suzo Happ 3 inch trackball Only goes Left to Right

[Tumuchfun8487]

Hello,

I have new suzo happ 3 inch trackball.  Only goes left to right.  Checked all connections and I feel they are correct.

Is this a calibration issue or possibly a bag unit?

Any suggestions on what to check would be greatly appreciated.

[PL1]

I have new suzo happ 3 inch trackball.  Only goes left to right.  Checked all connections and I feel they are correct.

I assume the trackball is connected to the CHAMMA Game Elf system you mentioned in your other thread, right?

Which version optical boards and encoder do you have?  Red optical boards with a Molex harness/adapter connected to the trackball inputs on the Game Elf?

Does the cursor not move at all on the Y-axis (bad wiring or two burned out LEDs/photo-diodes) or does it move back and forth one step? (one stuck data line)

Here are some troubleshooting tips.

1. With power off and multimeter set to ohms, check for continuity between ground on the Red boards and ground on the PCB or power supply.



2. With power on and multimeter set to volts DC, check if 5v is present at both Red Boards.

3. Check the voltage on the four data lines. (2 per Red Board)

When you slowly move the trackball, you should see each data line alternate between logic high (near 5v) and low (near 0v) as the encoder wheel turns, blocking and un-blocking the optos to generate a quadrature waveform like this.



4. If one of the data lines is stuck high or low, check if one of the two IR LEDs on the board is burned out.
- Use your cel phone/digital camera to see if the LEDs are lighting -- the wavelength can't be seen by the human eye, but can be seen by a digital camera.



5. If one of the data lines is stuck high or low and both LEDs are OK, the problem is probably either with a Red Board photodiode or the wiring.
- Swap X- and Y-axis Red Board harness connections.
- If the problem follows the harness connection, it's probably the wiring.
- If the problem doesn't follow the harness connection, it's probably the Red Board photodiode.
- If the problem disappears, it may have been due to a poor connection earlier.  Swap them back and retest.


Scott

[Tumuchfun8487]

Thank you,  I'll check it out.   I appreciate the advice

[Tumuchfun8487]

Moving everything around and even replacing one of the boards the results are the same.   I can get it to work only in one direction.   up and down or left and right but not all 4 ways.  I've pluged in P1 purple wire, red, black, blue on the front, P2 green, double black, double red, yellow on the other side.  Then tried only P1 cables and only P2 cables, Still doesn't work.

When testing with dc v. P1 top / purple wire 4.18, red 5.87, black 7.8, blue, 4.18,   P2 top green wire 4.18, double black 14.2, double red 5.87 and yelllow 4.19

When moving trackball P1 purple wire will change from 4.18 to 2.23, no change on red,  black 7.8 to 7.1 and blue 4.18 to 2.23

When moving trackback P2 plugged in green no change, double black little change, double red no change, yellow no change

If I change reverse the plugs then I get the same readings but now P2 I get changes in ohms but not in P1

[PL1]

Make sure the red wire (5v) is on pin 2 and the black wire (ground) is on pin 3 of each Red Board,

When testing with dc v. P1 top / purple wire 4.18, red 5.87, black 7.8, blue, 4.18,   P2 top green wire 4.18, double black 14.2, double red 5.87 and yelllow 4.19

When testing with your multimeter set to Volts DC:
- You should have about 5v on the red wires -- looks OK.
- You should have close to 0v (ground) on the black wires -- did you get 7.8 V and 14.2 V  or was it 7.8 mV and 14.2 mV  ?  Big difference.

When moving trackball P1 purple wire will change from 4.18 to 2.23, no change on red,  black 7.8 to 7.1 and blue 4.18 to 2.23

When moving trackback P2 plugged in green no change, double black little change, double red no change, yellow no change

Since you are seeing no change on P2 yellow and green lines, that is where you need to look.
- Confirm that the red 5v wire is on pin 2 of that red board and that the black ground wire is on pin 3.
- Check if the LEDs for that board are working.
- Ensure the encoder wheel is in the slot of the optos so it can block/unblock the gap between the LEDs and photodiodes.  You can use a piece of thin cardboard in place of the encoder wheel if you aren't sure if the alignment is correct.  You should see the data lines change between logic HIGH and LOW when you block and unblock the gap.

Check your Game Elf manual.  It should show the correct pinout connections for connecting a trackball or two spinners. (either way, you're connecting two optical axes)
- To make the optical circuits on the red boards work, you need 5v, ground, and a pair of data lines.
- Red wires are 5v.
- Black wires are ground.
- Blue+purple and yellow+green wires are the data line pairs.

This heavy double green wire leading to the ring terminal is for bleeding off static electricity generated by rolling the acrylic trackball on the steel rollers.  Connect it to a "Frame Ground" like the green ground wire of your AC power input.



Scott