Pin name H6 and H7 of Expansion Breakout

FBG

I want control a normal relay 24V with H6 and H7 of Expansion Breakout.
For this i config:
M950 P7 C"exp.heater6"
M42 P7 S0

M950 P8 C"exp.heater7"
M42 P8 S0

But nothing happen, i think that the name Pin is wrong.
Also tested e6heat, e7heat.

Anybody know the correctly PinName?

Best Regards

droftarts

@FBG looks like the pinout is correctly named, see https://duet3d.dozuki.com/Wiki/RepRapFirmware_3_overview#Section_Pin_names_for_Duet_2_WiFi_Ethernet

What voltage does the relay need to operate? If I remember correctly, the heater pinouts are 3.3V.

Check the Gcode dictionary for M950 and M42 that you are using them correctly, too.

Ian

FBG

@droftarts said in Pin name H6 and H7 of Expansion Breakout:

https://duet3d.dozuki.com/Wiki/RepRapFirmware_3_overview#Section_Pin_names_for_Duet_2_WiFi_Ethernet

The relay work at 24V, The M950 and M42 i think that is ok, because i test in others heater outputs and work fine..

FBG

Just checked the voltage between GND and Heater6 PWM.
Nothing happen when i turn on or off

Phaedrux

Were you able to resolve this?

FBG

Still not resolved... I need help from somebody that know this

A Former User

the pin names should be correct according to docs, ~~but I'm seeing the same thing; config you posted will not control heater7 on the expansion port (wihtout the breakout) but say heater 3 works fine (didn't test the rest)~~

dc42

The signals on the EBOB H6 and H7 outputs are 5V and they are inverted compared to the exp.heater6 and exp.heater7 signals. So it's probably best to refer to them as duex.heater6 and duex.heater7.

A Former User

Given it should have worked, concluded maybe H7 was defective, tried another board and it works as expected

;exth57test.h
;set up pins
M950 P5 C"exp.heater5"
M950 P6 C"exp.heater6"
M950 P7 C"!exp.heater7"

;toggle pins at 1hz forever.
while true
  M42 P5 S1
  M42 P6 S1
  M42 P7 S1
  G4 P500
  M42 P5 S0
  M42 P6 S0
  M42 P7 S0
  G4 P500