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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
315
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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
439
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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
3028
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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
254
3
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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
334
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ESP32 based Lora Ebyte E22-400T22S Reciever with Relays
Khan Aug 09,2025
The receiver module is a critical part of the wireless surveillance camera control system, designed for long-range, reliable operation using the LoRa Ebyte E22-400T22S at 433 MHz. Just like the transmitter, it leverages LoRa’s robust communication capabilities to ensure seamless data reception even in challenging outdoor environments.Upon receiving control commands from the transmitter, the receiver processes the data via an ESP32-S3 microcontroller and executes precise motor movements for the s...
DIY Arduino IOT
263
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ESP32 based Lora Ebyte E22-400T22S transmitter
Khan Aug 09,2025
This project focuses on replacing the traditional wired control system for surveillance camera tilt motion with a reliable long-range wireless solution. The motivation stemmed from challenges in wired setups, including distance limitations, frequent weather-related failures, and costly repairs.To achieve this, I designed a custom wireless remote control system using the LoRa-based Ebyte E22-400T22S module, operating at 433 MHz. This module offers an open-area communication range of up to 5 km, e...
ESP32 Relay IOT
359
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CH340K USB-C Programmer with Auto-Reset (for ESP Chips)
M Aug 05,2025
For many embedded or custom ESP-based projects (like this one), a dedicated USB to TTL chip on the main PCB isn't always necessary—especially if firmware uploads are rare.In these cases, an external USB-to-serial programmer comes in handy.However, uploading firmware to ESP chips isn't always straightforward.As you may know, ESP chips require specific pin states (typically toggling EN and IO0) to enter boot mode. Without automation, you're left using awkward workarounds like holding down buttons,...
ESP32 ESP8266 IOT
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Popular Project
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Air Quality Monitor
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 ...
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