The ADT Meister is a simple, reliable chuck timer designed for makers who want accurate timing with minimal effort.
This build uses inexpensive electronics—all parts cost around 10€—and the assembly is straightforward, making it perfect for beginners as well as experienced tinkerers. The design is compact, functional, and easy to print.

If you’d like to use the same code I run on mine, just send me a message and I’ll share the script with you.