It is used to control bipolar stepper motors. The DRV8825 is a microstepping driver module similar to the A4988 module. Stepper drivers send the current to stepper motor through various phases. We previously controlled the same Nema17 stepper motor with A4988 stepper driver and Arduino.Ī stepper driver module controls the working of a stepper motor. We will also use a potentiometer to control the direction of the stepper motor to rotate it in clockwise and anti-clockwise direction. In this tutorial, we are going to control NEMA 17 stepper motor using Arduino and DRV8825 stepper module. 28-BYJ48 has relatively lower torque than the other stepper motors like NEMA 14, NEMA17. In our previous project, we controlled 28-BYJ48 stepper motor using Arduino.

Stepper motor can be operated in different step modes such as full step, half step, ¼ step by applying appropriate logic levels to microstep pins of stepper module. By changing the rate of the control signal applied, we can easily control the motor speed. NEMA 17 stepper motor has a step angle of 1.8° that means it will take 200 steps for a 360° rotation. PS.A stepper motor is a type of DC motor that works in discrete steps and used everywhere from a surveillance camera to sophisticated robots and machines. Testing (including photography, there is output for shutter), fixing bugs There are 2 things I'm planning for the near future:

The package is usable now, but not extensively tested yet (because of cloudy sky). I wrote software, and modeled 3D-printed parts, he designed the electronics. This year, a few weeks ago, we finally started the project.

I was talking with my friend about this idea for years. The real telescope will follow the virtual one. Usage is simple: point a known object on the sky with your telescope (manually or using gamepad's analog stick and dpad) and sync the driving software with Stellarium's virtual telescope (the dummy one, since no driver is needed). Additionally some rolling bearing have been used. There are some optional parts: GPS module (on the same PCB as stepper drivers), touch screen and gamepad. The drive uses two stepper motors, two 'dumb' stepper drivers (DRV8814) on custom PCB (RPI shield), custom software and a Raspberry PI. First of all the repository It contains software, CAD files (STEP and native FreeCAD), circuit diagrams and PCB layouts.

Arduino stellarium