Zener diode noise is processed, captured and recorded on an SD card. Passes all NIST tests for random signals.

Build your own eBUS converter for a few bucks. Only 13 components are necessary.

This circuit has the following features: it works with the main frequencies of 50 or 60 Herz, it works with the main voltages of 117 or 220 VAC, it is connected in series...

A nice way to protect your and your guests' privacy with a red led that flashes when the door is closed!

An Arduino-compatible shield for evaluation of the Bosch Sensortec BME280 combined temperature, humidity and pressure sensor.

Always on, solar powered, stand-alone 24/7 Wi-Fi repeater.

An open source (software and hardware) power supply that bridges the gap between DIY/hobbyists/education

Want to build a DDS high performance function generator with the popular AD9834, BUT using a micro of your choice? Read on.

CAN Bus can be monitored using Arduinos & PHPs. PHP-Serial can gather data effortlessly from arduinos...

Using CAN Bus on Arduino you can monitor the health of your solar PV cells very easily & efficiently yet at a very low price.

Using low power LoRa 433 MHz radios it's very easy to remote telemetry amidst huge interfering high voltage switch yards & other structures.

A digital counter is useful in Offices, malls, sports venues etc. Here we have designed an industrial counter that can be used with any printer or similar devices for counting paper or similar things. This device can be used for multiple applications of counting, just by changing the sensor input / counter input.

This board combines the force of the Raspberry Pi with the mechanical force of powerful LEGO Mindstorms motors. Four LEGO EV3 servo motors can be connected, with PWM speed control for two of them and direction control for all four. LEGO EV3 motors have built-in optical encoders that generate pulses when a motor rotates.

I present here a six channel temperature data logger. The unit uses the DS18B20 digital temperature sensors. It also has a Real Time Clock (RTC-DS1307). The RTC supplies the time stamp for the logged data. A 4x4 numeric is used for setting the time/date and the logging interval. The keypad is also used to start/stop the logging.

This project describes a Conductivity Shield for Arduino Uno that allows you to accurately measure the conductivity of chemical solutions.

1, 2 or 3 channel power analyzer, giving number or graphic display (scope picture or FFT) on a 128 x 64 LCD

Die Rollladensteuerung arbeitet über I2C mit den angeschlossenen Port-Expandern MCP23017. Ein Port-Expander arbeitet als Input und ein weiterer als Output für die Relaiskarte. Alle externen Programmteile der Peripherie werden in C geschrieben. Anleitungen in Python gibt es ja schon und können im Internet nachgelesen werden.

The Sceptre is a small ARM7 board based on the LPC2148. The board features Bluetooth, battery charger, SD-card slot, accelerometer and USB.

This project is a remake of the 120718 Wi-Fi Controller. With this board you can control an RGB LED strip and eight GPIO pins via an Android app or a webpage on the computer. The microcontroller is an Atmel ATmega328P-AU because it's easy to program using the Arduino IDE. To connect to the network an ESP8266 WiFi is module.

OBD2 for Raspberry Pi with Pi-OBD add-on board or DXM OBD2 module and OBD2 software taken from my other labs project Firmware Update for OBD2-Analyser NG.

Firmware update for OBD2-Analyser NG. OBD2 software for OBD2-Analyser NG with Bluetooth module running on PC and Raspberry Pi with Bluetooth adapter.