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“The Seeeduino XIAO can be a more comfortable device of measuring heart rate. This simple and inexpensive project is based on the Seeeduino XIAO expansion board to report the heart rate. the device used has an I2C two-wire interface and …
“Recently Great Scott built his DIY version of a tachometer which I thought was very cool. But using an ATmega for this job, I found a bit overpowered. So I tried to force all tasks (measurement, calculation, I²C protocol and …
“Visualize sound frequencies spectrum with an OLED 128x32 display, Arduino Nano 33 BLE and an electret microphone amplifier (MAX9814). See how a bar graph respond to music and sound in a little OLED display. Lowest frequencies toward the left end …
“Several years ago I built a CNC router with the express purpose of creating my own guitar. Unfortunately however, I never got around to it. Two years back I was getting into 3D printing in a big way and started …
“Everyone needs a level at some point whether you are a pro or just hanging a shelf on a wall you want to make sure that it’s going to be straight! Let’s create an accurate Digital Level that …
“Yet another temperature monitoring setup with NTC, SSD1306 OLED and NodeMCU A thermistor is a resistance thermometer or a resistor whose resistance is dependent on temperature. The term is a combination of “thermal” and “resistor”. It is made of metallic …
“I am going to show you how to quickly build a plug & play CO2 sensor where all elements of the project will be connected with DuPont wires. There will only be 5 points that need to soldered, because I did …
“This instructable is for a Capacitor meter based on the ATTiny85 with the following features. Based on ATTiny85 (DigiStamp) SSD1306 0.96” OLED Display Frequency measurement for low value capacitors 1pF - 1uF using 555 oscillator Charge time measurement for high …
“I recently developed a prototype of my own Arduino based phone. Time to improve it. In the previous video, I built a phone on a breadboard that I called CoolPhone. I had no major problems with the prototype, I just …
“In this IoT project, I have shown how to make IoT based Home Automation using Arduino and WiFi module ESP01 to control relays from the manual switch, smartphone, IR remote. This smart relay also can sense the room temperature and …