Laurentiu Badea

Incorrect timing at slow RPMs with acceleration

4

**Describe the bug** The test results in version 1.3.0 show the motor timing unexpectedly faster than the RPM indicates at 6 RPM, when LINEAR_SPEED mode is in use. At 60...

Add support for Toshiba TB6600 IC Datasheet at https://www.mouser.com/datasheet/2/408/TB6600HG_datasheet_en_20160610-771376.pdf Note: clock pulse timing is 2.2µs

Add unit tests, especially for timing ramp calculations

Interrupts ?

2

Use microsecond interrupts to drive the timing. This is architecture-dependent.

The changes from full acceleration to zero when reaching cruise speed cause a "jerk" in the system. Implement a smooth acceleration transition with one of the methods described in the...

I was thinking to make the driver aware of gear ratios to simplify the calculation needed from outside. They would be represented as two numbers such as 1:64, don't know...

Can PWM be used ? Can we use a combination of bit-banging and PWM ? At cruise speed the step interval is the shortest and might not allow for room...

See if it makes sense to combine stepper characteristics into a Motor class to be used by the driver. Inductance, current, voltage, steps from the spec sheet give max rpm,...

Add FFT

2

Integrate an FFT library to display frequency spectrum (or dominant frequency at least).

Low power / low noise

1

Enter CPU sleep modes instead of busy waiting or delay(), to reduce power usage. Use ADC Noise Canceler mode on AVR. From the Atmega328P docs: 24.6 ADC Noise Canceler The...