odm-ea1 OLED display module for Analog Mk1 / DIP switches and troubleshooting

DIP switches and troubleshooting

Mostly for troubleshooting. The everyday use: with the device open and off, power the module from micro-USB and switch DIP 6 on to see text while you adjust brightness with the trim pot.

When done, switch DIP 4–7 off (towards the middle of the module). A test mode left on interferes with normal operation.

Where they are

Under the OLED panel. Press the plastic clip (on the long edge, near the USB socket) towards the board and, holding it, slide the panel up. The install guide has photos. The module can be powered on its own from a micro-USB cable.

What each switch does

DIP 1Inverted display
DIP 2, 3Brightness: both off = set by the trim pot; the other three combinations are fixed low, medium and high (the pot is ignored)
DIP 4Debug screen: firmware version and the state of the input pins
DIP 5Panel test: a sliding unlit vertical bar (inverted with DIP 1)
DIP 6Test text
DIP 7Firmware v1.0.2: a sample Analog Keys screen; v1.0.1: debug output over USB serial. Makes the screen look stuck if left on.

Nothing on the screen after installing

  1. Look over all solder joints: each should have a clean fillet, and no solder bridging neighbouring pins.
  2. Check the panel: switch DIP 6 on and power the module from a known-good 5 V micro-USB supply. It should show text with a web address. If not, the flat cable from the panel to the board has probably come loose: reseat it. If that doesn't help, the panel or board is faulty.
  3. If the panel works: switch DIP 4 on and all others off (DIP 6 too). It shows "DBG", "fw" with the version, and graphics that follow the input pins. Disconnect USB, then film the DBG screen while you power on the Elektron device, and send the video to e-mail: it shows whether an input pin gets no signal from the main board.

With USB power in DIP 4 mode, a multimeter in diode mode can also check that every signal from the main board reaches the module. If nothing helps, send the module in and we try to fix it.

Known issues

  • Vertical halo stripes, bottom-row leakage: fixed in firmware v1.0.5 (revC boards on). Write to e-mail with a photo of the serial number (left side of the bracket, below the code).
  • Screen protector pushed out: the kit's spacers were used; fit Elektron's original ones.