... works & the speakers work whenever I unplug the headphone jack. Headphone jack: PJ-325 headphonejack.PNG Volume wheel: B103 B103.jpg Amplifier: PAM8403 green amplifier (1).PNG The wiring is: Low pass filter - Headphone Jack - Amplifier - Speaker. I currently have the volume wheel connected between ...

Hi guys, Currently mid-build for my Game Boy Zero and have run into audio issues... I am using PAM8403 for my amp and have made a filter to try clean up the sound but the sound doesn't really change with the filter or without. This is the filter i am using https://learn.adafruit.com/assets/35685. ...

.

this is tinkerboy's board with a built-in arduino for controls and a usb hub. you should just connect the usb d+/- on this to get the controls to work.

https://www.tinkerboy.xyz/product/game- ... audio-amp/

.

... Zero. - PowerBoost - Simple Game Boy Zero pcb board - GPIO Controller inputs https://www.tinkerboy.xyz/wp-content/uploads/2018/01/IMG_0702.jpg - PAM8403 - Audio amp https://www.tinkerboy.xyz/wp-content/uploads/2018/01/IMG_0722.jpg - headphone jack https://www.tinkerboy.xyz/wp-content/uploads/2018/02/IMG_0684.jpg ...

I just use the adafruit pam8403 ones (blue ones). Still not great, but I found them to be better than the cheapo green amps. But lately I've been using i2s. Little pricey. But quality is amazingly better. https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp ...

I just use the adafruit pam8403 ones (blue ones). Still not great, but I found them to be better than the cheapo green amps. But lately I've been using i2s. Little pricey. But quality is amazingly better.

https://learn.adafruit.com/adafruit-max ... d-mono-amp

... A low pass filter will attenuate these frequencies. source: https://www.raspberrypi.org/forums/viewtopic.php?t=158264 Here's an explanation on the pam8403 PAM8403(H) has 2 amplifier stages inside. Each one is bridge type, in order to apply the maximum (rail to rail) voltage to the loudspeaker. ...

(thats a aio board, not a common ground)

You bridge outputs? from the amp?
I dont think pam8403 amp likes bridged outputs.. i even think it would probablt fry it after some time..

Also check continuity of the audio inputs of the pam8403 amp like this: And the power lines:

... to the amp. It's highly possible that one of the two pins is not connecting to the amp but you should still get audio from the speaker. 2. PAM8403 Amp - It's also possible but highly unlikely that both of the left and right audio inputs of the amp have lost the connection to the pcb board. ...