Developing without hardware
If you have a Raspberry Pi available, you can quickly boot up a near-exact environment to a Pioreactor. We can mock out the hardware needed, but everything else will work: networking, the Pioreactor UI, MQTT, running jobs, plugins, etc.
- Install the Pioreactor software on to a microSD card by following the instructions here.
- Power the Raspberry Pi. Since there's no HAT hardware, there won't be a blue blinking LED. The Raspberry Pi will still connect to the network you provided in the setup.
- SSH into the Raspberry Pi. Instructions on how to SSH in.
- You should also be able to visit http://pioreactor.local
- Once SSH'ed in, we need to add some "mocking" packages. Enter the following:
sudo pip3 install fake-rpi
The environment variable
TESTING will determine if the Pioreactor should run in "testing" mode (i.e. mock out hardware required, and fake some data). We also need to specify the location of the
config.ini file with the
GLOBAL_CONFIG env variable. For example, we can mock the stirring job by entering:
TESTING=1 GLOBAL_CONFIG=/home/pioreactor/.pioreactor/config.ini pio run stirring
However, the experiment needs to be mocked out too:
EXPERMENT="Demo Experiment" \
pio run stirring
That's a lot of typing variables, so you could move these environment variables to
And add anywhere:
export EXPERMENT="Demo Experiment"
And finally enter:
Now you can do
pio run stirring without having to enter in the environment variables.