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Prop II ProtoBoard — Parallax Forums

Prop II ProtoBoard

John AbshierJohn Abshier Posts: 1,116
edited 2009-12-02 21:13 in Propeller 1
I know that I am not going to solder a Prop II and will need a board from someone.· A proposed design:

IO will be in groups of 8x3, signal, power, and ground with 0.1 inch spacing.· The user can solder in male pins or female sockets.· Four groups would be 3.3 volts IO and power.· Three groups would be 5 volt IO and selectable 5 volt/Vin power.

The last 8 IO are for program download/EEPROM/wireless IO.· If the EEPROM is I2C, please put a pullup on both data and clock.· Bring out the I2C lines to a 5x4 area, clock, data, 3.3 volts and ground.· The last 4 pins in this group would go to a XBee header.

If necessary to save money, replace the XBee header with 4 LED's and make all of the IO 3.3 volt.

Mounting holes for 4x40 or 6x32 screws/standoffs.

Healthy power supplies since one may add lots of sensors/etc. to a board with 64 IO.

John Abshier

Comments

  • LeonLeon Posts: 7,620
    edited 2009-12-02 17:30
    I don't see why anyone should have any problems soldering a Propeller II, if they have the right equipment and have some experience with fine-pitch devices.

    Leon

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    Amateur radio callsign: G1HSM
  • CounterRotatingPropsCounterRotatingProps Posts: 1,132
    edited 2009-12-02 18:05
    ummm ... I must have been asleep at the wheel ... where did the PropII pin layout get posted? (Or am I just revealing my (true) lack of knowledge here [noparse]:)[/noparse]

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  • LeonLeon Posts: 7,620
    edited 2009-12-02 18:44
    If John sends me a couple of chips I'll design his PCB for him, get a couple made and built, and let him have one for nothing.

    Leon

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    Amateur radio callsign: G1HSM

    Post Edited (Leon) : 12/2/2009 6:50:21 PM GMT
  • John AbshierJohn Abshier Posts: 1,116
    edited 2009-12-02 19:11
    Leon, I don't have the right equipment (although that is easily fixed) or the experience (a much harder fix).

    John Abshier
  • Nick MuellerNick Mueller Posts: 815
    edited 2009-12-02 19:28
    Well, you know that a PCB that is a year old is harder to solder? smile.gif


    Nick

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    Never use force, just go for a bigger hammer!

    The DIY Digital-Readout for mills, lathes etc.:
    YADRO
  • LeonLeon Posts: 7,620
    edited 2009-12-02 20:27
    John:

    Get yourself a good solder station (I can recommend Metcal, they aren't expensive if bought second-hand) and try one of those SMD kits that are available. You should pick it up quite quickly.

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    Amateur radio callsign: G1HSM
  • mctriviamctrivia Posts: 3,772
    edited 2009-12-02 21:13
    There will be breakouts to. I plan to use a qip80 package about the size of current dip prop. Will use port c for ram and sd

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    24 bit LCD Breakout Board now in. $21.99 has backlight driver and touch sensitive decoder.
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