I'm trying to run a Jameco 238538 12 volt 0.4 amp unipolar stepper motor. 12 volts is coming into the motor power block from a wall mount 1.5 amp supply. It reads just over 13 volts. The Stepper Test program causes the motor to move back and forward by one step only. A voltmeter shows only one coil of the motor is getting a changing voltage. The other stays at 0 volts. The motor ohms out ok from the terminal blocks at 60 and 30 ohms. The same thing happens on both motor terminal blocks. I've been over all my soldering a number of times.
Any ideas welcomed.
Motor Shield V2 with Arduino UNO
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- Franklin97355
- Posts: 23910
- Joined: Mon Apr 21, 2008 2:33 pm
Re: Motor Shield V2 with Arduino UNO
Could you post large, clear, detailed pictures of both sides of your board and the connections to it? Pictures should be less than 1meg in size. 800x600 works well.
- icemannie
- Posts: 3
- Joined: Wed Jul 08, 2015 4:02 pm
Re: Motor Shield V2 with Arduino UNO
Pictures attached.
- Attachments
-
- 20150708_204840.jpg (415.51 KiB) Viewed 226 times
-
- 20150708_204641.jpg (407.17 KiB) Viewed 226 times
- marshaj847
- Posts: 43
- Joined: Wed Jul 31, 2013 6:12 pm
Re: Motor Shield V2 with Arduino UNO
Just an observation, one motor you have wired
Black, Green, White & Yellow, Red, Blue
the other one seems to be
Green, Black, White 7 Yellow, Red, Blue
Black, Green, White & Yellow, Red, Blue
the other one seems to be
Green, Black, White 7 Yellow, Red, Blue
- adafruit_support_bill
- Posts: 88087
- Joined: Sat Feb 07, 2009 10:11 am
Re: Motor Shield V2 with Arduino UNO
Try your voltage measurements with the motor disconnected from the shield.
- icemannie
- Posts: 3
- Joined: Wed Jul 08, 2015 4:02 pm
Re: Motor Shield V2 with Arduino UNO
Turned out to be a bad shield - probably caused by a misconnection at some point. Thanks to everyone who responded.
Please be positive and constructive with your questions and comments.