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Created by serisman on 2019-04-30 05:56:23

Description: This is a bare minimum DS18B20 based temperature sensor node.

It is intended to be as small as possible, with really long battery life. The ATmega328P is powered directly from the battery, but the nRF24L01+ and DS18B20(s) are powered through an efficient XC6206 3.3v LDO regulator (U2). The battery can be 3x AA/AAA, or a LiPo/Li-ion cell (i.e. 18650).

This uses the SMD version of the nRF24L01+ module.

All resistors/capacitors are 0805 sized with the following values:

  • R1 - 4.7kOhm
  • C1,C2 - 4.7uF - 10uF
  • C3,C4 - 100nF

The ATmega328P MCU needs to be programmed before being soldered, so the MYSBootloader is recommended.

License: CC-BY 4.0
Tags: mysensors

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Board Images:

Top View - Complete Board

Top View - Complete Board

This is what your finished board will look like from the top.

Bottom View - Complete Board

Bottom View - Complete Board

This is what your finished board will look like from the bottom.

Board Outline

Board Outline

This shows the outline of your board, it will be cut to this shape.

Top Copper Layer

Top Copper Layer

This shows where the copper will remain after etching the top of the board.

Bottom Copper Layer

Bottom Copper Layer

This shows where the copper will remain after etching the bottom of the board. (mirrored)

Top Soldermask

Top Soldermask

This shows where soldermask will be applied on the top over the bare copper board.

Bottom Soldermask

Bottom Soldermask

This shows where soldermask will be applied on the bottom over the bare copper board. (mirrored)

Top Silkscreen

Top Silkscreen

This is the white print that will be printed on the top of the board.

Bottom Silkscreen

Bottom Silkscreen

This is the white print that will be printed on the bottom of the board. (mirrored)

Drill Holes

Drill Holes

This shows all the holes that will be drilled in your board.

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