Tag Archive for "heart rate" - Open Electronics

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Arduino-Powered Sleep Monitoring System
While it can be difficult to get enough sleep, at least you can try to make it as restful as possible when you are in bed. That’s the idea behind this project by Julia Currie and Nicholas...
- Posted 6 years ago
- 0

Wireless Power Transfer
The concept of transferring energy without wires has always been...
- Posted 1 week ago
- 0
3296W 10K Multi-Turn Trimmer Set – 50 pcs
Set of 3296W multi-turn trimmers with top adjustment 10K. The...
- Posted 3 months ago
- 0
Efficient and Compact Stereo Power Amplifier: Unleash High-Quality Audio with the PAM8610
Stereo power amplifier 10+10W into 8 ohms based on...
- Posted 4 months ago
- 0
AMPLIFIER CLASS D 2x15W
Based on the PAM8610 chip, this small Class D stereo...
- Posted 5 months ago
- 1
Demoboard for ESP32
Demoboard for the famous ESP32 Bluetooth and WiFi module (available...
- Posted 10 months ago
- 1
TOTEM: learning by experimenting
Let’s learn about an interesting educational platform that allows...
- Posted 1 year ago
- 0
Air Quality Sensor – PM2.5, PM10
This module uses the principle of optical LASER light scattering...
- Posted 1 year ago
- 1
Small solar cell (0,5 V / 800 mA)
Photovoltaic cell with very small dimensions, suitable for carrying out...
- Posted 1 year ago
- 1

PCB CAD, A SELECTION GUIDE
Getting to know and evaluate the software offer for PCB,...
- Posted 2 years ago
- 0
DIY Sensor – Innovation & Implementation
A sensor converts data such as heat, light, sound,...
- Posted 3 years ago
- 0
Getting Started with the ESP32
This article is a getting started guide for the ESP32...
- Posted 4 years ago
- 0

The flame that doesn’t burn
Based on Neopixel and a special ultra-thin Arduino, it simulates...
- Posted 2 years ago
- 1
Here are the Winners from the 3Drag 3d printing contest
Here we are, eventually the contest has come to an...
- Posted 9 years ago
- 0
Updates from the 3Drag 3dprinting contest: Roland Hoffert’s Hacks
Roland Hoffert, from www.eytec.de, submitted us this 3Drag (Velleman K8200...
- Posted 9 years ago
- 0
Updates from the 3Drag 3dprinting contest: Karl Seiss’s Hack
Karl Seiss from Austria made a very clever hack to...
- Posted 9 years ago
- 0

PCB Recycling: The Core of Your Electronics Is More Valuable Than You Think
The screen you are looking at this very moment will...
- Posted 2 years ago
- 4
PCB CAD, A SELECTION GUIDE
Getting to know and evaluate the software offer for PCB,...
- Posted 2 years ago
- 0
The Open Source community united against Covid-19
On March 11, WHO (World Health Organization) officially declared the...
- Posted 4 years ago
- 0
Coronavirus: Now Is The Time For Solidarity
The moment we are living, in China before and all...
- Posted 4 years ago
- 0

Arduino ISP (In System Programming) and stand-alone circuits
We use an Arduino to program other ATmega without...
- Posted 12 years ago
- 226
Arduino GSM shield
This is a very low...
- Posted 13 years ago
- 218
Localizer with SIM908 module
The device is based on a GSM/GPRS module with...
- Posted 11 years ago
- 187
GSM GPS shield for Arduino
Shield for Arduino designed and based on the module...
- Posted 11 years ago
- 181
Small Breakout for SIM900 GSM Module
Some post ago we presented a PCB to mount...
- Posted 12 years ago
- 115

Creating a Telegram Bot for ESP32
In some of the ESP32 projects featured in the...
- Posted 15 hours ago
- 0
Mini Course on Blynk
Among the simplest platforms for connecting IoT devices is...
- Posted 2 days ago
- 0
Creating a Unique Electronic Musical Instrument: The Sound Wall
We place metal foil notes on a panel...
- Posted 4 days ago
- 1
Building a Laser Microscope
If your Blu-ray player has gone from being the...
- Posted 4 days ago
- 0
Grand Piano Keys with Arduino
Arcade games have captivated entire generations. Tasty Cakes is...
- Posted 7 days ago
- 0