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“A small hand-held tachometer that uses a laser to show how fast an object is rotating in revolutions per minute (rpm). This Laser Tachometer is a rebuild of Elite Worm’s Build a Laser Tachometer. Both the hardware and software …
“This is an easy-to-build open-source Arduino compatible board that enables driving 8 RC servos over NRF24L01 RF Link. The project can be used as a standalone RC servo driver or 8 channel RF remote-controlled RC servo Receiver. An optional OLED …
“Measure and display air quality with the Raspberry Pi. This project is ideal if you already have a Raspberry Pi running 24/7, e.g., as web server, printer server, pi-hole etc. Then you can easily add extra functionality like …
“Finally I’ve made a working battery based portable soldering iron. This one can melt solder in under 10 seconds, which is amazing. The soldering iron weighs just above 100 grams, is comfortable to use, it can reach more than …
“A $15 game console the size of a business card that plays multiple games via cartridges. The Game-Card is game console with the dimensions of a typical business card (3.5x2”). Unlike most small Arduino game consoles, the Game Card …
“HamMessenger is a portable, battery powered device that runs on a microcontroller and interfaces with an inexpensive ham radio to send and receive text messages and provide position updates using the APRS protocol. Messages and position updates sent via HamMessenger …
“This instructables show how to use MAX30102, XIAO and a tiny display to build a blood oxygen and heart rate meter. This project use Maxim Integrated MAX30102 Biosensor to detect pulse oximeter and heart rate. However, the official sample is …
“Hello friends, this is an Pulse Oximeter which measures Oxygen Saturationon blood aslo measures HeartBeat rate just using your finger. At thisCORONA pandemic pulse Oximeter is very essential to measure heartbeat and oxygen levels.”
“I recently came across this video and decided to modify the project to control a stepper motor and add an OLED display. In this quick, little project, let’s learn how to control a stepper motor’s position from a …
““Glowing Air-Bubble Clock in Water” displays the time and some graphics by illuminated air-bubbles in water. - font: 8 bits width - display area: roughly 200mm height x 90mm width. - The viscosity of water is low and the bubbles rise too fast …