at the top of the case to the right, do you have two large relays and a smaller one to the left.

everything working fine.

it's a great feeling when the motors respond isn't it?. You could have pm'd me and i would have guided you through this.

are you looking to keep the existing 4000rpm top speed, as an easy way to get more power would be to increase the pulley reduction to the spindle.

One example on my triac, as i traversed the x axis the y axis would add steps randomly. This didn't happen when i first converted the triac, but appeared after a few days use.

Needless to say the caps cured the fault.

I found that the e-stop would trigger randomly Do you think that a very short emergency stop signal, triggered by noise, is the cause of steps being inhibited then ? (or even the direction signal being switched off) I agree noise could well cause such issues - We once had a spindle drive wiring iss...

on my machine, the caps are used to stop interference on the INPUTS rather than the step outputs. I have placed the caps on the x y and z home connections and the e-stop connection. I found that the e-stop would trigger randomly and the axis would trigger also, but with the caps fitted this stopped....

add 100nf caps on all inputs, i had problems with added and lost steps before adding them.
I use the same transistor buffers and have had no problems since adding the caps.

not sure if you still have the stepper drivers and spindle drive, if so can you pm me details please.

very usefull, thanks.

i would like this, can you pm me some details

i think the home sensors are 12v (correct me if i'm wrong), and if you trace back either side from the socket you'll see what the cables connect to. The cables are colour coded so you'll see where they're going. If you need any help i can help identify wires over the phone.

i may have one

have you thought of a set of blacksmiths drills, they go up to good size and have a 3/8" or 1/2" shaft.

quick update, got everything going a while back, but i've been so busy playing i forgot to post about it.

Thanks for all your help, time for a lathe now.

here you go, the first is the analogue board



lol, looking at the pic of the analogue board i can see R19 is a resistor.


The second is the spindle board

datum switches are sorted and the emergency stop. :D Just got the spindle to do now. is there a diagram of the spindle board and analogue board, i'm hoping that there is a digital signal into the analogue board and that drives the spindle board. analogue board is - R19 32dbz spindle board has no det...

yes, that's sort of what i meant. :oops: :) , my lack of terminology is showing. They feel like microswitches and by the look of it they are nc to ground, switching to open circuit on activation. My job for today is to wire them up and successfully home the machine. It looks like 58 is the common gr...

Well a few days later and with the great info supplied by you guys, i have mach 3 controlling my novamill, many thanks. For the princely sum of £13.80 (breakout board), and a few connectors salvaged from an old photocopier (a good source for steppers), i have control. There were a few hiccups along ...

well could that have been any easier, mega thanks guys. I wired in a breakout board to the correct pins using some multiway sockets from a salvaged photocopier (which is a good source for steppers). After a few odd reactions, no y axis, y on the z axis and only one direction. I looked at the mach 3 ...