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Hendrik Langer 7 years ago
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      README.md

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README.md

@ -13,7 +13,7 @@ Features:
* opensensemap.org API
Power consumption:
* ~50mA @ 5V
* ~40mA @ 5V
* (31mA idle + fan + wifi)
CAD files (OpenSCAD) and source code included.
@ -79,18 +79,19 @@ RadiationD-v1.1(CAJOE):
12V power mod with step down converter and voltage divider for voltage measurement:
BAT+ --[FUSE]--+--------------.
\R\ |
\1\ '
>---+--------------------------------- A0
/R/ | . ________________
/2/ === C1 +---| buck converter |---- 5V
BAT- ----------'------+-----------|________________|---- GND
BAT+ --[FUSE]--+------------- Vin+| BUCK CONVERTER |Vout+ -- 5V
\R\ | |
\1\
>---+------------------------------------- A0
/R/ |
/2/ === C1 | |
BAT- ----------'------+------ Vin-| BUCK CONVERTER |Vout- -- GND
Example values: R1=1MΩ, R2=100kΩ, C1=some ceramic capacitor (optional)
measures up to ~30V
## ToDo
* change SDS011 library to a better one. pio id 5422?: https://github.com/lewapek/sds-dust-sensors-arduino-library
* https://tinker.yeoman.com.au/2016/05/29/running-nodemcu-on-a-battery-esp8266-low-power-consumption-revisited/
* deep_sleep (connect D0 to RST)
* https://hackaday.com/2014/10/25/use-a-cheap-pin-diode-as-a-geiger-counter/ (opengeiger.de/elektronik.html)

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