A02 Released for Fabrication
All the major fixes and redesigns have been implemented and the gerbers have been sent off to be turned into some new PCBs! Here are some of the major chang...
Bigger Parts, Lower Cost
Redesigning for cost and component size After some thought and exploration, I decided to move forward with redesigning the board with some key things in min...
Accepting Failure
USB to UART Bridge IC won’t work I’ve been struggling with getting the USB to UART functionality working, but to no avail. Last weekend I spent some time in...
Fixing Solenoid Control
AKA Check your pin types While testing the solenoid control, I noticed that the GPIO would never go high to enable the high power MOSFET. While doing some d...
Fixing Automatic Firmware Downloads
While trying to fix the automatic download of firmware I noticed a possible source for the problems: pins on the schematic symbol don’t match the actual pino...
A01 Boards and Some 3D Prints
Over the weekend I assembled two of the A01 boards with some successes and some errors that require board updates. I also managed to get a basic firmware c...
Bare PCBs have Arrived
It’s always an exciting time in a hardware project’s life when you get that first batch of PCBs in from the fab house. I ordered these PCBs from JLCPCB us...
Designing a Solenoid Stand
An important element to the overall functionality of the system is a stand to hold the solenoid and other times above the pool of liquid. It needs to be able...
Enclosure Print Results
Over the weekend I got around to test printing the two enclosure pieces on a Prusa i3. The prints came out really well, only downside is the filament colo...
Starting things off
Starting off the project website, and getting a hang of creating a static website using Jekyll. So far so good, but it certainly isn’t a walk in the park. Th...