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 ...

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 ...

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 ...

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.