Below is the schematic (paper scan copy) of such a cheap do it yourself CD4541 programmable timer relay kit available in CKD (complete knock-down) form. Hope this helps you quickly learn the art of ...

The programmable timer features and up counter ... the Ninja Counter itself using an external Arduino Uno! It includes a relay for high power switching applications, an active buzzer that acts ...

This is a snap with a microcontroller with a proper timer, but he recently heard about a very cool programmable timer chip that’s also a 555. Of course CSS555 timer chip has an obscure programmi ...

They compared a Python-based control loop on a Raspberry Pi 3B against an C0-12DD1E-2-D AutomationDirect CLICK Programmable Logic Controller (PLC) using a simple water heating example. A major ...

This is a very simple touch sensor switch that is build with the 555 timer IC. You just need to touch the metal plate and the relay gets energised and is kept in this state for about 100 seconds, then ...

Amazon offers the Leviton Vizia 24-hour Programmable Indoor Timer with Astronomical Clock for $22.10 Prime shipped. For comparison, it has a list price of $60 but usually sells for around $30 online.