So after working out some current issues, the unit is working as expected and I have moved it into a housing. It’s almost completely sealed except for the headphone jacks I’m using as pump connectors. While it should be fairly water resistant, it is by no means waterproof.
The guts of the unit are complete. Headphone jacks allow for the easy exchange of pumps. A basic test script shows all pumps are running as expected. The next task is to place the unit in a housing that will protect it from the elements.
The sampler is moving along well. The setup reads the dates and times from a config file on micro sd for each of the 5 pumps to run. Time is kept by a real time clock and the pumps are micro submersible off the Web for less than $5 each. Next steps are putting together all 5 pumps and then packaging.
Get the source from github.