Hacking Hardware Picofly - a HWFLY switch modchip

[Flaviocarvalho]

Hi....tried again but now i get pink/purple light....any tips? Resoldered the points but still got this fu**** light

 

[SQc04]

The screen finally lights up

 

[ecko4711]

Finally it worked! I just soldered different solder points following this tutorial and this was my solution for my v1 switch



I also kinda user the flex V2 and worked too.

 

[Flaviocarvalho]

Is there any alternative points for d0 clk and cmd on switch lite?

 

[deeps]

Is there any alternative points for d0 clk and cmd on switch lite?

yes, underneath the emmc. What's wrong with the existing points? They are nice enough as is.

 

[Adran_Marit]

Is there any alternative points for d0 clk and cmd on switch lite?

Lol unless you wanna recall the emmc, then nope

 

[cfshen]

Also I can't backup emmc boot 0 and boot1

Post automatically merged: Apr 26, 2023

@rehius and everyone

I installed picofly and everything works but when booting to OFW I got blue screen and CFW I got error. How to fix software or hardware?


Some say software rebuild nand some say resistor point a 4.7k or 10k

Replace the resistor 4.7K Cmd

 

[hothotramen]

Sorta unrelated, but it looks like Aliexpress sellers are decreasing the cost of the Instinct/HWFly chip kits and bumping the prices of their ribbon cables - specifically the dat0 adaptor.

They're scared

 

[jkyoho]

View attachment 368149
View attachment 368150
The screen finally lights up

what was causing the yellow light?

 

[bilalhassan341]

Try to extend your solder points like this first.
If it doesn't work, add another mosfet.

can we use a cpu shield ground as a mosfet source like the photo you attach?

 

[lightninjay]

can we use a cpu shield ground as a mosfet source like the photo you attach?

Yes

 

[bilalhassan341]

Can we use both points for DAT0/CLK/CMD/RST on Emmc and logic board at the same time on v2?

 

[lightninjay]

Can we use both points for DAT0/CLK/CMD/RST on Emmc and logic board at the same time on v2?

That would not be advised and would be entirely too redundant, to the point that you would be over-complicating an install by doubling your work.

Edit: If you mean "can I pick and choose where to solder to" not "should I solder to both the dat0 on the EMMC AND the dat0 on the logic board" then that is fine, use the most accessible point.

 

[LogicalMadness]

Hi....tried again but now i get pink/purple light....any tips? Resoldered the points but still got this fu**** light

Pink and purple are pretty hard to tell the difference between if you haven't seen both colors to KNOW the difference (still waiting on an answer to 'can we cycle the colors').

From my experience though, it's definitely either your cmd or clk line (purple and pink error lights, respectively).

Usual advices apply: Flux, clean well, inspect for shorts\cut traces\full-solder-bonds, use a DMM to final-check that none of the lines are grounded, use DMM's diode mode to be more certain that your lines are actually hitting emmc\cpu (red to ground, black to each line, dat0\cmd\clk\cpu should read .4 - .6v, if I remember correctly).

Post some pics of you can.

@lightninjay is there a definitive diode-mode-check voltage for dat0\cmd\clk\rst\cpu? I didn't see anything mentioned in the updated Definitive Guide, now that it has a DMM in the tools section

 

[Ganesha0112]

Xiao seed 2040 issue.

I only have some seconds of green led then purple and the console boots OFW.

I check and the DAT0 is correctly soldered.

Any idea can what happen? I use the 2.65 FW

 

[sergiochendry]

View attachment 368149
View attachment 368150
The screen finally lights up

wheres you get the chip?
look good and clean

 

[FreeLander]

Strictly cosmetically speaking, Out of 10, how much would you give this install? I welcome any ideas to make it prettier.
0.1mm to CLK, CMD. All other are 0.2mm.

 

[LogicalMadness]

Strictly cosmetically speaking, Out of 10, how much would you give this install? I welcome any ideas to make it prettier.
0.1mm to CLK, CMD. All other are 0.2mm.

Your heatsink is going to cause issues with the wires\resistors

 

[FreeLander]

Your heatsink is going to cause issues with the wires\resistors

Thanks! Good point. How would you position the rp2040? I'm not very concerned with flex cable because I'll use MOSFETs from now onwards, and will get the wire out from the same mini lock I use to get the C-point wire out.

 

[LogicalMadness]

Thanks! Good point. How would you position the rp2040? I'm not very concerned with flex cable because I'll use MOSFETs from now onwards, and will get the wire out from the same mini lock I use to get the C-point wire out.

Funny you should ask, I'm actually still experimenting with how I want to finalize my PFly installs. See my 'cut' posts/question

Generic answer: Align the RP2040, on top of the shielding, as far to the right and top/up as you can without exceeding the shield (so as to not cover M9 (right) and not interfere with removal/installation of the motherboard (top/up)).

Bonus tip: Before you remove the heatsink, gently draw a line across the shield so you know exactly where the heatsink sits later on. (@lightninjay Definitive Guide worthy?)