Simple proof-of-concept test of one of my new stepper motors with a 555, XOR gate, flip-flop and L6207 - full stepping at 1.8 degrees. Motors wired as bipolar parallel and powered with +12V and about 600mA per phase (eventually to be +36V and 1.4A per phase once I get the power supply built). Speed controlled in the test circuit with a potentiometer in the 555 RC section.
Ignore the top half of the breadboard (spare components) and the bottom quarter too (some other circuit I'm currently working on). The L6207 part of the board will eventually be controlled by a PIC16F684 and become part of a CNC milling machine.
multi fart motor
rodstartube 6 months ago
I have the same going in my house. My stepper also is as "squared" as yours. Im thinking to put some DAC to the driving transistors. Smooths the ride ;)
SpecklePattern 2 years ago
a bit less power and timming quiker . and then you got better
k323r 2 years ago
Cool. The PIC can actually do stepper timing and logic (quadrature outputs) itself; you can eliminate the 555, XOR gate, flip-flop etc. Good luck with the milling machine -- sounds like a fun project.
FlyByPC 2 years ago
Nice. What rpm does it manage with 12V ?
pilleyuppo23 2 years ago