Flora

I designed the stepper mount for the axis module in Flora. It’s using the Nema 17 17HS4401 as the stepper motor, which I’ll connect to a lead screw with a 5mm to 8mm flex shaft coupler. The small box on the side is for the connectors to the base, but I need to design the board that will connect there to control the stepper board. I also spent a fair amount of time moving variables to a global variable studio for variables that I’m repeatedly using.

After the design of the board, we can move on to the toolhead, then the bed, and then the design should be complete!

I made some updates to the schematic and then designed the PCB. I found footprints to Adafruits magnetic pogo pins, which I think I’ll be using to attach components and keep it modular. The PSU will be wired to the terminal on the PCB, and the 24V outputs will go to 2 XT30U connectors (not on the PCB). The case will expose the connectors and pogo pins, so new components can be added onto it.

A rough BOM:

• LCP300-24D5 PSU
• RPi Zero 2W
• Wemos D1 Mini
• 2x XT30U connectors
• 5mm pitch 2-pin screw terminal
• 2x 5-pin Magnetic Pogo Pin connectors
• IEC 320 C14 Power Socket

Completed the initial schematic for the base. I’m not completely sure this will even work as is. I have AC power from any wall outlet going into the PSU (likely a LCP300-24D5), and I use the 5V output to power the RPi and ESP board. I plan on using an I2C bus to communicate between the modules and the RPi, and UARC to communicate between the ESP and RPi, which I think I wired correctly? Then I have the 24V outputs from the PSU that I need to use, which will eventually be powering the motors. I need to add a switch between the PSU and receptacle so that you can turn the printer off and some XT30U connectors so the modules can get 24V power.