Hi All,
First post, hope it's not out of order.
I killed my STM32 in my taranis+ by d/cing the ribbons with the battery still connected. Found out why that was a bad thing after the fact.
Anyways, new chip soldered in, flashed firmware fine, all good, but:
1. When I turn it off, it goes into a boot loop of about 1/2 a second in length.
2. The left trim switch (aileron for mode 2) triggers "right" if you move it to the left
3. Switch B is hard set to up/back
I'm thinking I've shorted a lead or two on the STM 32, and was hoping someone with a bit of awareness of the board (or even a schematic) could point me to which pins are associated with the above connections. My eyes are getting sore from trying to find a short.
Any ideas?
Newb: Replaced STM32, boot loop when switched OFF
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Re: Newb: Replaced STM32, boot loop when switched OFF
How you removed old death STM32?
Reflow with hot fan or just cut pins one-by-one/
May be hot air stream too strong and shifted some C or/and R's?
Possible shorted pins also need check. Use power magniefing glass and LED torch.
for removing solder snot/drop between pins i use "wave soldering tip"
Reflow with hot fan or just cut pins one-by-one/
May be hot air stream too strong and shifted some C or/and R's?
Possible shorted pins also need check. Use power magniefing glass and LED torch.
for removing solder snot/drop between pins i use "wave soldering tip"
good food & warm summer
- MikeB
- 9x Developer
- Posts: 17993
- Joined: Tue Dec 27, 2011 1:24 pm
- Country: -
- Location: Poole, Dorset, UK
Re: Newb: Replaced STM32, boot loop when switched OFF
Check pins 1,2 and 3, these relate to switch B and a trim.
Mike
Mike
erskyTx/er9x developer
The difficult we do immediately,
The impossible takes a little longer!
The difficult we do immediately,
The impossible takes a little longer!
Re: Newb: Replaced STM32, boot loop when switched OFF
turns out I missed a few pins when soldering. Thanks for your help