There are two active versions of HeaterMeter, v4.2 (aka 4.2.4) and v4.3 (aka 4.3.2). Both are equivalent in terms of functionality, their only difference is the form factor of the finished device. The largest difference is that v4.2 supports old (original) Raspberry Pi Model B and the v4.3 supports more modern Raspberry Pi.
- Raspberry Pi Model A or B (original), Raspberry Pi Zero, or Raspberry Pi Model A+ (with modification)
- Wider, thinner form factor
- Dimensions: 127mm x 92mm x 29mm (339cm3)
- Single 4-way directional button
- Slightly cheaper due to single PCB design
- Raspberry Pi Model B+, Raspberry Pi Model A+, Raspberry Pi Zero - Fully supported
- Raspberry Pi 2 Model B, Raspberry Pi 3 Model B coming, but not supported in software yet.
- Narrower, fatter form factor
- Dimensions: 102mm x 101mm x 36mm (371cm3)
- Four (4x) discrete buttons
- Slightly more expensive due to dual stacked PCB design