Hacking Hardware Picofly - a HWFLY switch modchip

[NandieeHU]

NS Lite SOP08 Mosfet w/ 3.3k Resistor

I'm glad someone is using SOP instead of QFN. Using QFN is pointless in this situation.

 

[ZXEdward]

Hello，gentalmen. I meet a problem after I welded RP2040.After pressing the power on button, the light of RP2040 will first turn blue, then turn red, and then turn off the switch to directly enter the original system. I changed the welding position from EMMC to motherboard and replaced the rubber wire with enameled wire,but the problem is still be not solved. Can anyone help to tell me what the problem is？

 

[QuiTim]

Pretty clean. What did you use to cut the shield?

Post automatically merged: May 3, 2023

I almost always get different results when closing it up, it's not until I triple-check the wires that it works. Starting to wonder if enamel wire is the way to go. What wire type do you prefer?

I usualy use ptfe, teflon, silicon when possible. With enamel everything looks like an unfinished job
Just got this yesterday https://a.aliexpress.com/_mO58PBe
I will give it a shot a post back.

 

[A-Hacked-Soul]

Alternate PICOFLY Points DAT0 , CMD . CLK by Modyfikator​

Post automatically merged: May 2, 2023

Try connect this point to fix DAT0

I might try that DAT0 tomorrow.

 

[abal1000x]

Hello，gentalmen. I meet a problem after I welded RP2040.After pressing the power on button, the light of RP2040 will first turn blue, then turn red, and then turn off the switch to directly enter the original system. I changed the welding position from EMMC to motherboard and replaced the rubber wire with enameled wire,but the problem is still be not solved. Can anyone help to tell me what the problem is？

Seems like purple, emmc failed. Add the resistor value to around 100 ohm to minimalize the noise, might fix.

 

[Modi]

Correct and Clen installation Picofly on Oled 2022

 

[nico77]

Hello，gentalmen. I meet a problem after I welded RP2040.After pressing the power on button, the light of RP2040 will first turn blue, then turn red, and then turn off the switch to directly enter the original system. I changed the welding position from EMMC to motherboard and replaced the rubber wire with enameled wire,but the problem is still be not solved. Can anyone help to tell me what the problem is？

im in the process modding my lite, and i meet situation like you...
from your video, its not red color, looks like purple or pink . idk.

but i got same situation like you, which from blue > purple(maybe wasnt sure the color) , and lead to boot regular ofw.
but after that i resoldering my cables to resistor47, and i meet red led light=which make the screen only blackscreen, no boot to ofw. (after that i found my r47 soldering to rp2040 kinda bad joint/cracked, i use pinset and touch the R47 and it just fell off)

since im only testing it, i havent cut my cables from D0,CMD,CLK to R47 rp2040, and the cable pretty long, soon prob ill cut to a properly measure length.
(prob in my situation bad joint on the point, also bad soldering/cold soldering/cracked solder)

im pause and waiting my uv light and new soldering iron to continue this process, last time im too careful with the D0,CMD,CLK point, im afraid if i broke the point. (for now i remove all wiring from the RP2040 and my lite still can boot to OFW with no problem)

can someone explain what red led light on rp2040 means ?
also which type cable better for the point ?
for now im using enamel 0.1mm for the point D0 CMD CLK

Post automatically merged: May 3, 2023

Seems like purple, emmc failed. Add the resistor value to around 100 ohm to minimalize the noise, might fix.

i saw from the pico guide, they add double resistor R47+R47 total R94, is it gonna fix ?
for purple led indication problem ??

 

[QuiTim]

Another V2 install.
Used 38awg for data lines, 32awg for 3v3 and GND.
I also finally got my hands on 8342 QFN and I have to say, although the soldering is a bit more challenging the end result is more satisfying as it fits nicely and there is no need to cut anything.
Single mosfet worked like a charm.

