Hacking Hardware Picofly - a HWFLY switch modchip

chaoticoz

Member
Newcomer
Joined
Dec 4, 2016
Messages
14
Trophies
0
Age
35
XP
89
Country
Gambia, The
Without microscope, i strongly recommend using flex then manually soldering the mosfet.
Not worth the risk.
I've already soldered the APU pins as well.
I just hope it'll work :)
 

Attachments

  • IMG_1250.jpeg
    IMG_1250.jpeg
    954.2 KB · Views: 41

Dee87

Well-Known Member
Member
Joined
Mar 19, 2023
Messages
1,139
Trophies
1
XP
1,571
Country
Germany
I've already soldered the APU pins as well.
I just hope it'll work :)
I would resolder the bottom apu pin its pretty close to the second one.

Plus the pins don't really seem properly connected , maybe its the picture but make sure u have good contact.

The coating should be of completely and not on only one side, an solder should be around the whole uncoted enameled wire
 
  • Like
Reactions: QuiTim

deeps

Well-Known Member
Member
Joined
Jul 3, 2007
Messages
419
Trophies
1
XP
1,192
Country
How is this looking? First time soldering at that scale.
I don't have a microscope or anything, just my phone.
Still waiting for my mosfets, they'll arrive today.

What is community opinion on one vs two mosfets?

looks fine. community opinion is that one mosfet delivers enough amperage by far, but it's preferable to connect it to both capacitors even though connecting to just one mostly works fine.
 

chaoticoz

Member
Newcomer
Joined
Dec 4, 2016
Messages
14
Trophies
0
Age
35
XP
89
Country
Gambia, The
I would resolder the bottom apu pin its pretty close to the second one.

Plus the pins don't really seem properly connected , maybe its the picture but make sure u have good contact.

The coating should be of completely and not on only one side, an solder should be around the whole uncoted enameled wire
Thanks for the hint, I moved the wire a bit, so it avoids the second cap.
I'm really not sure about connection quality. I have a hard time getting solder to stick on the wires.
 

Attachments

  • IMG_1252 - Kopie.jpeg
    IMG_1252 - Kopie.jpeg
    160.7 KB · Views: 32

Dee87

Well-Known Member
Member
Joined
Mar 19, 2023
Messages
1,139
Trophies
1
XP
1,571
Country
Germany
Thanks for the hint, I moved the wire a bit, so it avoids the second cap.
I'm really not sure about connection quality. I have a hard time getting solder to stick on the wires.
Seems better the best way to get the coating off of the enameled wire is when u set ur soldering iron to 320+ ad a nice thick solderblob to ur iron and hold the wire in the solder blob on the iron for a few sec just only as deep as u want the solder on the wire otherwise just cut a peace of if u have to much uncoated.

Only uncoat the wie as much as u need to make a clean connection without leaving to much uncoated wire sticking out of the solder pad u want so solder to (make the chances to short with other solder pads)
 

FreeLander

Well-Known Member
Member
Joined
Apr 6, 2023
Messages
350
Trophies
0
Age
35
XP
465
Country
United States
What do you mean by pull down resistor? The ones attached to the RP2040 in the guide?
EDIT: just found it. >1k resistor from gate to ground.
Hello, where does it say the 1k resistor? Couldn't find it in the v6.1 guide


Do you guys think the SCL wires could fix the *== error?
 

abal1000x

Well-Known Member
Member
Joined
Jun 5, 2022
Messages
1,041
Trophies
0
XP
1,321
Country
Gaza Strip
Hello, where does it say the 1k resistor? Couldn't find it in the v6.1 guide


Do you guys think the SCL wires could fix the *== error?
*== No eMMC CMD1 request (poor wiring, or dead CPU)

No it doesn't.
SDA SCL use if the normal glitch doesn't work.

Those error is before glitch stage. It still on the EMMC stage.
 

abal1000x

Well-Known Member
Member
Joined
Jun 5, 2022
Messages
1,041
Trophies
0
XP
1,321
Country
Gaza Strip
Thanks. Assuming CLK trace is cut off. I'm going to get this error, right?
Unfortunately highly probable that pico doesn't receive the CLK.

The error means theres no emmc activity detected by the pico.

If it is CMD, DAT0 whose disconnected, the firmware will detect it, and the error code will be different. So if the CMD, Dat0 connected, then theres left the CLK.

Can you go to the OFW after pico failed with those error?
Post automatically merged:

@rehius
I read from the "Led Indication" that there is CLK error code:
== CLK is not connected
But couldn't find the code in the firmware which detect it.
Am i missing something?
 
