The micro-lab uses the Berthelot reaction, which detects ammonia through a color change. Instead of the traditional toxic ...

This code is for an RFID door lock system using an Arduino. It reads the UID of the RFID card and compares it to a predefined ...

This is a port of Arduino to the RP2040 (Raspberry Pi Pico processor) and RP2350 (Raspberry Pi Pico 2 processor). It uses the bare Raspberry Pi Pico SDK and a custom GCC 14.2/Newlib 4.3 toolchain and ...

The Economic Development Council invites youth ages 9-13 to participate in a seven-week online after-school course: Youth ...

Test your knowledge of F1 circuit layouts by correctly identifying each of the 2025 tracks solely based on a diagram of the circuit. While we can all remember the names and countries of the F1 ...

Check out this interesting wideband AC millivoltmeter circuit from 1990. The simple design features 12 ranges, decent accuracy, 200 µV accuracy, and a frequency range from 20 Hz to more than 2 MHz.

We cover some of the newest projects on our workbenches, including a Battery Monitoring System, a project about car sensors and OBD2, measurement of Arduino boot time, and more. Welcome back to ...

Connect a 4k7 kΩ pull-up resistor between the 1-Wire data line and 5V power. Note this applies to the Arduino platform, for ESP32 and 8266 you'll need to adjust the resistor value accordingly. For ...