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| author | dakkar <dakkar@thenautilus.net> | 2022-03-27 14:52:40 +0100 |
|---|---|---|
| committer | dakkar <dakkar@thenautilus.net> | 2022-03-27 14:52:40 +0100 |
| commit | 084d8ef95cdbd0e83db57581d477aa44fe5198fd (patch) | |
| tree | c28cc3862796b1a6180cff3cbd493862717b8811 | |
| parent | comment and simplify enclosure (diff) | |
| download | env-sensor-084d8ef95cdbd0e83db57581d477aa44fe5198fd.tar.gz env-sensor-084d8ef95cdbd0e83db57581d477aa44fe5198fd.tar.bz2 env-sensor-084d8ef95cdbd0e83db57581d477aa44fe5198fd.zip | |
update readme
| -rw-r--r-- | README.md | 73 |
1 files changed, 51 insertions, 22 deletions
@@ -1,6 +1,8 @@ # Environmental sensor -## CO₂ +## Components + +### CO₂ sensor https://sensirion.com/products/catalog/SEK-SCD41/ @@ -8,7 +10,12 @@ https://github.com/Sensirion/arduino-i2c-scd4x connector: JST PH 2.0mm 4 pin -## particulate +* 1 SCL +* 2 GND +* 3 VDD +* 4 SDA + +### particulate sensor https://sensirion.com/products/catalog/SPS30/ @@ -16,29 +23,51 @@ https://github.com/Sensirion/arduino-sps connector: JST ZH 1.5mm 5 pin -## controller +* 1 VDD +* 2 SDA +* 3 SCL +* 4 SEL → GND (to select I₂C mode) +* 5 GND + +### main board http://www.lilygo.cn/claprod_view.aspx?TypeId=62&Id=1391&FId=t28:62:28 https://github.com/Xinyuan-LilyGO/LilyGo-T5-ink-series battery: JST 1.25mm 2 pin - -## breadboarding - -μC: -* 21 SDA green -* 22 SCL yellow - -SCD41: -* 1 SCL yellow -* 2 GND black -* 3 VDD white/red -* 4 SDA green - -SPS30: -* 1 VDD black -* 2 SDA red -* 3 SCL white -* 4 SEL yellow → GND -* 5 GND orange + +* 21 SDA +* 22 SCL + +## Software + +Arduino + +[ESP32](https://docs.espressif.com/projects/arduino-esp32/en/latest/) + +[makeEspArduino](https://github.com/plerup/makeEspArduino/) + a bunch +of libraries; `git submodule init && git submodule update` to get +them. + +You'll probably need to adjust some paths in the +[`Makefile`](Makefile), then you can `make flash` to build and flash +the software. + +## Enclosure + +Render with [OpenSCAD](https://openscad.org/), then print. + +I printed on a Prusa MK3S, with PLA, sliced with PrusaSlicer: + +* setting "0.20mm speed" +* variable layer height +* "adaptive cubic" fill pattern +* bottom layer of the enclosure: + * 4 bottom solid layers + * 2 top solid layers +* middle layer of the enclosure: + * 2 bottom solid layers + * 2 top solid layers +* top layer of the enclosure: + * 4 bottom solid layers (which are, in fact, the top layers of the + enclosure, because the top is upside-down) + * 2 top solid layers |