Last edited by abal1000x,

FreeLander

Well-Known Member
Member
Joined
Apr 6, 2023
Messages
350
Trophies
0
Age
35
XP
465
Country
United States
Unfortunately highly probable that pico doesn't receive the CLK.

The error means theres no emmc activity detected by the pico.

If it is CMD, DAT0 whose disconnected, the firmware will detect it, and the error code will be different. So if the CMD, Dat0 connected, then theres left the CLK.

Can you go to the OFW after pico failed with those error?
Post automatically merged:

@rehius
I read from the "Led Indication" that there is CLK error code:
== CLK is not connected
But couldn't find the code in the firmware which detect it.
Am i missing something?
Thanks. No, I get the error with a black screen.
I'm thinking if I got that error again, I'm going to jump wire from the eMMC CLK point to the trace just to get to OFW. Makes sense?
 

abal1000x

Well-Known Member
Member
Joined
Jun 5, 2022
Messages
1,041
Trophies
0
XP
1,321
Country
Gaza Strip
Thanks. No, I get the error with a black screen.
I'm thinking if I got that error again, I'm going to jump wire from the eMMC CLK point to the trace just to get to OFW. Makes sense?
Yes make a sense.

The no activity might occured because it is not connected to the cpu.
 

FreeLander

Well-Known Member
Member
Joined
Apr 6, 2023
Messages
350
Trophies
0
Age
35
XP
465
Country
United States
Yes make a sense.

The no activity might occured because it is not connected to the cpu.
I've never had such an issue with an OLED, I got a blue screen before, but not black. reason being; This was my first OLED install with my new station,SUGON A9, I should have practiced on a donor board to get an idea of its heating capacity.
 

Takezo-San

Well-Known Member
Member
Joined
May 3, 2023
Messages
261
Trophies
0
Age
39
XP
347
Country
Seychelles
Need a second opinion. Are these the dog shite "Dat0" adaptors right!? Just got these today.....
Post automatically merged:

I've never had such an issue with an OLED, I got a blue screen before, but not black. reason being; This was my first OLED install with my new station,SUGON A9, I should have practiced on a donor board to get an idea of its heating capacity.
Thought this might help if at all:



(I don't understand word of it BTW, im not french)
 

Attachments

  • 20230603_142212.jpg
    20230603_142212.jpg
    599.9 KB · Views: 21
  • 20230603_142155.jpg
    20230603_142155.jpg
    664.3 KB · Views: 26
  • Like
Reactions: Danook28

QuiTim

Well-Known Member
Member
Joined
Mar 30, 2023
Messages
754
Trophies
0
XP
1,138
Country
Albania
Need a second opinion. Are these the dog shite ones right!? Just got these today.....
Unfurtunately yes, but i think you can still use them if you want. Use @abal1000x method, cut the left part flush and the right part of the pin should fit between the dat0 and the 2nd ball (nc). Maybe you need to move the whole adapter slightly (0.05-0.01) to the right.
 
  • Like
Reactions: Takezo-San

Takezo-San

Well-Known Member
Member
Joined
May 3, 2023
Messages
261
Trophies
0
Age
39
XP
347
Country
Seychelles
Unfurtunately yes, but i think you can still use them if you want. Use @abal1000x method, cut the left part flush and the right part of the pin should fit between the dat0 and the 2nd ball (nc). Maybe you need to move the whole adapter slightly (0.05-0.01) to the right.
Nah, going to complain and then order some stencils for emmc. That's the last time I order this type of crap. Not risking good hardware with this type of flimsy crap.
 

chaoticoz

Member
Newcomer
Joined
Dec 4, 2016
Messages
14
Trophies
0
Age
35
XP
89
Country
Gambia, The
Thanks for the hint, I moved the wire a bit, so it avoids the second cap.
I'm really not sure about connection quality. I have a hard time getting solder to stick on the wires.
Holy crap it works!
I almost gave up soldering the mosfet! Damn they're tiny!
 

Attachments

  • IMG_1270 - Kopie.JPG
    IMG_1270 - Kopie.JPG
    921.5 KB · Views: 33

fox87

Member
Newcomer
Joined
Apr 27, 2023
Messages
19
Trophies
0
Age
123
XP
100
Country
Denmark
What do you mean by pull down resistor? The ones attached to the RP2040 in the guide?
EDIT: just found it. >1k resistor from gate to ground.

That sounds like some really difficult micro soldering job. Is it really necessary? What size of resistor would one use for that, 0402?
 

Site & Scene News

Popular threads in this forum

General chit-chat
Help Users
  • No one is chatting at the moment.
    K3Nv2 @ K3Nv2: Sorry for accidentally bending over