Floral Bonnet

This was originally designed for the E-Ale (Embedded Apprentice Linux Engineer) course for linux.conf.au 2019. These were used as teaching aids to help folks understand how to access various GPIOs, I2C, SPI, etc from the core Linux operating system. It's designed to fit over the top of an rPi zero, though anything with a compatible 2x20 pin header should be able to make use of this board. It uses through hole modules for the individual sensors, making this fairly approachable for an individual to solder up. One thing to be aware of us the sub-assemblies do come close to the top of the 2x20 pin header, and you will want to make sure you are careful about potentially contacting the back of the 2x20 connector and the bottom of the assemblies (in particular the OLED screen has a tendency to have a component that's very close on the bottom, just be aware of that).

Honestly this is a great way to get a one stop smattering of being able to play with low speed i/o devices, and in an easy to solder package

Why the sub-modules?

Two reasons:

1) It makes it exceedingly approachable for individuals who want to build their own. The soldering requirements are very minimal to get a successful project

2) The time window we had to work with to make this happen for linux.con.au 2019 was exceedingly small, and using the modules eliminated a huge amount of risk at the time.

Where's the code?

I'll do you one better,

https://e-ale.org/linux-conf-au-2019/

and here:

https://cm.e-ale.org/2019/LCA2019/

Has all of the talk materials we covered using this board on a Raspberry Pi Zero, the slides, the code, etc. There's also a bunch of sample / test programs up in the Github that was used to verify the board.

The upside here is, most of it is written in shell code or Python. This is one of the advantages to using a Raspberry Pi, you don't need to go after low level kernel code to make a lot of this stuff work. Load up the code and go.