Talk:V90

James Lancaster Sep 26 [1]

I simply haven't had time to work on it when I've felt good, or been working on others.

What needs to be done: The motors are 8 wires. Wires need to be identified by coil, and they will need to be changed from a 4+1 ground wire, to a 4 wire configuration to the wires, which will then need to be linked together, to effectively convert the motor from unipolar operation to bipolar operation. The plan would be to orient them in a serial manner. (Which uses a little less power, but should be fine for use with the router, as it's generally not moving very quickly.)

Once that's done, James S has gotten a power source ready, which I think is done. It's a simple manner to use grbl, and a Raspberry Pi, as a controller. So the parts for that are pretty much already there. The rewiring is the main step, which is gonna take some time. The rest can be setup very trivially.

If someone wants to do it, you'll need to desolder/disconnect the 8 wires coming from the motor from the 5 wire grey cable. Then you'll need to use a multimeter to verify which pairs of wire are each of the four coils. The datasheet is attached, but verify it!

After that, connect two coils together using wires from separate coils, effectively creating two large coils. The middle configuration on the datasheet.

Then you'll need to connect them to 4 of the wires coming from the grey wire, and then we'll need to hook them up to the grbl board, with the pairs together. It'll use bcnc as a guide on the pi. Which is either already ready or simply needs to transfer the image to an SD card.

Just so this is here, l can transfer it to the wiki, and reference later. 50 mm/sec is about where it's going to be where it's better than the setup was, so if you can keep your cutting below 50mm/sec x/y (about 120in/min) and about 20mm/sec z that would be good. That's less than the shopbot in rapid, but it's about the same speed it cuts. 75mm/sec (about 180in/min) and 30 are going to be about maximum travel. So it won't be as fast on rapids, but it will do better on cutting. (Assuming no mechanical issues interfere, which I don't think they will.)