ATtiny412 Pocket Radio PCB Remakes

Stefan Wagner's 2022 ATtiny412 Pocket Radio design with some changes.

Both Versions :

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