external drivers not working

jay_s_uk

What board do you have and where/how do you have them connected?

mitchel kraai

I have the duet board v1.04. With the breakoutboard.
I conected all the 6 ports, S+ S- D+ D- E+ E-.

jay_s_uk

your driver mapping is incorrect then.
Please see here https://duet3d.dozuki.com/Wiki/Duet_Expansion_Breakout_Board

mitchel kraai

no I dont think so, my z motor is connected to E2 that is port 5.
I assigned my Z to 5.
M569 P5 R1 T2.5:2.5:10:5
and this is the line for the Z motor.

jay_s_uk

is the R value correct?

Rnnn Driver enable polarity: 0 = active low, 1 = active high, -1 = driver is always disabled and is not monitored (default 0)

Which side of the driver do you have the signal from the board wired to?
I have mine wired to the positive side of direction, pulse and enable, with R set to 0.

Are you also using M564 H0 or setting G92 Z0 to allow the motor to be moved without homing?

mitchel kraai

I tried R1 and R0, it makes no differense.
If I am correct you conected S+ from the break out board to S- on the driver? the same as D and E?

yes I have also the M564 H0 in my config

jay_s_uk

I don't use a breakout board (as I'm running an SKR Pro) but you would typically connect Step+ to Pul+, Dir + to Dir+ and Enable+ to ENA+. The same goes for the negative outputs.

mitchel kraai

oke, how do you have your dip switches on the drivers?
and do you have your driver connected to the 5v pin or 3.3v pin?
I am thinking of skipping the break out board for testing.

jay_s_uk

Mine just has dip switches for steps per revolution and driver current.
And I run mine off 3.3v. They seem to run fine from that but your experience may vary.

There is a note about this on the breakout board page.

The Duet Expansion Breakout Board uses a differential output signal of -3.6V to +3.6V. The differential outputs help the LEDs in the optocouplers in most drivers turn off faster. Also they are compatible with drivers that accept RS485 signal levels instead of 5V. Most external drivers are quite happy with the 3.6V differential signals. However, for those few drivers that really do need 5V, you can achieve this by connecting STEP+ from your driver to +5V, which is available on the H6_PWM and/or H7_PWM pin headers (see wiring diagram above), and STEP- for your driver to STEP- on the expansion board. Similarly for DIR and ENA.

mitchel kraai

I tried that also, it makes no difference.
currently I am completely stuck...

jay_s_uk

can you post a photo of your wiring?

mitchel kraai