MX2424 Mods - OLED Display

Discussion in 'TASCAM MX-2424' started by Soniqfreq, Jun 28, 2020.

  1. Soniqfreq

    Soniqfreq New Member

    Joined:
    Jun 2019
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    Gear:
    MX2424
    I've been trying to mod my MX2424 with an 20x2 OLED display. Anyone been successful?

    I have had luck with other devices, so I was hoping this would be straightforward. I purchased a Newhaven OLED (NHD-0220DZW-AY5 ) from Mouser and soldered on a pair of 7p headers. Swapped out the new display and old, nothing.

    When I looked at the pin layout of the Newhaven and the MX2424, I noticed that the pin layout seems to be flipped, so I tried replacing the Tascam 14p ribbon cable with a pair of 7p header jumper cables so I can connect Pin 1 (VDD) on the Tascam to Pin 2 (VDD) on the Newhaven and so on. I get a little intermittent flicker of lines on each character space, but that's it. The only pin that looks like there is a mismatch is Line 5 of the OLED (R/W) and Line 6 of Tascam (NC).

    Here are the pin layouts:

    Tascam MX2424 (per Front Panel schematic)
    Pin No.
    1 - VDD - +5 Supply voltage
    2 - VSS - Ground
    3 - RS
    4- NC
    5 -EN
    6 - NC
    7- D1
    8 - D0
    9 - D3
    10 -D2
    11 - D5
    12 -D4
    13 -D7
    14 - D6
    15- NC
    16 - NC

    NHD-0220DZW-AY5
    Pin No.
    1 - VSS - Ground
    2 - VDD - Supply Voltage for OLED and logic (+5V)
    3 - NC - Must not be connected
    4 - RS - MPU- Register select signal. RS=0: Command, RS=1: Data
    5 - R/W - Read/Write select signal, R/W=1: Read R/W: =0: Write
    6 - E - Operation enable signal. Falling edge triggered.
    7 - DB0
    8 - DB1
    9 - DB2
    10 - DB3
    11 - DB4
    12 - DB5
    13 - DB6
    14 - DB7
    15 - NC - Must not be connected
    16 - NC - Must not be connected
    Last edited: Jun 29, 2020