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| Looking for Penny & Giles / Traxsys trackball help please |
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| lilshawn:
y looks like it goes into pins 3 and 5 on the IC... this means the outputs for those 2 channels are 4 and 6. you'll have to find out which pins on the connector are connected to 4 and 6 on the chip. this will be your ya and yb I can't see from the photos where the x goes to. it disappears under the chip. the reciever channels ya yb look like they run through r3/r4 then c3/c4 then Q3/Q4 finally r8/r9 to the chip. the same scheme is followed through the x channels. test for continuity from R6/R7 to which pins on the IC. |
| hsr:
--- Quote from: lilshawn on January 04, 2014, 07:55:35 pm ---y looks like it goes into pins 3 and 5 on the IC... this means the outputs for those 2 channels are 4 and 6. you'll have to find out which pins on the connector are connected to 4 and 6 on the chip. this will be your ya and yb I can't see from the photos where the x goes to. it disappears under the chip. the reciever channels ya yb look like they run through r3/r4 then c3/c4 then Q3/Q4 finally r8/r9 to the chip. the same scheme is followed through the x channels. test for continuity from R6/R7 to which pins on the IC. --- End quote --- Shawn, Thank you so much for bearing with me! Following what you said above, I went back and checked again. In the diagram I drew above, I had #2 (leg on the IC) listed as the upper right pin in the RJ45. That was a mistake, it's actually #6 (leg on the IC). 6 (output) corresponds to 5 (input) and 4 corresponds to 3. Those are the Y signals. Tracing the leads on the printed circuit off the X (the way I think you did it), I find that legs 8 and 10 from the IC correspond to 9 and 11 (inputs on the IC) and would be the X signals. So these are my six connections (the other two being vdc+ and vdc-). As you said before, once I wire this into an Opti-wiz, if the direction is reversed, I should just be able to swap the outputs from their respective axis (Xa and Xb to Xb and Xa), is that what you meant? I really can't thank you enough! |
| lilshawn:
--- Quote from: hsr on January 04, 2014, 10:24:58 pm ---if the direction is reversed, I should just be able to swap the outputs from their respective axis (Xa and Xb to Xb and Xa), is that what you meant? --- End quote --- yes. |
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