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By jlong_mpls
I'm very new to these types of electronics, so I apologize basic skills.
I'm trying to make a stepper motor turn. Based on this article:
I purchased:
Arduino Uno - R3 (SKU DEV-11021)
EasyDriver - Stepper Motor Driver (ROB-12779)
Stepper Motor with Cable (ROB-09238)
I'm using Arduino Software (IDE) 1.8.1 running on a Windows 8.1 OS.
After failing to get the stepper motor to work using the above example, I went for very basic @ ... mples.html
I have the pieces connected and running a basic script
void setup() {
// put your setup code here, to run once:
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
digitalWrite(8, LOW);
digitalWrite(9, LOW);
void loop() {
// put your main code here, to run repeatedly:
digitalWrite(9, HIGH);
digitalWrite(LED_BUILTIN, HIGH);
digitalWrite(9, LOW);
digitalWrite(LED_BUILTIN, LOW);
My multimeter shows 5 v on pin 9 when the LED is lit and 0 when the LED is off.
No power through pin 8
Power is supplied to the EasyDriver board from a power adapter 12V...2.0A
The power led comes on.
using the ground and testing the stepper motor connectors My multimeter shows various voltages
I have tested continuity on the stepper motor, so I believe they are connected correctly.
I thought I might have damaged the EasyDriver board, so I purchased a new one with the same results.
Am I missing something basic, or any suggestions on troubleshooting?
Thanks for any guidance.