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Issue Launching Swiss with HDMI Adapter Connected #124

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LazarusQ opened this issue Dec 19, 2024 · 7 comments
Open

Issue Launching Swiss with HDMI Adapter Connected #124

LazarusQ opened this issue Dec 19, 2024 · 7 comments
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installation issue Something isn't working

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@LazarusQ
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Answer some general questions first
Which firmware version are you using? v0.4
Are you using the official Raspberry Pi Pico board? no

Hi, so I've recently modded one of my GameCubes and successfully installed a Pico board using a flex cable. The issue I'm running into, however, is that when I try to boot the GameCube up with a HDMI Adapter connected it boots straight into the generic GameCube boot menu and the LED on the Pico board doesn't light up, but if I disconnect the HDMI Adapter first, power on the GameCube and wait for the LED to turn green on the Pico board before reconnecting the HDMI, it boots successfully into Swiss and I have no issues thereafter. I'm wondering if perhaps this is a power issue and the HDMI is taking priority over the Pico board? Perhaps if I solder the VSYS pin on the Pico and flex cable instead of 3V3 it might fix this issue by supplying enough power for both the board and HDMI Adapter to run together on launch? Any help would be greatly appreciated, I just want to make sure before I resort to trial and error and potentially brick my console.

@LazarusQ LazarusQ added the installation issue Something isn't working label Dec 19, 2024
@webhdx
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webhdx commented Dec 19, 2024

What kind of HDMI adapter do you have?

@LazarusQ
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Thank you for the fast reply! I'm currently using the Bitfunx NGC HDMI Adapter.

@webhdx
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webhdx commented Dec 19, 2024

This is a hardware issue with the HDMI adapter. To mitigate the problem you should power Pico from 5V but that would be impossible with a flex cable.

@LazarusQ
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Ah, I see. Are there any alternative adapters that you know of that would work with the 3.3V?

@roadkillusa
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I have used this HDMI adapter with no issue on 3.3-volt Pico boot hookup
https://www.amazon.com/gp/product/B083RXFNDD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

@evilgenius31
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evilgenius31 commented Dec 19, 2024

The 3d printed mini-hdmi adapters on aliexpress work perfectly with picoboot!

https://www.aliexpress.us/item/3256804373786187.html

@LazarusQ
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Thank you for the replies everyone! Has anyone here used the Retro+ HDMI Adapter from Blue Retro and know if it works with 3.3V Pico on startup?

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