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Step 7Troubleshooting
Time to test your work! Grab the Pixecutor demo programs from here ( or http://moin.elinux.org/wiki/JuiceBoxPixecutor if that doesn't work). Copy them to your memory card (root directory only - the picture viewer doesn't support folders). Insert card and adapter into JuiceBox. Install batteries or plug in the AC adapter, and bravely turn it on!
If the JuiceBox doesn't work normally, check the soldering of pin 5 first. If that isn't it, you've probably managed to make an accidental connection to some pad or trace you shouldn't have touched at all. No other likely mistake involving only the pads you were supposed to solder to would have this effect. Checking your work again, perhaps with a better magnifying glass, is all I can really suggest if this happens.
At this point, you should be in the picture viewer (or perhaps a menu that allows you to choose either the picture viewer or the MP3 player). Select one of the demo programs as if it were a picture - TINYGL_SPIN, perhaps.
You will, at least briefly, see a screen that's mostly garbage - after all, these programs aren't REALLY pictures. If that screen remains, and contains text that reads "REQUIRES PIXECUTOR", the Pixecutor completely failed to trigger. Perhaps you have a solder bridge, or one of the PIC pins isn't actually soldered to the pad beneath it. (Pin 6 seems to be the most likely place for this to happen, since it's between two other pins. Try wiggling it gently with a small screwdriver tip - if it can move from side to side, it's obviously not soldered.)
If the screen contains garbage, but no "REQUIRES PIXECUTOR" message, then the program actually ran - the first thing the programs do is clear that message from the screen. If the screen stays that way, perhaps the program crashed for some reason, or it simply wasn't intended to display anything. For example, the SHELLY program launches a command shell on the serial port. Unless you have a serial port mod installed, and use it to issue some command that affects the screen, nothing is going to appear to happen on the JuiceBox.
Generally, the way to exit a Pixecutor program is to turn the JuiceBox off and back on. It's possible for programs to be written that can exit back to the picture viewer when done, but this limits what they can do, so I doubt there will be many such programs.
If for some reason you want to completely disable the Pixecutor, this can be done without completely desoldering it. Just connect PIC pin 4 (the one that's not currently connected to anything) to ground - a nearby area of the shielding foil will work. This will keep the PIC permanently in a reset state, so any remaining effects on JuiceBox operation have to be due to soldering-related problems.
If the JuiceBox doesn't work normally, check the soldering of pin 5 first. If that isn't it, you've probably managed to make an accidental connection to some pad or trace you shouldn't have touched at all. No other likely mistake involving only the pads you were supposed to solder to would have this effect. Checking your work again, perhaps with a better magnifying glass, is all I can really suggest if this happens.
At this point, you should be in the picture viewer (or perhaps a menu that allows you to choose either the picture viewer or the MP3 player). Select one of the demo programs as if it were a picture - TINYGL_SPIN, perhaps.
You will, at least briefly, see a screen that's mostly garbage - after all, these programs aren't REALLY pictures. If that screen remains, and contains text that reads "REQUIRES PIXECUTOR", the Pixecutor completely failed to trigger. Perhaps you have a solder bridge, or one of the PIC pins isn't actually soldered to the pad beneath it. (Pin 6 seems to be the most likely place for this to happen, since it's between two other pins. Try wiggling it gently with a small screwdriver tip - if it can move from side to side, it's obviously not soldered.)
If the screen contains garbage, but no "REQUIRES PIXECUTOR" message, then the program actually ran - the first thing the programs do is clear that message from the screen. If the screen stays that way, perhaps the program crashed for some reason, or it simply wasn't intended to display anything. For example, the SHELLY program launches a command shell on the serial port. Unless you have a serial port mod installed, and use it to issue some command that affects the screen, nothing is going to appear to happen on the JuiceBox.
Generally, the way to exit a Pixecutor program is to turn the JuiceBox off and back on. It's possible for programs to be written that can exit back to the picture viewer when done, but this limits what they can do, so I doubt there will be many such programs.
If for some reason you want to completely disable the Pixecutor, this can be done without completely desoldering it. Just connect PIC pin 4 (the one that's not currently connected to anything) to ground - a nearby area of the shielding foil will work. This will keep the PIC permanently in a reset state, so any remaining effects on JuiceBox operation have to be due to soldering-related problems.
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