pHAT Beat - VUmeter Colour Change?

Support
1

Loving the pHAT Beat, on my third one now, for my current project I could do with adjusting the LED colours though, so that instead of going green-amber-red they’re red all the way across, but still go up and down keeping the same VU meter function.

Must be possible, I just can’t find the right way to make the change!

Any ideas gratefully appreciated, thanks.

2

Are you running your own code?
Or maybe one of the examples?
Or the Pirate Radio setup?

3

Just playing an MP3 from the desktop after a full standard installation, all is working absolutely fine, all I want to do is change the colour of the LEDs used in the VU meter.

4

Ok, I have mine setup as the Pirate Radio / Internet Radio.
Not sure this will help but have a look. There is some info on controlling the LEDs.
https://learn.pimoroni.com/tutorial/sandyj/getting-started-with-phat-beat

I would think you’ll have to find the pHat Beat install directory, if it exists. And look for a config file.

5

@Scott posted this in another thread on how to change the VU meter sensitivity. You might have to do something similar, but to a different line in that file. To be honest I don’t understand what it does or how it does it, but it did work.

You can increase the sensitivity on the Phat Beat VU Meter by doing the following:
cd Pimoroni/pivumeter
nano src/devices/phat-beat.c
Change line 88 to:
int bar = (meter_level * (meter_level / 8) / 131071.0f) * (brightness * (NUM_PIXELS/2));
Recompile the library:
sudo make
sudo make install
Sudo reboot

Now your VU meter is more sensitive! Tweak the values to your liking.