Temperature Interface

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This is the documentation page for the SPI_LM35 board.

Assembly instructions

Possible Configurations

Option 1: cheap, simple, positive only LM35.

• Install solder jumper
• don't install diode, capacitor, resistors.

Option 2: LM35 with negative temperatures.

• install diode,
• install pullup resistor? 50k
• install pulldown resistor 15k.
• Optional capacitor 100n.
• do not install solder jumper.

Option 3: thermocouple.

• install diode,
• install pullup.
• do not install pulldown.
• do not install solder jumper.

Diodes: PNB7000 or BAS31S or BAV99. should all work. Others should work too. The idea is that at 0.1mA forward current the voltage drop is about 1V.

Additional software

Related projects

• [[1]]

Changelog

1.0

• Initial public release