 

[FreeLander]

I usualy use ptfe, teflon, silicon when possible. With enamel everything looks like an unfinished job
Just got this yesterday https://a.aliexpress.com/_mO58PBe
I will give it a shot a post back.

Added to cart. Please let us know.

 

[QuiTim]

Added to cart. Please let us know.

This is the wire i just used (see post above).
Works great and it tins very well. Also I guess since it's single core it keeps the shape better when bent so you can route the wires more easily.
It's the yellow/orange one in this photo.

 

[SkylerTakashi]

Can i use these? 0.02mm cooper

Post automatically merged: May 3, 2023

Can i use these? 0.02mm cooper

 

[QuiTim]

Can i use these? 0.02mm cooper

Post automatically merged: May 3, 2023

Can i use these? 0.02mm cooper

no bro, this is too thin for anything.
You need 0.2 (for mosfets at least) not 0.02

 

[rehius]

LOL what?

looks like Waveshare made a new "dev board" with detachable USB, resistors (47 ohm?) on pins 27, 28, 29, and "custom jumpers" on pins 24, 25.
https://www.waveshare.net/shop/RP2040-Tiny-Kit.htm

 

[Takezo-San]

Another V2 install.
Used 38awg for data lines, 32awg for 3v3 and GND.
I also finally got my hands on 8342 QFN and I have to say, although the soldering is a bit more challenging the end result is more satisfying as it fits nicely and there is no need to cut anything.
Single mosfet worked like a charm.

So, in this singular MOSFET set up, are you running 2 wires from the drain to the 2 caps? Looks like one but its hard to tell but not sure how one wire would be possible!?

 

[Adran_Marit]

LOL what?

looks like Waveshare made a new "dev board" with detachable USB, resistors (47 ohm?) on pins 27, 28, 29, and "custom jumpers" on pins 24, 25.
https://www.waveshare.net/shop/RP2040-Tiny-Kit.htm

curious, whats pins 24/25 the led?

 

[QuiTim]

So, in this singular MOSFET set up, are you running 2 wires from the drain to the 2 caps? Looks like one but its hard to tell but not sure how one wire would be possible!?

Just one wire. It's not a problem, just bend the wire before soldering so you dont put alot of strain in the capacitors afterwards.
Alot of people did it, it works great (if you use single mosfet)

 

[Dee87]

LOL what?

looks like Waveshare made a new "dev board" with detachable USB, resistors (47 ohm?) on pins 27, 28, 29, and "custom jumpers" on pins 24, 25.
https://www.waveshare.net/shop/RP2040-Tiny-Kit.htm

well thats awesome for us

wonder why they created this beauty

 

[SQc04]

PICOFLY ИX module (verified)
https://github.com/SQc04/PICOFLY-X
Use easyeda PRO
https://easyeda.com/
The CPU cable will be released later
The resistor uses 0402 and is not recommended for novice welding
The circuit board is 0.8mm thick

V0.8.1+ supports jumpers, V1 V2 LITE OLED universal

 

[Takezo-San]

Just one wire. It's not a problem, just bend the wire before soldering so you dont put alot of strain in the capacitors afterwards.
Alot of people did it, it works great (if you use single mosfet)

Oh I Seeeeeeeeeeeee. Those supplementary images made it a lot clearer. Basically we get a link from, cap-cap & then cap-drain, in one route (so to speak).

 

[Modi]

LOL what?

looks like Waveshare made a new "dev board" with detachable USB, resistors (47 ohm?) on pins 27, 28, 29, and "custom jumpers" on pins 24, 25.
https://www.waveshare.net/shop/RP2040-Tiny-Kit.htm

View attachment 368616
View attachment 368617
PICOFLY ИX module (verified)
Use easyeda PRO
https://easyeda.com/
The CPU cable will be released later
The resistor uses 0402 and is not recommended for novice welding

V0.8.1+ supports jumpers, V1 V2 LITE OLED universal

Great job mate. How fast they make this pcb?