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Mihini/EclipseCon2013 Tutorial
Tutorial
EclipseCon 2013 Tutorial plan.
Goals
Show Mihini
- show key APIs such as logging, sched, airvantage, devicetree, (sms?)...
- show how it's easy to do I/O manipulation and wireless communication
Koneki for Mihini
- show how Lua is easy to edit thanks to LDT tooling
- show EE and remote development for Mihini
Key steps
Installation of Mihini
Participants will compile and install Mihini on the Raspberry Pi based on the instructions available here
Install of ldt
Download ldt from official website or network, install remote feature.
IO code
Show by the speaker for the same reason as in the first step.
Remote run/debug
Log hello on the module.
Interact with the device tree
Write a first application to control the hardware
Wireless code
Upload first data on internet using MQTT and AirVantage
Install application
Show how to install an application using mihini (and airVantage)
Hardware
The main hardware will be a Raspberry Pi connected to an Arduino ; the Arduino itself being connected to several sensors/actuators.
Suggested sensors
Attached to the Modbus-capable Arduino
- LED
- light sensor
- humidity sensor
- temperature sensor
Other?
A LED matrix (managed through another arduino module?)
An LCD screen
Another idea: it can be interesting to allow light spot to be in front of the light sensor, so user can check if their light is on or off.
Bill of materials
| Item | Qty | Total Cost (USD) |
|---|---|---|
| Raspberry Pi | 1x | 40.00 |
| Arduino Uno | 1x | 30.00 |
| Grove kit | 1x | 40.00 |
| Micro USB cable | 1x | ? |
| 4GB SD card | 1x | ? |
| USB 1A power supply | 1x | ? |
| USB A-B cable | 1x | ? |
| Wifi dongle (Netgear WNA1000M-100FRS)* | 1x | 20.00 |
| TOTAL | 130.00 USD |
- this might not be the best option for the US market (sounds look it is way more expensive than in Europe?)
Software
Because we can't provide a raspp for each democamp participant, we need to divide the soft in two parts. The first one will manage the IO and exposes theses data. This software will be develop and installed before the The others application will be the participant app and will use the given exposed value to interact with the IO.
To share data beteween application, it's possible to use the devicetree by storing a part of the tree in RAM.