Meko is a high audio quality DAP, it has an e-ink screen, a physical spinning wheel, small formfactor, Bluetooth, micro SD slot, transparent case. Its design was inspired by the iPod nano 2. The size of the case is 41x73x14mm

I really miss the era of gadgets, where every device served one specific function, without distraction, like a mp3 player, a camera, a gps navigator, an e reader, etc. With this player I wanted to make something unique

Production files in Releases

The PCB has 6 layers, in the SIG/GND/SIG/GND/GND/SIG stackup.

It is impedance controlled for JLCs default 6 layer PCB stackup, but not many of the lines are impedance controlled, and if they are they are short, so if you must, you can use other stackups.

• main SOC: NRF5340
• DAC/AMP: TAD5212
• PMIC: npm1300
• hall-effect sensor: AS5600-ASOM

Production files in Releases

The case in designed in FreeCAD, which is an Open Source and free CAD program, you will need this program to edit the case.

I recommend you to print this in resin because it requires accurate dimensions for the best result. You can print this on a FDM, but you need to change the tolerance and maybe other parameters in the model.

The firmware is being developed in this repo

The firmware is very WIP!!!! It is written with the zephyr rtos.

If I have time I will try to port rockbox