Description of the Design
This board is small but powerful since all a 1-wire part needs to operate is a single wire (plus a ground).
The devices can be daisy-chained together (actually they are connected in parallel). The first device in a 1-Wire chain needs to have a 4.7K pullup to +5V and this card provides for that option.
- Pair of connectors provided for chaining together 1-wire sensors. That way the cabling can be simple.
- Pinout matches the GVS (Ground, +V, Sensor) order of Arduino Sensor shields but for most uses only the G and S are needed.
- For the first device in a chain, J1 should be left open, R1 should be installed and power brought into the card on the V pin.
- For devices other than the first device in the chain, J1 connector should be jumpered across.
A single 4-40 mounting hole is provided to allow the card to be zip-tied into the location to be monitored. For permanent installation, the single point can be screwed down with a standoff.