In this DIY project we make a 3-Channel Arduino Relay Shield Circuit for relay based applications ... In this 3-Channel Relay Driver Circuit, we have used an optocoupler to trigger the NPN transistor ...

Arduino is a great way for today’s novices to start to learn how to write and run codes that interact with the external world. Somebody on Facebook recently asked about finding an easy-to-use shield ...

while a couple of transistor ICs controlled by 595 shift registers address them on the low side. From there just use any controller you wish, but in this case it’s an Arduino. [Chunky] uses the ...

[Jakub] found himself in need of an electronic load, and instead of a transistor and a pot, decided to make something more automatic: a programmable load built around an Arduino shield. The idea ...

OMC has launched a fibre optic transceiver shield for Arduino Uno, designed to work with PMMA (polymer) optical cables up to 25m long, plus demonstration software ...