Greetings, New Volumio user here.
I am building a little Raspberry Pi Volumio device in a vintage radio as a Christmas present for my 50s rock loving dad.
I’m progressing well, tested with HDMI and headphone jack no problem.
Problem though when adding the Inno-Maker AMP HAT.
AMP HAT: Inno-Maker Raspberry Pi HiFi AMP HAT 25W Class-D Power Amplifier TAS5713 Expansion Board Audio Module for Raspberry Pi 3 B+ Pi Zero Nichicon Capacitor
I have set up the I2C with the HiBerry AMP driver. That is per the manufacturer’s instructions in online manual.
I am receiving an error message on the HDMI video output
[29.672306] Under-voltage detected! (0x00050005)
[49.392281] Under-voltage detected! (0x00050005)
Now, obvious problem you would diagnose is that the power supply is underpowered. However, I have both a new 12V - 5a power supply, and an existing 12V - 5a power supply that’s usually driving my NAS. No, I am not powering the Raspberry Pi’s mini-usb, the Pi is getting power from the HAT.
Now, when I play a song, it seems to play fine, although the volume below level 35 seems like mute. But, 100 is quite a blast; see now that’s an exaggeration because I didn’t even take it above 75 because, wow, yeah it’s quite loud.
Speaker by the way is a brand new 15W (Max 30W) 2 channel 4 ohm dash speaker.
a) Is it possible that the HDMI output is what’s driving the need for more power? Obviously eventually I’ll have it be headless; actually it was quite by accident that I had the HDMI plugged in because I was testing the sound through the HDMI (at that time the HAT AMP was not linked to the Pi)
b) I still want to add on a volume control and switch, as well as attach the small light that lights the old am/fm circular display; should I worry about this undervoltage in trying to add on these functions.
c) What are the characteristics or symptoms of the system I might see due to this under voltage?
Thanks for any help