Squeezeboxen Case V2

I had delayed uploading these after being stiffed on a commission for a SqueezeAmp version and feeling quite deflated about it. These are tuned for ABS due to the potential for heat creep with PLA. Print in other materials at your own risk. If you do then you may need to compensate for any difference in shrinkage.

The feet are TPU 95. Please remember to use a debonding agent (school glue or 3DLAC) on your print sheet when printing TPU otherwise you risk ripping the PEI layer off.

The software is Squeezelite-ESP32 and can be flashed onto the ESP32 here. There are some configuration instructions here. Essentially, on first boot, it will create a wifi hotspot that you can connect to and set the wifi password for your home network etc. Then it is possible to navigate to it's configuration page at it's IP address.

I have attached a config file for the PCM5102 version. Unzip it and upload it via the NVS editor. To show this go to the credits tab and select “show NVS editor”. Use at your own risk.

Screws are mostly M3 and either BHCS or SHCS, mostly 6 - 12mm long. 4 square M3 nuts are also needed for the tray - these are a tight friction fit to make mounting inside the case easier. The display is held in place by M2 x 6mm or 8mm but be careful when tightening as too much will cause the front to stress at the tip, which creates a region of paler material.

I have not included the FreeCAD files this time but instead have supplied the step files. Hopefully the names are self explanatory.

The display is a 3.12" SSD1322 from Aliexpress.

There are 2 DAC choices: The PCM5102 and the ES9018K2M. The rear panel for the former has an optical out slot for a DLT1150 transmitter, while the latter does not. Note that the transmitter must have a 0.1uF capacitor soldered to it, which I used some Veroboard for - see the photo. The ES9018K2M was an absolute pig to get working but the quality is very much worth it. I cannot give any help here though as the board is certainly a knock-off.

The ESP32 WROVER module is mounted on an expansion board.

The IR sensor is a TSOP38238.

There is also a USB power supply socket for a 5V 3A power supply such as the official Raspberry Pi version, and a cable to more easily power the ESP32 DEV board. The DEV board has USB C and micro USB. I did manage to backpower the DEV board via the expansion board pins but using the cable is safer.

I use M3 x 6mm SHCS as power supply bus bars and terminate the cables with ring lugs and some heat shrink sleeving. There are holes for Voron spec heat-set inserts (M3x5x4mm) in the tray for this. The same type of inserts are needed on the two ends of the main shell for the front and back to screw to.

Cables are generally crimped with Dupont style connectors. Feel free to solder if you have the skills and nerves.

The rear panels have multiple parts so that MMUs can be used to create different coloured text. If you don't have an MMU, delete the text parts.