The Velleman K8055 Kit - HELP!!!

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slakkie

New Member

• Feb 5, 2009

• #1

Hi,

I have this kit which I recently had someone build for me...

**broken link removed**

How do I connect a 1.5 V battery to test the kit.

I am talking about a 1.5V AA battery...

Analog Input 1 I connected the positive of the battery.
Analog Ground I connected the negative of the battery.

Why does it still show nothing!

 

ccurtis

Well-Known Member

• Feb 5, 2009

• #2

As a test for functionality make sure pots RV1 (labeled ATT1) and RV2 (labeled ATT2) are not set fully clockwise, or counterclockwise. Try setting them midway, and then try your battery test again.

 

Last edited: Feb 5, 2009

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slakkie

New Member

• Feb 5, 2009

• #3

Thanks. Can I send you a picture to show you how I connected everything?

 

ccurtis

Well-Known Member

• Feb 5, 2009

• #4

Sure. I take it my suggestion didn't make any difference?

 

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slakkie

New Member

• Feb 6, 2009

• #5

Thanks! It Worked! u r a star!!!

 

ccurtis

Well-Known Member

• Feb 6, 2009

• #6

Thanks. I'm happy to hear it's working for you. Now, either set those pots fully counterclockwise or fully clockwise, whichever will give you the greatest voltage reading so that your measurements will be accurate.

 

Last edited: Feb 6, 2009

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slakkie

New Member

• Feb 6, 2009

• #7

Thanks. I'm going to make sure my battery shows exactly 1.5 Volts. Then I'm going to keep turning the potentiometer until it also shows 15 / 1.5 or 150 (need to find out from manual first).

 

ccurtis

Well-Known Member

• Feb 6, 2009

• #8

Good idea. Make sure there are no jumpers installed at locations labeled SK2 and SK3 on the circuit board, or you will be measuring an internal +5v voltage on the board combined with your battery voltage.

The user's manual and assembly manual is at the link you provided in your first post.

 

Last edited: Feb 6, 2009

rebew

New Member

• Apr 2, 2014

• #9

I removed the jumpers at SK1 and SK2 to check external voltages less than +5V on my K8055D USB Board. Putting them back let me check the analog inputs using the USB Board's internal power combined with the software demo to control the voltage levels.