Attiny pin & PWM use

[spanner888]

From Edward with the initial code: However, I would like to bring up that in the newer design, instead of use up all 4 PWM channels with 4 pin controlling the motor, we decided to use only 2 pwm pins controlling the enabled pin and 4 other pins controlling the directions of the motor -- a total 6 pins been taking up controlling the motors but we are left with 2 more pwm pins.

[spanner888]

If we are really short of pins can even save two more just by permanently enabling the driver as is done in the XCJ motor driver shield, or just connect the PWM signal to BOTH enable and one drive pin. Could even save a third pin by using the same PWM signal for both motors - which means that each motor would be fixed at the same speed.

[lumi3005]

I got an idea about the different development states. Why we don't keep the PCB with the Attiny and the L293 and develop another board in parallel. The new one could include an Atmega168/328 and another motor driver and being used ans the advanced "drone" besides the "workers" with the little Attiny brain.
Just make it two separate projects, Attiny and Atmega drones. This sounds to complicate or will split our resources?

[spanner888]

didn't we already say we were doing this in recent topics :)

I am focussing on getting everyone active & partkeepr and running
workshop next weekend, then I can start "doing" more.

On 10/08/12 12:52, Lutz wrote:

I got an idea about the different development states. Why we don't
keep the PCB with the Attiny and the L293 and develop another board in
parallel. The new one could include an Atmega168/328 and another motor
driver and being used ans the advanced "drone" besides the "workers"
with the little Attiny brain.
Just make it two separate projects, Attiny and Atmega drones. This
sounds to complicate or will split our resources?

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[lumi3005]

No we did not but it was just an upcoming idea. Right now we just have the old design and I think we should go with that for now.