Tag Archive for "coin" - Open Electronics

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How to build a Coin-Operated timer with a display interface
This circuit provides timed access to pay services such as games, showers, blows dryers and various types of vending machines, thanks to a coin counter and a display interface. In the applications involving the paid...
- Posted 5 years ago
- 1

Clap sensor switch – in DIY Kit
It is capable of recognizing the sound of clapping hands...
- Posted 2 months ago
- 1
Liquid level indicator for tanks – in DIY kit
This monitoring device is useful for keeping track of the...
- Posted 2 months ago
- 0
LED candle with Breath-Activated ON/OFF – in DIY Kit
This LED candle with breath-activated ON/OFF function draws inspiration from...
- Posted 2 months ago
- 0
Low charge audible warning for 12V batteries – in DIY Kit
This low-charge warning buzzer alerts you when your vehicle’s battery...
- Posted 2 months ago
- 0
Automation for motorized blinds and shutters – in DIY Kit
Complete Kit for Motorized Outdoor Blinds and Shutters Automation. This...
- Posted 2 months ago
- 1
Alcohol tester with LED indication and audible buzzer – in DIY Kit
With its high sensitivity and rapid response times, this kit-based...
- Posted 2 months ago
- 0
LED candle with Breath-Activated ON/OFF – DIY Kit
This LED candle with breath-activated ON/OFF function draws inspiration from...
- Posted 2 months ago
- 0
Low Charge Audible Warning for 12V Batteries – in kit
This low-charge warning buzzer alerts you when your vehicle’s battery...
- Posted 2 months ago
- 0

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 13 years ago
- 115