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PICO-RS485
Frederiksen Sep 04,2025
The main feautures for this board are:- Raspberry Pi Pico (W) or any other variant- RS485 / MOD-bus interface- SHT31-DIS high precision temperature and humidity sensor- QWIIC connector- Power relay (230V - 16A)   - Wide range input voltage +8V to 24V DC- Reset Button - User Button- User RGB LED- 2x5 pin SPI bus expansion header  For the mechanical side of things we have:- 4 x 3.2mm mounting holes- Size 80x80mm- 4 layer board design
DIY IOT PICO
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Ankle Band
Sajid Sep 04,2025
I created this because I noticed a huge gap in how we monitor movement in both medical rehab and gymnastics. Therapists were relying on visual observation and patient self-reports, which aren't reliable, while gymnasts had no way to get objective feedback on their jumps during training. My solution utilizes a BMI270 IMU and pressure sensors in a coin cell-powered ankle band that can operate continuously for 1.7 years, capturing precise jump metrics and movement patterns. The BMI270 tracks accele...
8th Design Contest-AIoT Project IOT Sensor
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Zen Pilot - Intelligent Control System
Zen Sep 01,2025
Zen Pilot is designed so that all signals are read directly by the onboard microcontroller. This architecture eliminates the need for external readers, ensuring faster response times and more reliable signal management. External sensors can be connected through modular inputs, while the MCU processes the signals natively and controls the outputs via relays and opto-isolators.
8th Design Contest-AIoT Project Arduino IOT
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Infrared IoT hub for home automation - ESP32 version
Mansfield-Devine Aug 26,2025
I created this as a way of experimenting with using IR signals to communicate with Internet of Things (IoT) devices. It's essentially a dev board that can both receive and send IR signals. So, for example, you can control the board itself using standard IR remote control units. Or you can have the board control devices such as TVs, radios and more, all controlled programmatically if you wish. Because the board has integrated wifi via the plug-in ESP dev board, it can also communicate over the ne...
ESP32 ESP8266 Home Automation
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Mini Universal Card v1.5
Isaksson Aug 26,2025
That sounds like a very interesting and versatile development board! The Mini Universal board with Arduino Nano as the brain appears to be designed for industrial and IoT applications with all these features.Let me summarize what I understand the board includes:Communication:LoRa HC-12 module for long-range wireless communicationBluetooth for short-range communication433MHz wireless transmitterInputs and Outputs:Relay outputs for 12V industrial control12V industrial inputsDigital inputs and outp...
Arduino LED IoT
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Air Quality Monitor
Neyra Aug 24,2025
The Air Quality Monitor is a compact, ESP32-C3–based device designed to track and display key indoor environmental metrics in real time. At its core, it integrates the Sensirion SEN54 for particulate matter (PM1.0, PM2.5, PM4.0, PM10) and VOC index, alongside the SCD40 for precise CO₂, temperature, and humidity readings. A crisp 3.71" e-paper screen provides always-on, low-power visualization of air quality trends, making the data both easy to interpret and unobtrusive in any room.Beyond the har...
ESP32 Sensor I2C
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BrewOsmosis
homebrewers Aug 20,2025
For the BrewOsmosis system PCB, you'll need, in addition to the board, 10k resistors (between 3 and 7 depending on your configuration), three-pin 2EDG3.81 STRAIGHT connectors (between 7 and 9 depending on your configuration), 40 2mm pitch pins, and an additional ADS1115 module for the future.https://diyhomebrewers.com/2025/09/brewosmosis-domotizacion-de-un-sistema-de-osmosis.html
8th Design Contest-AIoT Project
731
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InterGasGW (Gateway)
Bontenbal Aug 15,2025
InterGasGatewayArduino (esp8266) Hardware/Software to monitor a Intergas boiler over rs232 interface (x5) of the intergas boiler to Domotica Software with the use of MQTT.What to expectThis project consists of:Hardware -> Cable diagram of between the IntergasGateway and the boilerHardware -> IntergasGateway Schemetic based on KiKadHardware -> IntergasGateway PCB based on KiKadSoftware -> IntergasGateway sketch to be placed on arduino eps8266HardwareA few requirements, set by myself, ...
ESP8266 Arduino DIY
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TubeLight - part #3
Frederiksen Aug 13,2025
this is one of the discs that makes up the rail for the TubeLight
ESP32 IOT WiFi
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TubeLight - part #1
Frederiksen Aug 13,2025
TubeLight:This is a project that is made up of 3 different PCBs in total. There is the base and the 2 other PCBs that makes up the rail where the LED-strip is fixed. I have a prototypes with 1M and 2M long rails.
ESP32 IOT WiFi
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DIY Active FFB Pedal PCBA
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