Hacking Hardware Picofly - a HWFLY switch modchip

[QuiTim]

can you post a picture

Same place just don't cut the shield and route the wires through top left corner

Post automatically merged: May 11, 2023

In order to NOT cut the shield and fit the Picofly RP2040-Zero board:

• For OLED --> USB + buttons removed and RP2040-zero on top of RAM heatsink (where HWFLY usually sits) --> there's at least 0.5mm distance between the shield and the RP2040 board upon final assembly.
• For Lite --> USB + buttons removed and RP2040-zero on top of eMMC shield --> it's a perfect pocket when closing the shield, fits well and no pressure to RP board. (If you keep it on top of RAM heatsink, it will create a bump and force the assembly).
• For V1/V2 --> don't know, will let others to comment.

You can get even a slimmer install if you remove as well the LDO on the back of RP2040.

Always remember to insulate everything (including the sides of the RP2040) with polyimide or similar tape.

I think this info is worth including in the next Definitive Guide update (with addition of the comment from @d.b)

 

[Interceptor777]

JLC and Mouser order just came in, should be a fun weekend.

 

[LogicalMadness]

Same place just don't cut the shield and route the wires through top left corner

Post automatically merged: May 11, 2023

I think this is info worth including in the next Definitive Guide update (with addition of the comment from @d.b)

CLEAN CUTS! You did that with an exacto-blade?

 

[ChrisV8]

Can everyone say me How much Ohm here are at 3,3v loose mine

 

[LogicalMadness]

Can everyone say me How much Ohm here are at 3,3v loose mine

Take it to a professional

 

[angelC992]

any idea to how do this without a dremel

Scissors. I have made it

Yes ir cyna problem with mosfer.Make now over 30 + oled check install

Post automatically merged: May 11, 2023

oooo for me some problem :
hello dear, thanks for your order, but sorry to tell you that RP2040-Tiny-Kit has small quality problem, factory has recalled the products and reproduce. it need about another 1 month. Could you please extend the delivery time by another 1 month? if you need the products urgently, please cancel the order. Sorry for any inconvenience caused. regards, Gintech team

Same here.

I asked them if there's a SMD value resistors issue near of 26-27-28 points hahaha

 

[QuiTim]

CLEAN CUTS! You did that with an exacto-blade?

With a cheap box cutter. First time I applied little presure (to make a dent/path) then did another 2 passes through the same line with alot of pressure. Once you see the marks on the oposite side, just wiggle it 2-3 times and it snaps clean off leaves almost no residue.

 

[LogicalMadness]

With a cheap box cutter. First time I applied little presure (to make a dent/path) then did another 2 passes through the same line with alot of pressure. Once you see the marks on the oposite side, just wiggle it 2-3 times and it snaps clean off leaves almost no residue.

*Borat* Ah-very niceuh!

Derp, obvious when think about it.

Approach it just like...
sheet...
metal...

 

[linuxares]

*Borat* Ah-very niceuh!

Derp, obvious when think about it.

Approach it just like...
sheet...
metal...

Sheet metal?
Now I'm curious

 

[LogicalMadness]

Sheet metal?
Now I'm curious

Very easy to "score" (spelling? IE scratch) the metal and then bend it til it breaks. The 'cut' comes out clean, if done well (see the metal fatigue I was referring to earlier for whoever bends their wires to test solder joints).

 

[nico77]

hello guys...

so im about to resolder back my mosfet, now im using enameled 0.2mm

Spoiler: enameled 0.2mm

but i got problem.

i cant melt the solder lead to the tip enameled
i wanted the lead solder melt and stick properly to the enameled point
mmmn.... any tips how to melt it ?
im using 300-350 heat

Spoiler

i follow this video :
SolderJS #135 - The BEST Way to Tin Enameled Wire

but still wont sticky

help
thx


(the purpose , so i can easily solder it to the cpu caps resistor from the mosfet D(drain) to the cpu caps.

*this picture, i want my enamaled 0.2mm cable can be soldered melt like this !
(but ignore me, for other soldering i can do properly without no problem, my main help , just for the two cables to the tip cpu caps , help pls.)

