Denford Novamill Mach3 conversion

[Miller]

Yes, that's the seller I bought the BOB from. It came as a complete package with 3 x 2M542 drivers. Still in the post but should be getting it quite soon.

The motors are rated 1.5A and 3A at 30V, so I will keep about same amp rating and feed 36V then.

What I had in mind for power supply is this. It shouldn't make more than £30 posted and looks nice quality and DIN mounted, but if it's less than ideal because of the lower voltage, I'll go for the 36V as you suggested.

Just to confirm, your circuit has 2 x 470K and 3 x 47K resistor. I have selected this for C1, and this for C2, and this for the op amp.

[EddyCurrent]

I had to get up at 4:30 am this morning to get rid of my duff drawing, couldn't sleep knowing it was there

On the controller side, it looks like for the Sprint box that Miller has, +10 V comes from terminal 1; the control input ("0-10V to controller") goes to terminal 2; and 0V is on terminal 4.

John, it looks to me like the input to the drive is terminal 3, terminal 2 goes to a pot for 'minimum speed' which creates a potential divider along with the external pot to give an offset from zero.

[JohnHaine]

Oops! Eddycurrent, you're quite right, terminal 3. Terminal 2 is not connected.

Miller, the eletrolytic you selected is a surface mount type, is that what you wanted? The other one is leaded. Maplin is a good place for miscellaneous components. Well, the 36 V works fine for me, lower voltages may work but the drives are fine with 36. That's the package I bought too of the BoB and drivers.

John.

[Miller]

Miller, the eletrolytic you selected is a surface mount type, is that what you wanted?

John.

It was the only option for a 10V 10uF. The closest through-hole I can find is 16V.

[EddyCurrent]

This is a good place for components too;

http://www.rapidonline.com/Electroni...tic-Capacitors