About
DobbyESP is my own ESP8266 based IoT application for controlling things.
The name is inspired by Dobby, the houself from Harry Potter: serves behind the scenes, but eventually develops a life on its own.
Requirements
(mostly not yet implemented)
- enable maintainance without physical access
- Robust Wifi configuration
- OTA Updates
- Admin WebInterface
- Basic security
- MQTT for interfacing with OpenHab and crowd control
- OTA logging
- Devices + sensors
- roller blinds / sunblinds
- sprinkler with rain sensor
- anything that can be switched on or off
- Room Heating control & sensing
- make it publicly available, therefore no private acess data must be stored anywhere in version controlled files
Since the ESP8266 is a Wifi-Only system, it doesn't lend itself well to battery powered operation; this is subject to future research
Architecture
Software Stack
- Sming Framework
- [rBoot] (https://github.com/raburton/esp8266 "rBoot on github") for OTA with big flash layout
- spiffs for saving connection information. I originally intended to use the original [xlfe] (https://github.com/xlfe/spiffy "original spiffy") repo; I noticed that the changes needed for Sming are not yet there, so I used [kireefco's fork] (https://github.com/kireevco/spiffy)
- and of course Espressif's SDK, currently V1.2
- Toolchain using chocolatey from sming
Hardware
- ESP-12 and ESP-07: 4MBit Flash, plenty of pins available, including the ADC
- Line powered: off-the-shelf USB Power modules with linear 3.3V controller
- Use Arduino relais modules to switch line: 5V form USB above come in handy, can be controlled with 3,3V from ESP
- as little as possible else
Project Layout
The TopLevel Project contains all dependencies as git submodules, plus DobbyESP's base directory.