 

[QuiTim]

hello guys...

so im about to resolder back my mosfet, now im using enameled 0.2mm

Spoiler: enameled 0.2mm

View attachment 370759
View attachment 370760

but i got problem.

i cant melt the solder lead to the tip enameled
i wanted the lead solder melt and stick properly to the enameled point
mmmn.... any tips how to melt it ?
im using 300-350 heat

Spoiler

View attachment 370770

i follow this video :
SolderJS #135 - The BEST Way to Tin Enameled Wire

but still wont sticky

help
thx


(the purpose , so i can easily solder it to the cpu caps resistor from the mosfet D(drain) to the cpu caps.
View attachment 370769
*this picture, i want my enamaled 0.2mm cable can be soldered melt like this !
(but ignore me, for other soldering i can do properly without no problem, my main help , just for the two cables to the tip cpu caps , help pls.)

You can scratch the insulation off the wire and then apply flux and solder.
You can create a small ball of melted solder on top if the iron and then put the wire in it and hold it for a couple of seconds until the insulation melts. Use temp above 350 for this. Also the ball of solder needs to be "wet" from flux because if the flux has already burned off then it will be much more difficult so you have to be quick about it.

 

[Phantomas77]

JLC and Mouser order just came in, should be a fun weekend. View attachment 370720

Fly high, Picofly!

Looking forward to those assembly pics

 

[DesDeux]

Tried to install picofly, but got blue then pink (purple) light (and on switch got 2101-0001 error code). What could be causing this?

Also, i've used 0.1mm enamel cable for data lines, would it be better or worse if i solder two of that cables on each data line?

 

[nico77]

You can scratch the insulation off the wire and then apply flux and solder.
You can create a small ball of melted solder on top if the iron and then put the wire in it and hold it for a couple of seconds until the insulation melts. Use temp above 350 for this. Also the ball of solder needs to be "wet" from flux because if the flux has already burned off then it will be much more difficult so you have to be quick about it.

if soldering succeed melt to the point(*when the insulation off), is it gonna fall off again ? the solder lead? or gonna sticky good ?

 

[Mgt]

Ok, i understand.
But why microSD after install pico not working?

If your sd cards don't work, you may have done some damage somewhere or directly your card slot is not working correctly.

Post automatically merged: May 11, 2023

Can everyone say me How much Ohm here are at 3,3v loose mine

value of a capacitor from 1uf to 2.2 uf 6.3v size 0402

 

[Adran_Marit]

Just got an update from seller of RP2040Tiny "thanks for your order, but sorry to tell you that RP2040-Tiny-Kit has small quality problem, factory has recalled the products and reproduce. it need about another 1 month."
And now my wait begins...

Post automatically merged: May 11, 2023

From the guide: "might be caused by not cleaned flux, bad soldering, lack of resistors, too long wires or too thin wires"
Had the same situation 3 days ago (on V1 unpatched switch). One additional 47R resistor on dat0 line solved the problem.
Maybe it was the wire (38awg single core) but I was too lazy to swap the wire so I tried the resistor first and it worked.

Small quality problem? translation; we misread the guide and are fixing these to have the correct resistors

Sheet metal?
Now I'm curious

more or less thin sheets of metal, like no more than Id say half a mm thick

 

[789-Benny]

Take it to a professional

Again, just answer his question. It will make him learn.

 

[lightninjay]

Again, just answer his question. It will make him learn.

Just as he is free to ask a question, we are free to answer it as we wish. If an answer involves telling someone to take it to a professional, it may not be the answer the person wanted to hear, but it is still an answer.

 

[RiotRetroGaming]

hello guys...

so im about to resolder back my mosfet, now im using enameled 0.2mm

Spoiler: enameled 0.2mm

View attachment 370759
View attachment 370760

but i got problem.

i cant melt the solder lead to the tip enameled
i wanted the lead solder melt and stick properly to the enameled point
mmmn.... any tips how to melt it ?
im using 300-350 heat

Spoiler

View attachment 370770

i follow this video :
SolderJS #135 - The BEST Way to Tin Enameled Wire

but still wont sticky

help
thx


(the purpose , so i can easily solder it to the cpu caps resistor from the mosfet D(drain) to the cpu caps.
View attachment 370769
*this picture, i want my enamaled 0.2mm cable can be soldered melt like this !
(but ignore me, for other soldering i can do properly without no problem, my main help , just for the two cables to the tip cpu caps , help pls.)

I set mine to 480c to tin all my ends

Post automatically merged: May 11, 2023

Same place just don't cut the shield and route the wires through top left corner

Post automatically merged: May 11, 2023

I think this info is worth including in the next Definitive Guide update (with addition of the comment from @d.b)

This looks similar to one of mine I did ages ago. I used scissors too.
I love the yellow kapton tape behind my clear case