On this page I will mention some common problems I often find in non-working kits.
- Resistor networks: Make sure you install the resistor networks the right way around. Pin 1 is marked with a dot on the networks, and usually with a "1" on the board. When the networks are installed backwards some kits will work strangely and others not at all.
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IDC connectors: Make sure you insert the cable straight into the connectors before crimping. If the cable is not straight, you may get short circuits between adjacent wires. You can check with an ohm-meter after assembling the cable.
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LCD wiring: The displays I supply have pins in one row (with the exception of the LCD24x2B), and the cable is wired straight through 1 to 1, 2 to 2 etc. 15 and 16 has to be swapped on some displays to turn the backlight on. Displays with two-row connectors often have mirrored connectors. If you don't wire them correctly they will most likely be destroyed! Make sure pin 1 of the display is actually connected to pin 1 of the display connector etc. The LCD24x2B is supplied with an adapter, as it also has a mirrored connector.
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