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“A Tesla coil is an electrical resonant transformer circuit designed by inventor Nikola Tesla in 1891. It is used to produce high-voltage, low-current, high frequency alternating-current electricity. The source of the audio signal in this case is the Arduino nano …
“The following instructable explains how to build a simple indoor air quality monitor. Through this monitoring you can better organize the ventilation in your rooms. And thus improve health and prevent mold. The following measured variables are displayed: VOC Index …
“This product alerts the user when they are speaking too loudly via two LEDs. Louder voices spread more viral particles, so quieter is safer. In this pandemic it is important to take reasonable measures to reduce spreading viruses. A paper …
“Using an ATtiny1614 processor with LiPo battery, including USB charging circuitry and logic. It is programmable with Arduino IDE! I would introduce to you this Logic Probe, a complete instrument. It is simple but effective to measure digital logic levels …
“Bored with Pandemic lockdown like the rest of us I started playing around with Arduino and LED strips. I soon ran into the “ping pong ball LED clock” by thomasj152 at https://www.instructables.com/Ping-Pong-Ball-LED-C… and decided …
“Now a few weeks in test and performing so well… ! An Arduino controller to very effectively keep the humidity to an acceptable level. WHY (oh why…?) Well I looked for a good solution to keep the humidity level down in …
“Use an ESP32 Cam and a passive infrared (PIR) sensor to create a motion-activated security camera that posts photos to a Discord channel. Use an ESP32 Cam and a passive infrared (PIR) sensor to create a motion-activated security camera that …
“This is another one of my series of unusual clocks. The time is displayed on the WS2812 LED strip containing 34 LEDs. Hours, decadic-minutes and minutes each have their own color. Device is really simple and contain only a few …
“This ECG (Electrocardiogram) unit has an integrated display. The display can show individual heart beats in a large format, the train of heart beats in a small format and a Poincar plot. It is battery powered and can be worn …
“In this project I will show you why my new autotransformer keeps tripping my circuit breaker and how I built an AC softstarter in order to “softly” start the transformer so that it does not trip my circuit breaker. Along …