topic_unsolved Pin name H6 and H7 of Expansion Breakout
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?
@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.
The relay work at 24V, The M950 and M42 i think that is ok, because i test in others heater outputs and work fine..
Just checked the voltage between GND and Heater6 PWM.
Nothing happen when i turn on or off
Were you able to resolve this?
Still not resolved... I need help from somebody that know this
A Former User last edited by 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)
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 last edited by
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