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JRE
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I've been trying to setup two MPR121 capacitive touch sensors and from what I understand, I need to cut the PCB trace between the ADD and GND pins. I've tried scrappingscraping off a bit between them on the top side of the PCB, but they still are showing being connected on my multimeter. Where is the proper location on these PCBs for cutting this trace?

Update: The module in question is a XO MPR121 Breakout

The product page has a view of the front, below is a picture I took of the back:   

enter image description here

I see now on a product page it mentions the jumpers. I assume these are the pairs of contact pads on the back side?. So do I need to cut a trace in between the pair next to ADD and then connect ADD to say SDA with a wire?

I've been trying to setup two MPR121 capacitive touch sensors and from what I understand, I need to cut the PCB trace between the ADD and GND pins. I've tried scrapping off a bit between them on the top side of the PCB, but they still are showing being connected on my multimeter. Where is the proper location on these PCBs for cutting this trace?

Update: The module in question is a XO MPR121 Breakout

The product page has a view of the front, below is a picture I took of the back:  enter image description here

I see now on a product page it mentions the jumpers. I assume these are the pairs of contact pads on the back side? So do I need to cut a trace in between the pair next to ADD and then connect ADD to say SDA with a wire?

I've been trying to setup two MPR121 capacitive touch sensors and from what I understand, I need to cut the PCB trace between the ADD and GND pins. I've tried scraping off a bit between them on the top side of the PCB, but they still are showing being connected on my multimeter. Where is the proper location on these PCBs for cutting this trace?

Update: The module in question is a XO MPR121 Breakout

The product page has a view of the front, below is a picture I took of the back: 

enter image description here

I see now on a product page it mentions the jumpers. I assume these are the pairs of contact pads on the back side. So do I need to cut a trace in between the pair next to ADD and then connect ADD to say SDA with a wire?

Added photo and link to module.
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deltaray
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I've been trying to setup two MPR121 capacitive touch sensors and from what I understand, I need to cut the PCB trace between the ADD and GND pins. I've tried scrapping off a bit between them on the top side of the PCB, but they still are showing being connected on my multimeter. Where is the proper location on these PCBs for cutting this trace?

Update: The module in question is a XO MPR121 Breakout

The product page has a view of the front, below is a picture I took of the back: enter image description here

I see now on a product page it mentions the jumpers. I assume these are the pairs of contact pads on the back side? So do I need to cut a trace in between the pair next to ADD and then connect ADD to say SDA with a wire?

I've been trying to setup two MPR121 capacitive touch sensors and from what I understand, I need to cut the PCB trace between the ADD and GND pins. I've tried scrapping off a bit between them on the top side of the PCB, but they still are showing being connected on my multimeter. Where is the proper location on these PCBs for cutting this trace?

I've been trying to setup two MPR121 capacitive touch sensors and from what I understand, I need to cut the PCB trace between the ADD and GND pins. I've tried scrapping off a bit between them on the top side of the PCB, but they still are showing being connected on my multimeter. Where is the proper location on these PCBs for cutting this trace?

Update: The module in question is a XO MPR121 Breakout

The product page has a view of the front, below is a picture I took of the back: enter image description here

I see now on a product page it mentions the jumpers. I assume these are the pairs of contact pads on the back side? So do I need to cut a trace in between the pair next to ADD and then connect ADD to say SDA with a wire?

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deltaray
  • 205
  • 3
  • 13

How to cut the ADD to GND trace on a MPR121 capacitive touch sensor

I've been trying to setup two MPR121 capacitive touch sensors and from what I understand, I need to cut the PCB trace between the ADD and GND pins. I've tried scrapping off a bit between them on the top side of the PCB, but they still are showing being connected on my multimeter. Where is the proper location on these PCBs for cutting this trace?