I have tried to find similar projects before but I loose the will - can someone please point me to the right page?
I have had a Pi for ages....and I know I could have been practising in the meantime......but i have a project i am keen to design NOW
I am building a CNC (another project) that is nearly finished but I bought a load of plug and play and this project I want to use the Pi (that I had intended to use) - it gave me the idea though.....
I would like to control (up to 4) little motors that will turn 4 little screwdrivers that will be making remote (wired) adjustments on carburetors ( i am trying to make them run cleaner (slightly)) ideally i need a practical way to start forwards, reverse and stop either on a potentiometer (or 4) or coded by the pi. The motors will be small and expected to make up to four complete revolutions (no more!). I don't need position control - I just need to know the motors are moving slowly in a particular direction at approx 0.1 rpm. I dont need much torque as I dont want the screws to jam tight.
It would be handy if i could make an inductive loop around an HT lead and display RPM on a mini screen....it would be handier still if i could make the frequency one of the variables that I could use to code with.......and enter instructions via a bluetooth keyboard
power off the 12v battery down via a USB outlet
I am not even sure I need stepper motors but could i use something cheaper that i could roughly time to guess their approximate position?
If this works I will consider trialling the Pi as the CNC controller (but I had enough to cope with on the first build)
Thanks in advance
Dan