A Raspberry Pi adaptor board for the HopeRF RFM95W and comptible modules.
v1.1 No functional changes. Board length reduced to 30mm, with some minor component rearrangements, to match the width of a Raspberry Pi Zero.
v1.2 No functional changes. Board length trimmed to allow it to be mounted immediately adjacent to another board on a standard 100 mil grid and the silkscreen modified to label the pins according to their RFM95W connections rather than their Raspberry Pi connections, these changes to allow the board to be more readily adapted to other, non-Raspberry Pi applications.
This iot_battery_sensor board v2 is intended as piggyback/hat for the iot_lora board.
Power alternatives are: CR2032/2xAAA controlled by TPS61291, TPL5111 and/or TPS22860.
The booster (TPS22860) can be bypassed.
1 x 10uF
1 x 3,3uH
1 x TPS61291
1 x 22uF
1 x TPS22860
3 x 0.1uF
1 x TPL5111
1 x 56K
1 x 10K
2 x 4K7
2 x pin header 1x1
2 x pin header 1x2
1 x pin header 1x4
1 x pin header 2x7
1 x AAA box (€0.57)
ATTENTION: Added to version V1.1 are connections for the sensors CCS811 and MAX44009.
ATTENTION:The new board (v.2) is tested and works fine.License: CC-BY 4.0