Hi all,
Im trying to find a good way to drive a few motors from a Pic16F877a.
Speed and position aren't critical, I would like a resonable resolution of speeds but nothing over the top. Lets say im using 8 bits for speed control so maybe 256 bits of resolution for speed.
I have quite a lot of other code running, (serial com, ADC converters, button monitoring and such) so I dont want it to be time critical, which is why I've kind of ruled out PWM. That and I may want to drive 4 or 5 motors and only have 2 pwm modules.
I think the best option I have found is stepper motors but with a controller that allows you to send a digital speed value to it. It only had four bits so 15 speed resolution, * 2 as you can switch to half step. And im happy with this but can't actually find the IC anywhere...
Does any one have any good options for controlling a motors speed without using PWM. I would much prefer to just output say 4 bits for speed and have them latch until I get around to changing it again. Is this possible?? Brushed, brushless, stepper or servo...
Thanks in advance for any considerations.
Im trying to find a good way to drive a few motors from a Pic16F877a.
Speed and position aren't critical, I would like a resonable resolution of speeds but nothing over the top. Lets say im using 8 bits for speed control so maybe 256 bits of resolution for speed.
I have quite a lot of other code running, (serial com, ADC converters, button monitoring and such) so I dont want it to be time critical, which is why I've kind of ruled out PWM. That and I may want to drive 4 or 5 motors and only have 2 pwm modules.
I think the best option I have found is stepper motors but with a controller that allows you to send a digital speed value to it. It only had four bits so 15 speed resolution, * 2 as you can switch to half step. And im happy with this but can't actually find the IC anywhere...
Does any one have any good options for controlling a motors speed without using PWM. I would much prefer to just output say 4 bits for speed and have them latch until I get around to changing it again. Is this possible?? Brushed, brushless, stepper or servo...
Thanks in advance for any considerations.