camera. It is capable of producing 3D depth data rather than color frames.
The company claims it to be a USB-based and plug-and-play 3D camera. It requires no additional computation to provide depth data. Plugging it into a computer with a USB cable is more than enough for it to start sending depth data to the computer via USB-C. The Tau holds the promise to become an affordable solution for the level beyond single-point depth sensing or one-dimensional scanning.
Onion Tau LiDAR Camera Prototype
The LiDAR-style time-of-flight sensor in the camera outputs real-time 160 x 60 resolution depth data. It can also output a greyscale image of the scene. Most importantly, the range for depth sensing is 0.1 m to 7 m at a frame rate of 30fps. For real-time processing, Onion has promised a web-based application for viewing the point cloud along with a Python library and OpenCV-compatible application programming interface — both of which will be open source.
Specifications
Depth Technology: LiDAR Time of Flight
Depth Stream Output Resolution: 160 x 60
Depth Stream Output Frame Rate: 30 fps
Minimum Depth Distance: 0.1 meters
Maximum Range: 7 meters
Depth Field of View (FOV): 70° x 20°
Connector: USB-C
Tau Camera: 4 mounting holes
Use Cases
Primary use case:
Use the bundled viewer to see the depth data rendered on your computer
Explore 3D depth mapping and it’s possibilities
Secondary use case:
Use the Python API to build custom made applications
Compatible with OpenCV
Use cases this enables:
Environment mapping (like SLAM)
Augmented Reality
Computer vision applications:
Person counting/presence detection
Object detection
Robotics
Automation
The way LiDAR cameras are getting mainstreamed, it is a very high probability that they will soon take over the “smart” devices universe. Currently, on CrowdSupply, Onion’s Tau Camera is looking forward to achieving that goal.
So, today we have a real-world issue that you probably deal with too. A lot of people hate driving at night. It is darker, more monotonous, and difficult to see in a distance. Some people totally avoid it, sometimes even missing events they want to be a part of, just because the night drives make them feel unsafe. Now, we have a great example of how technology can be extremely helpful to the world, with the Lanmodo Vast Pro!
What is the Lanmodo Vast Pro? well, it is a night vision system with a dashcam, designed to make you drive safely at night, and in difficult weather conditions, such as in foggy days, heavy rain and snow. Besides that, it also includes a discrete, waterproof rearview camera, meaning parking just became a whole lot easier if your car is not one of the newest that already includes that. This dual-camera system can record up to 30 hours of footage while you are gone from the car, which in companion with a G-sensor, which is used to detect a sudden collision and save its footage so that you have evidence if the other driver runs away without giving you his contact (and let us be real, that would be a miracle).
If you’re interested in exploring more dashcam options or seeking information on them, www.dashcamdiscount.com offers a comprehensive resource. Whether you’re a seasoned driver looking to upgrade your current setup or a newcomer seeking guidance on the best dashcam for your needs, the platform provides valuable insights and reviews to inform your decision-making process. Visit dash cam discounts to discover a wealth of information and reviews on dashcams, and make an informed choice to enhance your driving safety and peace of mind.
The Lanmodo Vast Pro has some interesting features:
Dual 1080p cameras with full-color image and view distance up to 300 meters
8-inch screen
Up to 30 hours of recording through an 128 GB microSD card slot
Driving and parking modes (with 45º front range and 170º rear range)
Easy installation that fits in any car
When it comes to the less technical side of things, there are some important details they have taken into consideration: the rearview camera is waterproof, so you can install it outside the car, which gives me mixed feelings because it would be easily stolen and the DIY installation would be harder. Aside from it, they give you two alternatives to power the system: with the OBD or a cigarette lighter, making the process easier and the end result more discrete. Lastly, they include a mat and a suction cup made with nano glue technology, making it more sticky, washable, and durable. So that no more wobbliness that we are accustomed to by the GPS happens. Such a nice touch!
Lastly, the Lanmodo Vast Pro is currently crushing the numbers on its Indiegogo campaign, just showing you how valuable this product actually is! The idea may be adapted into cars of the future, but while that can take a long time to happen (and be incredibly expensive), you can get the whole thing for around $258, as an early bird, which is an insane deal.
This pressure switch project is built using a piezoresistive transducer, LM358 OPAMP as comparator, and a relay. The circuit activate the relay when the pressure in a system exceed a given set-point. Basically, this switch can power ON or OFF a pump, valve, motor, when certain pressure is reached. A trimmer potentiometer is provided to set the trigger point. LM358 is used as comparator, relay has Normally Open/Normally closed contacts with current rating 5Amps @ 230V AC or 10Amps @ 28V DC. LM78L05 IC is used to provide 5V DC supply to pressure sensor. The operating voltage of this circuit is 12V and it consumes approx. 40mA current when Relay is in ON condition. We have used MPXV5010DP pressure sensor from NXP. This is an analog pressure sensor and the output of this sensor is 0.2V to 4.7V which is proportional to the applied pressure range of 0-10kPa (0 to 1.75PSI).
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