ATtiny412 Pocket Radio PCB Remakes

There is an OLED glass PCB cut out (for back mounting the OLED). Most of the top layer components have been rearranged to allow for the OLED cutout. There is a very small change to front button alignment. Removed the battery connector which unfortunately is too large for either of the PCB redesigns. The speaker is now mounted behind a grill cutout.

The screen cutout is designed for the 0.96 Inch OLED modules I buy from Amazon. Others may not work. There are a lot of OLED manufacturers, and they all seem to design things slightly differently. The ones I use are list here : https://www.amazon.co.uk/gp/product/B08LYL7QFQ/ref=ppx_yo_dt_b_asin_title_o01_s00

Short version

10mm shorter PCB. Needs a square 20mm x 27mm size speaker. This is loud enough, but does lack bass. Part used : https://www.lcsc.com/product-detail/Speakers_FUET-FS2720NS0420-H5-7_C782097.html

Long version

10mm wider PCB. Same 40mm size speakers used in Stefan Wagner's original design.

Concept, circuit, code and PCB design originally by Stefan Wagner 2022

https://oshwlab.com/wagiminator/attiny412-pocket-radio

https://github.com/wagiminator/ATtiny412-PocketRadio

My video on the small speaker PCB : https://www.youtube.com/watch?v=9QQZAy7CJNk

Longer and shorter case STL's (70mm & 90mm) : https://www.thingiverse.com/thing:556898

Both PCBs have been tested and work as expected