https://github.com/tlinden/buswetter
A tiny weather station for my camper van
https://github.com/tlinden/buswetter
Last synced: about 2 months ago
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A tiny weather station for my camper van
- Host: GitHub
- URL: https://github.com/tlinden/buswetter
- Owner: TLINDEN
- License: gpl-3.0
- Created: 2020-03-15T14:32:15.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2020-04-25T18:14:47.000Z (about 6 years ago)
- Last Synced: 2025-01-11T11:41:58.794Z (over 1 year ago)
- Language: Objective-C
- Size: 44.9 KB
- Stars: 0
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Buswetter
A tiny weather station for my camper van
# Main Unit
The main unit consists of an Lolin Wemos D323 board with an ESP32
MCU. It will be powered by an 3.7V LiPo akku. The Wemos board already
contains the recharging and protection circuitry for such akkus. The
Unit will also be connected to the board 12V net via an LDO and some
protective components. However, the board 12V will not be available
all the time, since we turn it only on if I need it or if we are
connected to land mains.
The unit will also contain a simple RF 433Mhz receiver and a real time
clock module. The display will be an ePaper display.
The primary purpose will be to display the time and an icon indicating
a weather forecast for the next few hours.
# Sensor Unit
The sensor unit will be a 1xAA battery powered Attiny841 with an Bosch
BME280 sensor module and a RF 433 Mhz sender module. It will be placed
outside the bus, somewhere below, e.g. inside the reserve wheel or
inside the step below the door.
It will stay in power save sleep mode most of the time, wake up
collect sensor data, battery voltage, and send it to the main unit.
# Build Environments
I do not use any graphical development environments. Everything is
being built using Makefiles.
For the ESP32 I use:
* [Espressiv SDK](https://readthedocs.com/projects/espressif-esp-idf/)
* [Arduino Core for ESP32](https://github.com/espressif/arduino-esp32/)
* [esp-idf-template](https://github.com/espressif/esp-idf-template)
For the Attiny841 I use:
* [Arduino Makefile](https://github.com/sudar/Arduino-Makefile)
* [ATTiny Core](https://github.com/SpenceKonde/ATTinyCore)
* [AvrDude 6.3](https://www.nongnu.org/avrdude/)
* [AVR Libc 2.0.0](http://www.nongnu.org/avr-libc/)
* [GNU binutils for AVR](https://www.gnu.org/software/binutils/)
* [GCC 8.3 for AVR](http://gcc.gnu.org/)
* [see also: install AVR toolchain](https://www.nongnu.org/avr-libc/user-manual/install_tools.html)
# Libraries
I use the following libraries:
* [RF Transmitter](https://github.com/zeitgeist87/RFTransmitter)
* [Tiny BME280 Library](https://github.com/fabyte/Tiny_BME280_Arduino_Library)
* [GxEPD ePaper library](https://github.com/ZinggJM/GxEPD)
* original Arduino libraries: SPE, GFX, Wire
I wrote the following libraries myself:
* [ESP Pin Change Interrupt Handler](mainuinit/ESPPinChangeInterruptHandler/) [ported to ESP32](https://github.com/zeitgeist87/RFReceiver)
* [Attiny841 Sleep Mode](sensor/841sleep.h)
* [Attiny841 read VCC](sensor/841vcc.h)
* [Wire transfer data conversion](sensor/data2wire.h)