Colour finder and sorter with ams TCS34725 and HD-1900A You’ll learn how to automatically identify and sort colours reliably via their Euclidean distance. How to read a colour sensor and drive a servo with Arduino...
Thermochromic display You’ll learn how to make a calm technology display. How to use thermochromic film with an N-channel MOSFET driven Arduino-based resistor-heater. While the electronic circuit is usually very straightforward, the “magic” in physical...
Temperature controlled silent fan with TI LM35CZ You’ll learn how to control fans with no hiss or buzz sounds at low speeds. How to control a fan with a temperature sensor and one of Arduino’s...
Automated Nepalese standing bells You’ll learn how to make an electro-mechanical meditation automation system. How to strike Nepalese standing bells with solenoid mallets from Arduino with millis(). Say goodbye to blocking delay(). While the electronic...
Progressive collision alert with FastLED and MaxBotix MB1242 You’ll learn how to make a collision warning and parking alert. How to read an ultrasonic sensor and give audible/visual feedback with Arduino using millis() and FastLED...
LED inclinometer with FastLED and Analog Devices ADXL345 You’ll learn how to make an interactive spirit level or swell meter. How to calibrate, read and de-noise an acceleration sensor; driving an LED strip with Arduino...
Remote control with RFM69HCW packet radio You’ll learn how to easily TX and RX with Arduino. How to pack different data-types in a struct and transmit it over several hundred metres using RadioHead. While the...
WiFi and MQTT with ESP32, Adafruit IO and IFTTT You’ll learn how to easily TX with Arduino. How to push sensor or event data to a responsive dashboard and trigger tweets or other notifications. IFTTT...
CO2 and PM 2.5 monitor with ESP32 and Adafruit IO You’ll learn how to easily TX with Arduino. Monitor CO2 and PM 2.5 levels, display on 7-segment displays, and transmit to Adafruit IO. While the...
Decibel monitor/VU-meter with ESP32, FastLED and Adafruit IO You’ll learn how to easily TX with Arduino. Monitor noisy location dB with peak hold and decay, display on a NeoPixel RGB LED ring with FastLED, and...