Hacking using an hwfly oled v3 on switch lite

algolsaturn · Dec 22, 2022

Hi all,

I have got the hwfly v3 oled chip and I was wondering how I could use it on a switch lite. I do not have the original ribbon cables for it so I was thinking about just soldering jumper wires. However I have not been able to track down a pinout/schematic in order to identify each solder point on the modchip. I don't really care about this being a messy job as I've got a switch lite laying around and I've got this spare older chip from when I used to mod OLED switches. I've attached a photo of the modchip, I am pretty sure it is a v3, but just to make sure I've attached it.

Many Thanks

Hayato213 · Dec 22, 2022

OLED chip are meant for OLED switch, you should have gotten a HWFLY lite instead.

algolsaturn · Dec 22, 2022

Hayato213 said:
OLED chip are meant for OLED switch, you should have gotten a HWFLY lite instead.

Thanks for the reply, I am aware of that. I just had it the old modchip laying around and was wondering it was possible to solder it to a switch lite. It appears that other people have been able to use OLED modchips on switch lite however those are the V4 variants which you can flash. I don't think its possible to flash this v3, so that's the biggest problem that I foresee. The glitch voltages could be different as well, remember with the early oled variants that it would send the wrong voltage has the potential to damage the switch over time.

Post automatically merged: Dec 22, 2022

Either way, I guess I could wait until a new modchip is out, I don't really think I'll bother going out to purchase a hwfly switch lite modchip as they are still quite expensive at the moment. I might just wait to see what's going on with this new modchip on the way that uses an RP2040 which looks promising, but of course we are waiting to see if the dev will actually release the firmware.

binkinator · Dec 22, 2022

https://github.com/sthetix/DIAGRAM

https://github.com/sthetix/DIAGRAM/blob/main/OLED on LITE.png

I don’t see the pin outs for that old chip though…kinda flying blind.

Post automatically merged: Dec 22, 2022

https://wololo.net/2022/02/17/how-t...hed-vs-patched-trying-to-clear-it-up-for-you/

Modzvilleusa says it will work but it’s the tough way to go, but hey, a chip is a chip. If we can find the damn pin out it would be great!

Post automatically merged: Dec 22, 2022

Dude…you’re in luck.

@randy_w did one of these (and he knows his shit.)

https://gbatemp.net/threads/my-first-oled-hwfly-installation-and-a-few-thoughts.609301/

algolsaturn · Dec 22, 2022

Yep I think I'l give it a miss, thanks for the people that replied. The main concerns I have is that I am unable to manually solder the CPU caps on the SOC, as that cpu ribbon cable seems to be required, that cable has components on it on the end, looks like some mosfets which seem to be important. If I were to buy a new CPU cable for that, the OLED one won't work as the CPU caps are in slightly different positions so it won't fit. If I get a switch lite cable, it still may not work as the actual ribbon cable connector could be different. Then even if I were to resolve that, then its likely that it won't even glitch it, given the fact that its designed to glitch the OLED switch, there are slight variations on the glitching process with the OLED ones, which is partly why they had to adapt the firmware of the non-oled modchips to the oled ones, some of the original OLED chips had an issue where it would the wrong amount of voltage, I think 5V instead of 3.3V as it used older code for the switch lite or erista models.

Hopefully we get some more options soon with new modchips so we don't need to rely on these overpriced modchips with sparse hardware information.

nerirififi · Feb 8, 2023

Echo2124 said:
Yep I think I'l give it a miss, thanks for the people that replied. The main concerns I have is that I am unable to manually solder the CPU caps on the SOC, as that cpu ribbon cable seems to be required, that cable has components on it on the end, looks like some mosfets which seem to be important. If I were to buy a new CPU cable for that, the OLED one won't work as the CPU caps are in slightly different positions so it won't fit. If I get a switch lite cable, it still may not work as the actual ribbon cable connector could be different. Then even if I were to resolve that, then its likely that it won't even glitch it, given the fact that its designed to glitch the OLED switch, there are slight variations on the glitching process with the OLED ones, which is partly why they had to adapt the firmware of the non-oled modchips to the oled ones, some of the original OLED chips had an issue where it would the wrong amount of voltage, I think 5V instead of 3.3V as it used older code for the switch lite or erista models.

Hopefully we get some more options soon with new modchips so we don't need to rely on these overpriced modchips with sparse hardware information.

Cable work, it s for mariko soc, I am sure at 100%

Hacking using an hwfly oled v3 on switch lite

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