Arduino motor shield: How do you cut off the jumpers on the shield? I need more input pins and don't need the brakes so want to disable them . Doc. says to cutoff the jumpers. Not sure how. Kindly help.

 

There are a number of different Arduino motor shields. We can't help until we know which one you are using.

 

There are a number of different Arduino motor shields. We can't help until we know which one you are using.

It is a ROB-09670, Motor Driver 2A dual L298 H-Bridge

 

I can find no information on an Arduino motor shield that uses the L298 H-Bridge. Do you mean the ROB-09670 Motor Driver module?

 

I can find no information on an Arduino motor shield that uses the L298 H-Bridge. Do you mean the ROB-09670 Motor Driver module?

yes

 

Here is the user manual for the ROB-09670 module:
https://www.canakit.com/Media/Manuals/UK1122.pdf

 

Here is the user manual for the ROB-09670 module:
https://www.canakit.com/Media/Manuals/UK1122.pdf

Does not look like mine, maybe a mixup? Here is a pic of mine.

 

Sorry, my mistake. Details from the Amazon order are:

Arduino Motor Shield REV3 [A000079]

 

Hi,

From Arduino website:
https://store.arduino.cc/arduino-motor-shield-rev3?queryID=undefined

The documentation says the links are on the back of the board. They are marked brake disable A and B. The links are the connections between each pair of the pads, I can't tell from the picture if they are wire links or copper track. If it is wire just desolder them. If it is track you need to cut them with a fine craft knife, leaving a definite gap. This will disconnect the two pins on the header. If you want to reconnect at any time, just bridge the pads with a blob of solder.

 

Thanks. Can't see properly. Attached another pic. Looking for another insight as to whether there is a link between the 2 solder blobs. Looked at the doc. could not find anything on this.

 

If you look at the link I posted on the Arduino site it is clearer. On your picture you can see the header pins at the bottom are connected to the two pads directly above, then there is track to the two pads above them, the tracks between the top and bottom pads is where you need to cut.
Use a magnifier if you need to, you can get an app on your phone.
If you cut them correctly you will have no continuity between the header pins and the top pads.

 

Thanks. I looked at the site you posted i.e. https://store.arduino.cc/arduino-motor-shield-rev3?queryID=undefined
but could not find that, maybe another site?
Also, kindly let me know the phone app you mentioned. If all this is too much to ask, kindly ignore this post.

 

I’ve used similar boards. Of the four pads by “Brake Disable”, two pair are connected by a thin PCB trace. If you look close, you can see them under the coating. Cut these traces to free up the respective pins on the Arduino.

Also note that if you are powering the motors with more than 9V, you need to use separate power sources (one for the Arduino/shield and one for the motors). A trace near the Vin pin must also be cut. Here is the official Arduino shield documentation.

 

If you scroll down the page there is an image of the underside of the board, you can clearly see the links.

I don't know what kind of phone you have, Iphone or Android but if you search on the app store for magnifier, you should find something free.

 

Thanks to you both. I managed to cut the 2 brake traces. Just wonder if I have to cut the A0 trace as well.
Just an aside - I could not find the pic of the underside in the above 2 links, just found the top side, must be getting blind.

 

I was positive my link had detailed pictures. It doesn’t.
This site has several images. Here is the bottom.

 

Thanks

 

The three traces that may need to be cut are clearly labeled in the lower left of the back of the board.