Apologies if my previous comment was unclear. I meant anything with higher specs than the Pi Zero 2 W, including the Pi Zero 2 W. So I would suggest using one of the following to complete the projects within the book (also depending on what you plan on doing with the Pi long term):
- Raspberry Pi Zero 2 W (can be found for about $20 with headers already soldered on)
- Raspberry Pi 3 Model B+ (can be found for $40)
- Raspberry Pi 4 Model B (1GB version can be found for $40 and price goes up with more ram)
- Raspberry Pi 5 Model B (1GB version can be found for $45 and price goes up with more ram)
Given that the Livebook distribution of Nerves will consume about 100MB of memory at idle, you have about 400MB of memory left if you go with the cheapest option in the list (that being the Pi Zero 2 W which has 512MB of memory).
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