Hi On my CNC Chinese spindle I have 2 sets of wires. 1 set of 3 connects to W, V and U. The other set of 5 connects to the controller terminals marked HALL+, HA, HB, HC and HALL-. I’m assuming these are Hall output signals from the spindle. I currently control the spindle speed with a pot connected to the controller. I’ve measured between H+ and H- and I have 5v. Between say HA and HALL- I have approv. 2.35V on full speed and rising to 2.5v as I reduce the spindle speed. With control at 0 and the spindle no longer revolving I get 5v. Could I connect these to an Arduino with a LCD display to show me the spindle speed and if so how. Also would I be able to run this on battery so I can leave it attached to the motor controller. I’ve never used an Arduino before, but have done a wee bit of electronics.
Hi, A picture of which one you have might help get a quick answer.
This is the controller
This is the spindle
Have a look on the site you bought that from, I got one recently (have not tried it yet) It came with a $6 speed readout. Plugs in with 3 wires. Tom shows it in his last mpcnc build video towards the end, just before all hell breaks loose.
Thank you I’ll take a look
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