Hacking Hardware Picofly - a HWFLY switch modchip

[superxoi]

What do you mean? Like turn it on and off checking the error code? I can get two to work with the mosfets I have but never 1. Could the wiring be too thin?

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.

 

[BlueBeans]

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.

Post automatically merged: Dec 13, 2023

I’d really like to figure this out as I’ve never been able to use just one mosfet.

 

[deeps]

The drain is grounded. Both caps on the apu that get soldered to are the ground side.

Post automatically merged: Dec 13, 2023

I’d really like to figure this out as I’ve never been able to use just one mosfet.

here's what mine usually look like (and it always works)

 

[BlueBeans]

here's what mine usually look like (and it always works)

Ok I’ll give this a try. Thank you.

Post automatically merged: Dec 13, 2023

here's what mine usually look like (and it always works)

It’s still doing the same thing. The mosfet I’m using is a IRH 8342.

Post automatically merged: Dec 13, 2023

Now all I get is ** RST not connected. It is ver much connected and clean.

 

[QuiTim]

Ok I’ll give this a try. Thank you.

Post automatically merged: Dec 13, 2023

It’s still doing the same thing. The mosfet I’m using is a IRH 8342.

Post automatically merged: Dec 13, 2023

Now all I get is ** RST not connected. It is ver much connected and clean.

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.

 

[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?

Post automatically merged: Dec 13, 2023

I use the same wire when I do it with a flex cable and have zero problems

 

[QuiTim]

That’s what I do as well what size wire are you using?

Post automatically merged: Dec 13, 2023

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...

 

[dehydrated_lemur]

here's what mine usually look like (and it always works)

you don't need to connect to sp2 also?

 

[BlueBeans]

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...

Yeah I just don’t get it. Do you use different wire for the cpu or is it all the same?

 

[QuiTim]

Yeah I just don’t get it. Do you use different wire for the cpu or is it all the same?

For the cpu I use 38/40awg, so technically yours should work better

 

[BlueBeans]

For the cpu I use 38/40awg, so technically yours should work better

Yeah mine is 32awg all around. Just doesn’t make any sense. I’ve got to be missing something.

 

[deeps]

you don't need to connect to sp2 also?

no need, works fine without it

 

[BlueBeans]

Just used a flex cable and it booted right up. Didn’t change any of my wiring.

 

[QuiTim]

Just used a flex cable and it booted right up. Didn’t change any of my wiring.

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

 

[BlueBeans]

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

Those all have continuity. 1 to 1 and 1-2. 3 had an ohms reading of 14. #3 was solder.

Post automatically merged: Dec 13, 2023

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.

Post automatically merged: Dec 13, 2023

Point 3 is not soldered to the shield like it looks. Was just sitting on top.

Post automatically merged: Dec 13, 2023

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

 

[QuiTim]

Those all have continuity. 1 to 1 and 1-2. 3 had an ohms reading of 14. #3 was solder.

Post automatically merged: Dec 13, 2023

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.

Post automatically merged: Dec 13, 2023

Point 3 is not soldered to the shield like it looks. Was just sitting on top.

Post automatically merged: Dec 13, 2023

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

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

 

[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

I ordered directly from Digikey. Bought 100 of them. They work i pairs. Just both the single. Oh well. Ordered $200 of the new ones for $21 shipped.

 

[DangerMouse]

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

 

[cgtchy0412]

Trying the single mosfet again. Is this how it is supposed to look? When I put it all together my error code was ==*. Drain and Source are grounded but not touching. Is that right?

or you can do like this, never failed on me.

 

[BlueBeans]

or you can do like this, never failed on me.

I don’t even know what’s going on here lol