Hacking Hardware Picofly - a HWFLY switch modchip

[FreeLander]

Is there any tutorial for installing rp2040-zero on oled switch?

Points on the OLED are the same, see important notes for Rp2 pinout.

 

[OMAR1982]

Success, my Mariko has married Picofly

I have chosen a different mosfet: IRF8736PBF because it has legs so soldering is much easier.
it looks like this:
View attachment 365542

and in my Mariko switch it looks like this:
View attachment 365543

Datasheet:
View attachment 365544
View attachment 365545

Green LED is coming on the "rp2040 one" in 1 second.
THANK YOU ALL (I've read the whole thread) it is a very hard mod but it is much fun.

the link of purchase please ?

 

[sergiochendry]

How can i check if my mosfet fine or not
i already change 2 time the mosfet
but still got CYAN

 

[-LX-]

the link of purchase please ?

https://www.darisusgmbh.de/shop/pro...RF8736-----N-Ch-30V-18A-2-5W-0-0048R-SO8.html

shop is in germany

 

[Frullone]

Hi guys, I salvaged the mosfet from an unused v1 flex cable and I need to install it into a Mariko switch.

According to a previous poster, it's a NP2016 mosfet (Here's the data sheet).

It has the same layout of the other more used mosfet and it looks a little bit weaker (but it was on the original flex cable, so I would assume it to still be plenty enough).

That said, considering that rehius himself said that single mosfet install to both caps should work without issues, does the attached scheme image make sense?

And assuming I don't short anything but the single mosfet is simply not enough will something bad happen or can I just desolder everything and wait for more mosfets?

Also, can I use simple epoxy to keep wires and components in place? UV resin would cost me a liver (bonus pic of the epoxy I got from the local electronics shop)

Thanks!

 

[FreeLander]

the link of purchase please ?

I noticed it's a bit more expensive than recommended ones. Less than a dollar for IRFHS8342, and 6$ for IRF8736PBF

 

[detilmalala]

hello friends, oled and lite does it have a fuse on the board? and where are they located?

 

[haipro287]

My switch lite can get in to no sd card screen but it can't boot to hekate and keep glitching (blue blink -> green loop). I'm using fw 2.65.

 

[abal1000x]

.

 

[detilmalala]

Maybe the RST line need cleans. I remember @rehius saying that RST line is sensitive.
And i see in the pio glitch, it kind of make the cpu in reset state, before glitching.

Post automatically merged: Apr 17, 2023

I think the fuse is inside the tegra, in the range of nanometer, can't be seen.

I mean a protection fuse, which cuts when there is an overload

 

[jkyoho]

Been repaired on hundreds of switch so far, I rarely see the Fuse/Charge port fuse cuts/blow itself for protection purpose, Switch dies but fuse alive for the most case.
And in theory, the fuse only cuts charging power but does nothing when you "overload" the internal system or installing extra chip and wires.

 

[detilmalala]

Been repaired on hundreds of switch so far, I rarely see the Fuse/Charge port fuse cuts/blow itself for protection purpose, Switch dies but fuse alive for the most case.
Any in theory, It only cuts charging power but does nothing when you "overload" the internal system or installing extra chip and wires.

but the oled switch and the lite have it? because i can't find it

 

[Deleted member 542674]

......

 

[jkyoho]

but the oled switch and the lite have it? because i can't find it

View attachment 365577

switch lite charge fuse.


SWITCH OLED charge fuse under the shield

 

[BlownUpTurtle]

Has anyone tried the Seeed Xiao RP2040 yet? only having components on one side I'm thinking it may fit a little bit nicer?

 

[jkyoho]

Has anyone tried the Seeed Xiao RP2040 yet? only having components on one side I'm thinking it may fit a little bit nicer?

My rp2040-xiao order should arrive tomorrow, will try it on

 

[BlownUpTurtle]

My rp2040-xiao order should arrive tomorrow, will try it on

I already have some WS boards, I'm just thinking the Seeed may be a cleaner install before going down the custom PCB route

 

[jkyoho]

I already have some WS boards, I'm just thinking the Seeed may be a cleaner install before going down the custom PCB route

yup, like the xiao boad has everything on the top board nothing left at other side.

 

[LogicalMadness]

View attachment 365579

switch lite charge fuse.

View attachment 365580
SWITCH OLED charge fuse under the shield

You do too much work for other people :/

Post automatically merged: Apr 17, 2023

Also, I made my own small addition to @Dee87's Hekate background.bmp

 

[jkyoho]

You do too much work for other people :/

Post automatically merged: Apr 17, 2023

Also, I made my own small addition to @Dee87's Hekate background.bmp

Wish I see less switch send in due to self mod failed