Hello all,
Starting to plan out my machine. i am a little confused about wiring up all the switches.
Does anyone have or know where I can find a diagram or schematic on how to wire up the homing and limit switches to a TinyG?
Thanks in advance.
J
TinyG Homing & Limit Switches
From the original Synthetos forum (2011–2025)
We don;t have a diagram, but wiring the switches should be pretty straightforward. If all you want are homing switches (no limits) then you need 3 switches:
- X minimum travel - on the left-hand side of the machine by convention
- Y minimum travel - at the front of the machine by convention
- Z maximum travel - at the top of Z travel by convention
Then just wire the 2 wires to ground and Xmin, ground and Ymin, and ground and Zmax, respectively. It's better to use the normally closed settings (NC). Set the $ST setting accordingly.
I'd start there and get it working, then try the limits if you want them.
Be advised, switches and switch wiring can pick up noise and fire erratically - particularly if you have a noisy spindle. Best to use twisted pair shielded wire, and attach the shield to ground at the tinyg side.
Has anyone used opto interrupters as limit / home switches?
I wouldn't mind seeing the circuit you use.
Thanks,
Tom
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