thanks, that method worked!press down both RUN and BOOT and then release only RUN
thanks, that method worked!press down both RUN and BOOT and then release only RUN
I bet you watch a video is not rp2040 based modchip. The area you label is for 3.3v from old hwfly or elder mochip,where rp2040 uses different 3.3v source from motherboard.Hello! I got this modchip (i assume it's a RP2040 HWfly clone) off AliExpress. Is there anything to consider with it? In particular, there's no soldering point at the marked spot, which is different to videos I've seen.
plug into pc while holding BOOT. it will pop on. drag the firmware you want into folder the folder. Thats allI assume this is Picofly Rp2040 variant? If yes, how do we flash this thing to install new firmware?View attachment 416925
I don't think it should matter.Hello! I got this modchip (i assume it's a RP2040 HWfly clone) off AliExpress. Is there anything to consider with it? In particular, there's no soldering point at the marked spot, which is different to videos I've seen.
Is one quick green flash okay? Or do i need to bridge it to get the red flash still?plug into pc while holding BOOT. it will pop on. drag the firmware you want into folder the folder. Thats all
A downside of that method is not having a pull-down resistor for the mosfet gates. If the Picofly connection fails (for any reason: a severed wire, a short, malfunction, user intervention...), the mosfet could keep dumping power into that poor cap, until something burns.Also dont forget to give front mosfet mounting a try ( 28/30 awg wire for mosfet to cap). Once you go black, you can never go back. who has time to open apu cage,clean all that mess, solder those sh*ts down, be carefull not to bridge, and so on and so forth. Just barabing baraboom, tin the mosfet, solder 2 wires that go to cap. put mosfet on board, solder the wires from mosfet to cap. solder 0.1mm enammeled wire to mosfet for picofly,cover it in solder mask to keep it secured and you re DONEEE. haleluia.
I also have the rpi2040 which makes a blue LED and 3 yellow LEDs, 3 yellow and 3 yellow but I haven't installed it yet, I don't know if it's normalI am getting blue flashing light on pico and then goes 3 times yellow then boots OFW. It glitches sometimes but its not consistent. I've looked over all the connections and they seem solid. Any suggestions? Bad pico board?
This is my third install.
EDIT: Now its glitching but it takes a while, ive always done double resistors. Should i try single resistors?
have you looked at the documentation before doing the install?. the lights can be used to diagnose the problem....I also have the rpi2040 which makes a blue LED and 3 yellow LEDs, 3 yellow and 3 yellow but I haven't installed it yet, I don't know if it's normal
HM. Educate me. The mosfet gates are normally opened. They only close and let current pass through when voltage is applyed from the pico. The current bypasses the cap through the mosfet and goest into other places,stalling the proccesor.A downside of that method is not having a pull-down resistor for the mosfet gates. If the Picofly connection fails (for any reason: a severed wire, a short, malfunction, user intervention...), the mosfet could keep dumping power into that poor cap, until something burns.
A pulldown resistor added right next to the mosfet (to not depend on the wiring) is safer. Most flex APU cables already have such resistor in place.
it assume you taking about pull down resistor which normally uses 1K ohm or above. 0 ohm resistor would simply makes the gate short to ground and never control the mosfets on CPU you put on.have you looked at the documentation before doing the install?. the lights can be used to diagnose the problem....
to read the error, only look for the yellow light. its going to give you 3 sequences . aka its going to give out error,pause, then error again, pause , then error again before shutting down the rp2040
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HM. Educate me. The mosfet gates are normally opened. They only close and let current pass through when voltage is applyed from the pico. The current bypasses the cap through the mosfet and goest into other places,stalling the proccesor.
A severed connection to the picofly command wont make anything bad since the mosfet wont be closed (I have previously powered on boards without problems with only the mosfet installed,without picofly ) right?
Im not sure how a short on picofly will affect the mosfet functionality . From what i know, since we are powering the picofly from the nintendo board, if there is a short on the picofly (therefore also putting a short on the nintendo board), it wont attempt to boot (the nintendo board) aka no voltage on the proccesor/cap? Im asking.
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@abal1000x can i do this and have same effect like the flex apu?View attachment 420165
Or it needs to be like this? (second picture is similar to flex, but hard to replicate in real life )
View attachment 420167
Also what resistor should i get? I found a 0603(0ohms) with a power rating of 0.1W . is this the right one?
HM. Educate me. The mosfet gates are normally opened. They only close and let current pass through when voltage is applyed from the pico. The current bypasses the cap through the mosfet and goest into other places,stalling the proccesor.
A severed connection to the picofly command wont make anything bad since the mosfet wont be closed (I have previously powered on boards without problems with only the mosfet installed,without picofly ) right?
Im not sure how a short on picofly will affect the mosfet functionality . From what i know, since we are powering the picofly from the nintendo board, if there is a short on the picofly (therefore also putting a short on the nintendo board), it wont attempt to boot (the nintendo board) aka no voltage on the proccesor/cap? Im asking.
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@abal1000x can i do this and have same effect like the flex apu?View attachment 420165
Or it needs to be like this? (second picture is similar to flex, but hard to replicate in real life )
View attachment 420167
Also what resistor should i get? I found a 0603(0ohms) with a power rating of 0.1W . is this the right one?
it assume you taking about pull down resistor which normally uses 1K ohm or above. 0 ohm resistor would simply makes the gate short to ground and never control the mosfets on CPU you put on.
oh ok i was under the impression that was a 0 ohm resistor . i remember v2 flexes have 2 resistors and a 0 ohm resistor.A severed line could leave the mosfet gate "floating" in an unstable state. In that situation, the mosfet should be open, but a short to any other point carrying power (or any stray current picked up by the wire) could cause the mosfet to close. A pulldown resistor prevents that by grounding the gate before it can do any harm.
A 0 Ohm resistor is a short! The Picofly would not be able to overcome it. The pulldown resistor needs to be a higher value, so it doesn't overload the Picofly output pin (I've checked which value is used in V3 flex cables and found 0.5K Ohm, but it has also been discussed here). And it should be placed as close as possible to the mosfet to be safest (second picture but using a 0.5-1K resistor and making the green line as short as possible).
In any case, the pulldown resistor is just a precaution, it's up to each installer to decide if it's worth the effort to add it.
there is a 0 ohm resistor for bridging the 2 mosfet gate together, but this doesnt mean you using 0 ohm resistor to short gate to ground.oh ok i was under the impression that was a 0 ohm resistor . i remember v2 flexes have 2 resistors and a 0 ohm resistor.
There are tutorials about those concepts (like this one) but it might help to think of that resistor as a "spring" that is always pulling on a door. When nobody is holding it open, such a door will tend to close by itself, right?For example,what if the picofly goes bad (shorts itself). Will that affect the picofly command cpu pin? How>? Because that is the only scenario left where its unclear if i would need a resistor
Also i ve looked at the flex ,trying to understand what that resistor does. Is it acting like a fuse?
noMy picofly installed switch lite boots to ofw sometimes(about 1 out of 10 boots) is this normal behavior?