Posts made by TunnelVision

@dc42:

If you PM me later this week I may be able to help.

I sent a message (I think), hope you got it.

What do you have for M558 and G31 in config.g?

Just to follow up, I ordered some sheets of Buildtak which seems to be working well as far as IR probing goes.

Thank you, I will do that.

@dc42:

Maybe you can find someone who has hot air equipment and can replace the MOSFETs for you. Is there a makerspace or hackspace near you? Which country are you in?

I'm in the UK but unfortunately don't know anyone into electronics. There is a FabLab here but they weren't keen on allowing the public in when I contacted them a while ago.

It seems to be a pretty common thing to do, damaging the fan MOSFETs.

I had connected Fan 0 to a mini 12V step-down module (the Duet Wifi is running on 24V) but I'm an idiot and had it reversed (i.e. Fan 0 going into the "out" of the converter and the fan connected to the "in"). The fan worked for a bit but when I changed the speed there was a spark. Of course I had to make things worse by connecting it the right way round to Fan 1 and killing that too. Perhaps I'm lucky that I still have one working PWM fan output and there doesn't seem to be any other damage to the board.

The dilemma I have is that I don't possess a hot air gun and I don't think I need one except for this task. I could possibly buy a Duex2 for about the same cost; I could have a go with just a soldering iron; alternatively I could live with just one controlled fan if I had the extruder fan on 100% all the time.

Here's a bit more info… the end that shrank the most was closest to the fan I think

Mounting and configuring the IR sensor on a HyperCube Evolution/Titan Aero/Duet Wifi has gone really well. Unfortunately I won't be getting "star baker" this week for my attempt at curing paint on a PEI sheet (the 3M sheet in the first picture isn't attached)

This was 2 hours @ 170°C in a fan oven.