Should this work with a 3xRCA to AV cable? Getting video noise, no sound about esp_8_bit HOT 8 OPEN

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@cziter15, I read here the following comment:

If you're having the same problem as me the capacitor goes on the negative of the audio line, not T'd off the positive like it seems to newbs.

That's why I soldered the audio L/R outter/negative/shielding through the capacitor to ground. So should I solder the capacitor to the positive then?

What about the resistor? The scheme lists a 1k resistor in the audio line. Should I remove it? I'm a little confused about the 750 ohm impedance matching.

    -----------
    |         |
    |      25 |------------------> video out
    |         |
    |      18 |---/\/\/\/----|---> audio out
    |         |     1k       |
    |         |             ---
    |  ESP32  |             --- 10nf
    |         |              |
    |         |              v gnd
    |         |
    |         |     3.3v <--+-+   IR Receiver
    |         |      gnd <--|  )  TSOP4838 etc.
    |       0 |-------------+-+   (Optional)
    -----------

This is how I have it:

Video positive/yellow cable -----------------------------------PIN 25
Video negative/outter cable ---------------------------------- GND
Audio L/R positives (red & white) -------- 1k resistor --------PIN 26
Audio L/R negatives/outter ---------- 10 nF capacitor ---------GND

from esp_8_bit.

Verify that you are using the correct connections for your device on the other end.
TRRS is far from being standardized:
https://en.wikipedia.org/wiki/Phone_connector_(audio)#TRRS_standards

from esp_8_bit.

Verify that you are using the correct connections for your device on the other end.

Interesting. How should I do that? The device is a cheap projector that has no instructions manual. Concerning the connections I listed on my last message, do you feel they're correct?

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I've tried with another ESP32 on a breadboard. I've tried plugging pin 25 to every of the 3 different lines and none seems to output a video signal. Surely I must be doing something very wrong.

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I can confirm that Bitluni CompositeVideo repository works with the actual cabling, and I can see the composite video demo. Still, esp_8_bit does not output video nor audio yet.

Edit: Corn64 fork also seems to output both video and audio (resoldering was needed due to TRRS), but as soon as my DualShock4 is detected in pairing mode, the program crashes.

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try changing the board type. I had video noise until I switched board type in the arduino IDE.

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You can not use pin 26 for audio!
In fact both pin 25 & 26 outputs video and can't be changed to anything else.
You'll need to use some other pin like the one suggested (pin 18 or reconfigure it to some other), the reason being that the second DAC can not be used when running the APLL at these frequencies and another scheme is used for audio (PWM modulator) and thus it will not be compatible with bitlunis wiring.

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