Author Topic: Extra + and - pads on SAWSE board  (Read 94 times)

Guybrush

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Extra + and - pads on SAWSE board
« on: August 10, 2017, 04:37:38 AM »
Hi all

It's been a long tome since I put a Madbean board together and have seeminly forgotten some of the basics.

The SAWSE board has the usual four 3pdt connection pads at the base of the circuit: In, Out, 9vt and Grnd

At the top of the board are extra pads for 9vt and Grnd.

My question is do I need to connect these two extra pads to my test rig when testing the board or do I just need to connect the four 'normal' pads?

Thanks in advance

WormBoy

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Re: Extra + and - pads on SAWSE board
« Reply #1 on: August 10, 2017, 04:47:04 AM »
If I look in the build doc, there is no +9V connection at the lower end of the PCB: it's ground, LED switch ground, LED+, LED-, in and out. Makes sense as the switch does not need 9V  8). The bottom ground pad is connected to the top ground pad (you can check with a DMM set for continuity). So, the top 9V+ goes to your testing rig, either of the grounds, and the in/out.

Guybrush

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Re: Extra + and - pads on SAWSE board
« Reply #2 on: August 10, 2017, 05:00:20 AM »
If I look in the build doc, there is no +9V connection at the lower end of the PCB: it's ground, LED switch ground, LED+, LED-, in and out. Makes sense as the switch does not need 9V  8). The bottom ground pad is connected to the top ground pad (you can check with a DMM set for continuity). So, the top 9V+ goes to your testing rig, either of the grounds, and the in/out.

Ahh ok, thank you. I was even more confused than what I thought!

Thanks for setting me straight!