Sieg Tacho

Project of tachometer device for Sieg SX2 Mill/SC2 Lathe (and probably some others)

Hardware

To make this project you will need just three parts(not counting wiring)

• Arduino Nano:

• TM1367 4-digit 7-segment indicator:

• Connector:

Pinout

Thanks to Jeffrey Nelson we know the pinout:

If you're interested in what's happening on the port, have a look at these pages: https://macpod.net/misc/sx2_tachometer/sx2_tachometer.php

Schematic

Connect wires accoring Andrew Whale schematic:

Double check wiring: pins on display may be in different location!

Firmware

Use sketch from SiegTacho_v20 folder. To succesffuly build it you need to install TM1637 library by Avishay Orpaz using Library manager.

Thanks

Many thanks to Jeffrey Nelson(Macpod LLC), Andrew McWhirter and Andrew Whale for sharing information regarding this project.