4 motors with fwd and rev… First off, you need a couple lm293 motor controllers -easy-peasy off-the-shelf… Now, since we are talking 8 output pins, which is a lot, just use a I/O expander. Done! -4 motors with fwd and rev, with only 2 output pins for scl and sda on the ol’ I2C lines. Of course, you could add as many I/O expanders and motor drivers as you want. I think with this I/O expander you can have up to 8 on one I2C line which is 16 motors.
He’s just saying that to control those two motor driver (for a total of 4 motors) you need 8 pins from your MCU. Since these are a lot, you MAY want to use an I/O expander, which is basically a chip that offers you more I/O pins to work on. If the 8 pins are not a problem for you then just go with the two motor controllers he listed.
Its not a challange when Its not a challange when what it is that you want somone to do a job for you. Try to understand, try to learn, try to set it up yourself. Its alot more rewarding for yourself and everyone else to help if you try to learn.
Hmm between the two pins on your BS you mean? I don’t know!
You should check schematics for both so that you can get “pinout” diagrams to understand which pin does which. Anyway for I2C one is called SCL and the other is SDA.
Great little motors. I have stacks of them and run them off 74*s or 293s.
If you want to go for an industrial look, you can unscrew the top canister and expose the geary guts...here's a picture of a robot that I made a while ago, with this done. I know. .it looks cool .. right??
I could tell you but that way i would teach you to learn it by yourself.
Check the datasheet for that chip, you’ll find every information you need to make it work. Really, datasheet are the keys to make everything work properly, like Oddbot taught me! SDA and SCL are just the two pins used by I2C communication (have a look at it on wikipedia).
Btw…i’m not trying to be harsh, i just want you to learn reading datasheets. Believe me, it pays you back, a lot!!! If it wasn’t for Oddbot’s advice i’d still be asking people around the forums how to make that ISD chip work, instead i read the datasheets like he told me and i’ve learned lots of things!
