2x16 LCD Display PCB

Discussion in 'Marketplace' started by joeyd999, Dec 7, 2011.

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  1. joeyd999

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    I've got a quantity of custom 2x16 LCD display PCBs that were for a customer who has hit hard financial times. I'd like to get rid of them.

    I have 2 versions of the PCB, one with a PIC18F2321, and one with a PIC18F2420.

    The display has a blue backlight (always on, but configurable for either software control for on/off or PWM driven for varying intensity).

    There are 3 miniature push button switches on the PCB, tied to RB4, RB5, and RB6.

    There are provisions on the PCB for 4 LEDs (not mounted), each under software control with PWM capability for brightness.

    A 6 pin RJ45 footprint is included to attach the PCB to an ICD2 for programming and/or debugging. The connector is not included, but is available from Digikey.

    The are two miniature connectors on the board: a 4 pin connector that supplies power and supports EUSART communication (TX/RX only, no hardware handshaking). Also, a 3 pin connector that provides regulated 5VDC from the PCB and makes a connection available to RB2/INT2.

    RB3 is connected to an on board test point.

    The boards are about 4.4" x 2.5" x 0.75", and the LCD stands off the surface to about 1/2" total height. There are 4 mounting holes in the corners for #6 screws.

    User must provide power between 8 and 12V. The current requirements are minimal, except for the LCD backlight.

    No programming will be included, but I will provide schematics, and I can help through this forum (I do not have the time to provide individual private help).

    I can the let boards go for $40 each (with the PIC18F2321) or $45 (with the PIC18F2420). Supplies are limited, first come first served. I don't have all stock here at my location, so I can advise when material would be available.

    The PCBs are 100% functionally tested.

    I can supply photos, if someone tells me how.

    Any interest?
     
  2. joeyd999

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    Here are the photos (hope this works!)
     
  3. spinnaker

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    Yikes $45! A $6 display and $4-$5 PIC. Excellent work on the PCB so that is probably worth something, the connectors are a nice feature but most folks here can make their own. Plus it is a lot more fun to build your own So don't be surprised if you don't find any takers.
     
  4. spinnaker

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    Last edited: Dec 8, 2011
  5. joeyd999

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    These are boards I've got laying around...doing nothing. I just thought I'd make the offer in case anyone wanted a quick display solution. The LCD is 2x16 with a backlight, dissimilar to the link you provided.

    FYI, I'm not really here to sell anything. I just made the offer because I thought there might be interest.

    I would entertain counter-offers.
     
  6. thatoneguy

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    Doesn't look like all I/O is accessible, such as PORTC (LCD), PortB, PortA, I suppose they can be reached with careful soldering of wire-wrap wire on the pins.

    The onboard regulator is nice, so is the LCD connector, and I understand the cost of short run PCBs, but $40 is a bit steep for what usable lines are available.

    Do you haggle?
     
  7. spinnaker

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    Actually very similar if not more capable. I looked at my link again and it does seems to only be a normal LCD and not graphic.

    It is similar to yours except the one in my link does not have a backlight. Which is sometimes good and sometimes bad.

    You might want to consider a pricepoint somewhere between $15-$20.
     
  8. joeyd999

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    Yes, as I said, I will entertain offers. I've got about 150 of these boards...quantity helps!

    FYI, this PCB was designed to be a display/controller PCB for a master PCB that connected to it via the serial lines. It is what it is...and it works very well. There are about 500 of these in the field.
     
  9. spinnaker

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    The connector for the LCD looks very interesting. Nice low profile. Do you happen to know the type of connector?
     
  10. joeyd999

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    J103 Conn, Header, 4POS, R/A 2mm Tin JST S04B-PASK-2(LF)(SN) Digikey 455-1849-ND

    J104 Conn, Header, 3POS, R/A 2mm Tin JST S03B-PASK-2(LF)(SN) Digikey 455-1848-ND
     
  11. spinnaker

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    Thanks but I meant the 16 position one for the LCD.
     
  12. joeyd999

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    J102 Conn, Receptical, 16POS, Tin 0 Hirose MDF7-16S-2.54DSA(55) Digikey H10665-ND
     
  13. thatoneguy

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    The Voltage regulator on board.

    What is the current capability of it, and is the PIC running at 5V or 3.3V?
     
  14. joeyd999

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    U103 IC, Volt Reg, 5V 100mA 8-SOIC Natiional Semi LM78L05ACMX/NOPB Digikey LM78L05ACMXCT-ND

    Pic runs 5V.
     
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