There are many pendants for remote control of CNC machines. However, these are extremely overpriced, several 100.-€ for a box with a rotary wheel and a few buttons, that's a lot.
A good reason to build a nice device ourselves. Thereby we have the possibility to bring in our own ideas and to optimize the usability and the design. Since most of us also have a 3D printer, we can also build sleek and shapely cases. It's good if you have a friend at Drechseltechnik-Straubing who has a laser, so even the front panels look professional.
Thanks to LinuxCNC, the variety of functions is almost unlimited.
The new pendant should have the following:
This development shall of course be freely available for all Makers, including all documentation and software with source code.
The work was done in two steps
first we built a simple handheld device with all needed functions and created the matching LinuxCNC HAL files.
In a second step, the device was extended with a TFT color display.
Case from 3D printer: 8.-
Front panel: 4.-
Rotary switch with buttons: 6.-
cable, plug, cable gland: 5.-
TFT display 2.8“: 16.-
ESP8266 controller NodeMCU: 9.-
Total: 63.- €
even if you don't buy optimal and have a 3D misprint, the costs always stayed under 100.- for me.