1 is enough i have never had any device return to me yet. Your wire size is sufficient . i use 0.2mm magnet wire too. I meant that you check the reading on that mosfet the drain ever be grounded or the gate ever have any reading.
The drain is grounded. Both caps on the apu that get soldered to are the ground side.
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I’d really like to figure this out as I’ve never been able to use just one mosfet.
Last edited by BlueBeans,
here's what mine usually look like (and it always works)
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Ok I’ll give this a try. Thank you.
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It’s still doing the same thing. The mosfet I’m using is a IRH 8342.
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Now all I get is ** RST not connected. It is ver much connected and clean.
Last edited by BlueBeans,
The mosfet type is ok. I have at least 30 installs now with the same mosfet and always in single configuration.
One thing I always do is that I pre-tin the wire in the places where it's going to be soldered to make sure that the enamel coating is gone. A little blob of solder on the tip of the iron (400°) and a little bit of flux on the specific spot on the wire, hold the wire inside solder blob for a couple of seconds (it turns black then evaporates) and you are good to go.
That’s what I do as well
what size wire are you using?
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I use the same wire when I do it with a flex cable and have zero problems
Same one 0.2mm. In the photo I was trying out different mosfets but as you can see the wiring is the same. I don't know, it's weird, everything looks ok...That’s what I do as well
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I use the same wire when I do it with a flex cable and have zero problems
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Yeah I just don’t get it. Do you use different wire for the cpu or is it all the same?
Yeah mine is 32awg all around. Just doesn’t make any sense. I’ve got to be missing something.
Ok, so points 1-1-1 all have continuity right? As well as points 2-2?Just used a flex cable and it booted right up. Didn’t change any of my wiring.
Nr.3 Is that glue or solder?
Lets get to the bottom of this thing
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Those all have continuity. 1 to 1 and 1-2. 3 had an ohms reading of 14. #3 was solder.Ok, so points 1-1-1 all have continuity right? As well as points 2-2?
Nr.3 Is that glue or solder?
Lets get to the bottom of this thing
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I’m curious though. Source and drain are being connected to ground points on the apu. The caps we connect to is the ground side.
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Point 3 is not soldered to the shield like it looks. Was just sitting on top.
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There has been progress. Someone suggested to me about pulling a mosfet from a v1 flex and it worked the first time! Idk if maybe I got a bad batch of mosfet but I’ll be either ordering more or ordering some of the ones from the v1 flex. Here are the mosfets if anyone is interested.
https://www.lcsc.com/mobile/product-detail/MOSFETs_NATLINEAR-NP2016DR-N-G_C2991144.html
Last edited by BlueBeans,
Well that explains it. Might be some fake/bad batch.
I ordered from both of these they are all good:
https://a.aliexpress.com/_mNCXyTI
https://a.aliexpress.com/_mNwL9g8
hi, can someone send me a diagram of where data + and data - are on the rp2040 zero to hook up a usb 2 cable to reprogram? I have an orange light on bootup and no CFW loading
or you can do like this, never failed on me.
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