![]() Reverse the motor and they come towards each other, closing the blinds. When you spin the motor one direction, the binder clips will go away from each other, opening the curtains. In the drawing, with the binder clips in the middle, this is the curtains closed. ![]() UPDATE: I have added a picture/diagram of how I wrapped the fishing line with the binder clips. To attach the curtains, I took some binder clips and clipped them to the curtains, after seeing where those clips met the line, I tied them off to opposite sides of the line, so they go in opposite directions. I then wrapped this loop multiple times around the stepper motor pulley, until the line was tight. I could then tie the two ends of the line together to make a loop. I put one wrap around the idler pulley and pulled the other end to the pulley on the stepper motor. I switched to standard fishing line that can stretch pretty easily. I started by using a high strength, low stretch type of line but realized that have no play was not going to be a good idea. NOTE: Not all stepper motors will have the same color pinout!Ĭonnecting the fishing line was the hardest part of this project. Stepper driver 2B -> stepper motor GREEN wire Stepper driver 2A -> stepper motor YELLOW wire Stepper driver 1A -> stepper motor RED wire Stepper driver 1B -> stepper motor GRAY wire Power Supply V-> Arduino GND -> stepper driver GND pins -> bluetooth GNDĪrduino +5V -> stepper driver VDD -> bluetooth VCC Power Supply V+ -> Arduino Vin -> stepper driver VMOT pin On the wires that I actually put through a hole, I created a solder bridge between it and whatever pin it was being connected to.Īrduino D12 -> stepper driver DIRECTION pin ![]() I intentionally didn't cut the long leads of the components so that I could use them to solder to. Once the main components were in place it was time to start wiring them all together. Once I had the components where I wanted them, I stuck the PCB in the vise and got to soldering.
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