Program to run on an arduino that opens a gate to allow a cat to eat when it approaches with the correct RFID tag on its collar. Useful if you have two or more cats that are on separate diets. ... See ...

While we wouldn’t want to document a computer motherboard with ASCII schematics, it’s great for a quick-and-dirty circuit diagrams. Not exactly schematics, but [Duckman] has some Arduino ...

Circuit Diagram. In this Arduino based Cat Feeder, for Getting Time and Date, we have used RTC (Real Time Clock) Module.We have used the 4*4 Matrix Keypad to set the Pet’s eating time manually with ...

All it does is time the activation of the relays that control the gas flow, power, and wire feeder, so [Brett] decided to use an Arduino instead. The welders control circuit runs at 24V, so an ...

Arduino; PT2272 encoder; 434 MHz RF receiver; This circuit is even simpler. Connect the RF receiver output to the DIN of the PT2272. Then put each output pin (the four bits) into the Arduino pins 3-6.