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DRO board closer to working but still not

onecooltoolfool All Messages By This Member #51097 I got the board address problem fixed by just installing in another computer. There is some kind of input comming in but it is erratic and not working properly. I have tried a couple of encoders and the result is the same. The numbers flicker and jump but don't correspond to any real values. Does having the A and B channels reversed matter? I didn't think so. Any Help Appreciated Joe V.
Tim Goldstein All Messages By This Member #51111 Swapping A & B will reverse the direction, but that is it. Is it bad on all axis? What is the environment you are testing in? is it possible you are getting noise on the line? Do your encoders have built in pull-ups or do you have to add some? Lots of the nicer encoders are open collector and need pull-ups. Tim [Denver, CO] toggle quoted message Show quoted text I got the board address problem fixed by just installing in another computer. There is some kind of input comming in but it is erratic and not working properly. I have tried a couple of encoders and the result is the same. The numbers flicker and jump but don't correspond to any real values. Does having the A and B channels reversed matter? I didn't think so. Any Help Appreciated Joe V.
Jon Elson All Messages By This Member #51116 onecooltoolfool wrote: I got the board address problem fixed by just installing in another computer. There is some kind of input comming in but it is erratic and not working properly. I have tried a couple of encoders and the result is the same. The numbers flicker and jump but don't correspond to any real values. Does having the A and B channels reversed matter? I didn't think so. Reversing A and B is a time-honored method of reversing the sign of the motion. It most certainly will not cause problems in accurately counting the pulses. Mixing up the pairing of the signals on a differential encoder WILL cause unreliable reading, but most of these hobby boards don't accept differential signals. Differential encoders have A and A-, B and B- signals. The A- and B- are often shown with a "vinculum" or overbar, which I can't do here. Jon
William Scalione #51131 Joe, I put a Windows DRO program in the files section a while back that uses that DRO board, You can try that if your computer will do windows. It is called VB_DRO or something like that. I just wrote it as an exercise and it's not perfect, but it does work. toggle quoted message Show quoted text I got the board address problem fixed by just installing in another computer. There is some kind of input comming in but it is erratic and not working properly. I have tried a couple of encoders and the result is the same. The numbers flicker and jump but don't correspond to any real values. Does having the A and B channels reversed matter? I didn't think so. Any Help Appreciated Joe V.

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