Hi can anyone help me by writing code for arduino. I need to writ using drv8825 driver,and arduino shield v3, and Nema 17 steper motor.
If someone would be willing to help me, I would be very happy.
I am a beginner in programming myself.
The search phrase "arduino drv8825 stepper tutorial" will turn up lots of ideas, and even some tutorials!
Be sure to follow instructions to set the current limit correctly, and to use an adequate, external motor power supply.
I tried but it didn't work for me.
If you want help from this forum, please read and follow the instructions in the "How to get the best out of this forum" post.
People are happy to answer specific questions about your well-documented attempt.
No you’re not, you’re not learning anything at all if someone else does the work for you.
Your skill level will be car wash assistant.
I am also willing to help. Say what you did, show what you did, with drawing and code. I have a stepper simulation ready, if it fits your project.
Hello, I wrote this code so I can write how many mm the motor will rotate. my motor was more or less just shaking as you can see in the video below
Thanks for all help.
(Attachment 20230309_103131.mp4 is missing)
Hi,
Do you still have the problem?
If not, what fixed it.
Please post code and can we please have a circuit diagram?
An image of a hand drawn schematic will be fine, include ALL power supplies, component names and pin labels.
Thanks.. Tom... 
Your picture shows a red wire connecting to the 0v line - is that what you wanted ?
The gray wire is in Pin 1. That pin is also used for your USB (upload sketch), so you should find an available pin on the Arduino for the Gray wire. This is what I see:
--- | | YEL +5v
--- | | RED GND
--- | | RED 2B
--- | | BLU 2A
Loop PUR | | GRN 1A
Loop PUR | | BLK 1B
Pin2 WHT | | RED +5v
Pin1 GRY | | YEL GND
Pinout and information:
+-------------------------+
LOW=DSBL | ENABLE A4988 VMOT | 8-35vdc ---+ 100uf electro cap
| MS1 GND | gnd -------+ pwr spike protect
| MS2 2B | stepper 2B
| MS3 2A | stepper 2A
SLP | RESET 1A | stepper 1A
RST | SLEEP 1B | stepper 1B
Pin 3 | STEP VDD | 5vdc
Pin 2 | DIR GND | gnd
+-------------------------+
MS1 MS2 MS3 Step resolution
Low Low Low Full step
High Low Low 1/2 step
Low High Low 1/4 step
High High Low 1/8 step
High High High 1/16 step
SET DRIVER CURRENT LIMIT
1. Power A4988 driver (Vdd, GND)
2. Connect RST to SLP
3. Disconnect motor
4. Apply USB power
5. Calculate current limit: Current Limit = Vref ÷ (8 × Rcs)
6. A current limit of 1A (standard) needs Vref of 540mV
7. Adjust POT while measuring Vref at GND to POT (metal screw)
8. If the motor is making a lot of noise, lower the current limit
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