DO NOT connect in any ways the main power supply that drive the LOAD to the arduino and transistor circuitry! Turn OFF the relay with delay You can use this code example to introduce a delay in your ...

Posted in Arduino Hacks, Microcontrollers Tagged arduino, arduino shield, batteries, battery, charger, charging, lcd, Li-ion, lipoly, lithium, LT1510, shield ← RTL SDR As A Spectrum Analyzer ...

I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...

[Nicolas C Lewis] is churning out inkjet print head shield kits for Arduino. If you’ve always wanted to label or brand objects as part of a project this greatly simplifies the process. Using … ...