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Dirty Glitch Assembly Manual
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Troubleshooting
I can’t get good solder flow on a few of the pads!
The most likely cause of this is your iron is not hot enough. I love my 13w pencil iron but it doesn’t get
hot enough to get good solder flow on ground pads. I grabbed a cheap 25w iron and all pads flowed like
magic. 25 watt should be plenty warm enough, don’t go higher or you will start cooking components.
No audio coming out of the output jack
See step 8 of the Interface board build. The only time I had audio issues was once when I trapped R8
under the output jack, which snapped the lead on R8.
One or more knobs don’t work
If everything works fine with the exception of one or more knobs, the most likely cause is that some of
the BAT85 diodes are installed in reverse.
I think the microcontroller is dead
Every single MCU has been programmed and fully tested, then packaged into antistatic foam under ESD
safe conditions. Unless you did something crazy like rubbing a balloon on your jumper and discharging it
onto the MCU pins then probably not .. check your solder joints!
I think the 7 segment display is dead
Every 7-segment display was tested during packaging. Double check the solder joints on the display pins,
there could be a bridge/short or dry joint somewhere.
The knob on the rotary encoder keeps sliding down
The rotary encoder has a D-shaft and although it seems it seems logical to place the grub screw on the
knob onto the flat part of the shaft, the grub screw must be in contact with the rounded part of the
shaft so it can grip tightly .. also make sure you leave enough of a gap between the knob and the nut so
that the button can be pressed.
When I connect the module to the PSU, the power trips
This will happen when there is a short circuit somewhere. Refer to step 11 of the Interface board build.
If it’s not a short under one of the SPST switches, then it must be a sort in a solder joint or maybe a
component lead is touching something it shouldn’t.
