Linear travel control October 27, 2015 06:17AM |
Registered: 8 years ago Posts: 5 |
Re: Linear travel control October 27, 2015 11:56AM |
Registered: 8 years ago Posts: 5,232 |
Re: Linear travel control October 29, 2015 10:18AM |
Registered: 8 years ago Posts: 5 |
Re: Linear travel control October 29, 2015 12:44PM |
Registered: 8 years ago Posts: 5,232 |
Re: Linear travel control October 29, 2015 04:47PM |
Registered: 8 years ago Posts: 5 |
Re: Linear travel control October 29, 2015 07:10PM |
Registered: 8 years ago Posts: 5 |
Re: Linear travel control October 30, 2015 03:44AM |
Registered: 8 years ago Posts: 5,232 |
Re: Linear travel control October 30, 2015 04:52AM |
Registered: 8 years ago Posts: 5 |
Something is also in datasheet, but I don't understand it much:Quote
Ben
Also, it looks like you aren't doing anything with the reset pin. You need to pull/drive it high to bring the board out of the reset state. One way to do this is to connect it to the adjacent sleep pin, as described on the product page and shown in the minimal wiring diagram
Quote
Pololu
Reset Input (RESET). The RESET input sets the translator to a predefined Home state (shown in Figures 9 through 13), and turns off all of the FET outputs. All STEP inputs are ignored until the RESET input is set to high.
Quote
Pololu
Sleep Mode (SLEEP). To minimize power consumption when the motor is not in use, this input disables much of the internal circuitry including the output FETs, current regulator, and charge pump. A logic low on the SLEEP pin puts the A4988 into Sleep mode. A logic high allows normal operation, as well as start-up (at which time the A4988 drives the motor to the Home microstep position). When emerging from Sleep mode, in order
to allow the charge pump to stabilize, provide a delay of 1 ms before issuing a Step command.
Re: Linear travel control October 30, 2015 06:11AM |
Registered: 10 years ago Posts: 14,672 |