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As a reminder, LinkMeter refers to a OpenWrt-compatible device which has a HeaterMeter controller board installed in it.
- HeaterMeter v4.3 - RaspberryPi Model B+, Pi 2, Pi 3, and Zero - referred to as bcm2708/bcm2709/bcm2710 targets. No modification to the Pi is necessary.
- HeaterMeter v4.0, v4.1, v4.2 - RaspberryPi Model A, A+, B, Zero - referred to as bcm2708 target. The composite video RCA jack should be removed. It can be desoldered or just clipped off with wire cutters. As the rPi does not include a case, having one custom 3D printed is recommended. A standard RaspberryPi case will not fit the rPi with the HeaterMeter board mounted on it.
- HeaterMeter v3.0, v3.1, v3.2 - Linksys WRT54GL - referred to as bcm47xx target. Minimal hardware modification is necessary-- most of the modification is to the plastic case to expose the probe/fan connectors, LCD, and buttons.