Duet 3 6hc and expansion 3hc 12v io-7-9 and 6-8 no redout
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@jsinicro still can't figure out why I am getting 12 volts out of the 4 pin header out 3 and 4 where the fan and pump are connected but on the 2 pin header out 6-8 not getting 12V? the picture above show the connections this is the expansion 3hc.
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@jsinicro this is consistent the same results on the main board
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@jsinicro Just wanted to point out the wiring diagram for the 3HC is labeled wrong taking there is no 2-pin out 7- out-9. it has to be according to the wiring picture out out-6,7,8
from the documentation:
Medium current/ 2 wire fan outputs
2-pin KK headers labelled OUT7 thru OUT9: these are intended for fans. Maximum recommended current 2.5A each. Flyback diodes are built-in to these outputs. (see note on 12V max current below) -
@jsinicro new question?
the 2-pin KK headers, well there is only one on the 3HC this puts out v-fused which is 24 volts verified that, but what are the maximum amps? -
@jsinicro that's all the documentation says:
2-pin KK headers labelled GND and V+: This is for powering an always-on fan or similar.The documentation for the pumps say 823mA I have 2 but they are rated at 12V the set up that I have when I turn on power I have to unplug and plug one of them back in in order to have them working, which is not right as they are on 2 separate 3HC boards.
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@jsinicro I will use the 24V and step it down to 12V
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@jsinicro I suppose I could use the JST high amps step that down and connect both
![IMG_1898[1].JPG](/assets/uploads/files/1620348597316-img_1898-1-resized.jpg)
