CYD Galagino rear panel with 20mm speaker (optional volume)

Modification of the rear panel to add speaker grill and recess for a 20mm speaker.
There is already a model for a base with no speaker grill. Use that and this to relocate the speaker to the rear of the cabinet to improve sound.

There's a bit of clearance so any cheap Chinesium 20mm speaker should fit and be fixed in place with hotglue.

Making the resistor changes to the CYD is STRONGLY recommended to regain audio quality! https://github.com/hexeguitar/ESP32_TFT_PIO#audio-amp-gain-mod

Second version has the same speaker grill and recess mod, but also adds a volume control. This is going to be very specific to your potentiometer, so download and measure. The one I use has a 5mm diameter shaft, the locating key is 8mm from the centre of the shaft. the threaded section is 6mm long and 7mm diameter with a 10mm securing nut. The knob which recesses has a 15mm external flange.

Supports will be needed for the version with the volume control, but as the interface surfaces are hidden under the knob, this doesn't impact appearance at all.

You will need a thin walled socket to tighten the 10mm nut. I just printed one.

Photos are of the version with the volume control, as that's what I need for my project. The version without simply has the grill, leaving you free to add your own recess for volume control or whatever you like.

You will obviously need to print the rest of the original model. This is only a replacement for the rear panel.