Difference between the operation of SX on programmer board or bread board

John Whitfield

I got the SX to do a voltage comparison on the programmer board, but when I put it on the bread board it doesn't make the decision
about the voltage levels are the pins. I know the SX is functioning properly because it is sending out serial data that matches up for one measurement being higher, but never the other. I guess what I'm wondering is there something else that needs to be grounded that wouldn't on the programmer or something of that nature?

Thanks,
-John Whitfield

LoopyByteloose

I suspect you overlooked a simple connection somewhere.
Without the project sitting if front of me, it is impossible to check your work.

If you draw and post a schematic of your 'AS BUILT' device, someone can constructively comment.
And possibly, you might identify your problem while creating the drawing.

At times, electronics is a lot of tedious details with wonderous results.

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"When all think alike, no one is thinking very much.' - Walter Lippmann (1889-1974)

······································································ Warm regards,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan

SteveW

>If you draw and post a schematic of your 'AS BUILT' device, someone can constructively comment.

Or a (good) photo of what you built might give us a clue, too.

Steve

Guenther Daubach

As usual, more details about the project make it much easier to help you out of a problem instead of letting us doing guesswork like:

- Do you use the SX-internal comparatoer for voltage comparison?
- If so - how did you configure port B?
- What are you using as "programmer board", and what is your breadboard?

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Greetings from Germany,

G