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P2 has wings — Parallax Forums

P2 has wings

TonyDTonyD Posts: 210
in Propeller 2
Every propeller needs its wings ...

I've had my P2 eval board for a while and to get things going I put together these two prototyping boards for the P2 eval board to help me in my future developments.

The first, on the left of the photo, is a breadboard solution with the addition of some LED's and push-buttons to make circuit prototyping a little easier. The other, on the right of the picture, is a simple prototype board, allowing any circuit builds to happen here.
P2ES_PrototypingWings_sm.jpg
3232 x 2098 - 586K

Comments

  • VonSzarvasVonSzarvas Posts: 3,450
    Very nicely done.

    Not just the PCB's, but the fixing board with supporting standoffs for the accessory boards too. Thanks for sharing.
  • TubularTubular Posts: 4,702
    I agree, nicely done Tony
    So much prototyping space...
  • PublisonPublison Posts: 12,366
    Looks like Solar Panels. :)

    Nice one Tony!
  • ElectrodudeElectrodude Posts: 1,657
    Nice! Will you be offering them for sale, or will you make the design files available?
  • JRoarkJRoark Posts: 1,215
    I second Electrodude’s request. I think the educators in the room would love to have something like this for hands-on learning. Students could build and debug on the breadboard, then transfer the design over to the PCB for the grade.
  • ElectrodudeElectrodude Posts: 1,657
    I took one of Parallax's #64005-ES protoboards, soldered headers into it, and stuck one of the small Board of Education breadboards on the prototyping area snugly between the headers, and it works rather nicely and is very convenient, but it's small. A large double-width one like this would be much better.
  • JonnyMacJonnyMac Posts: 9,104
    Neat. I designed an RS-485 module for the P2-ES that was going to be built by Parallax, but Ken informed me today that they're going another direction. I guess I will have to build the boards myself. Thankfully, I do enough with RS-485 to make it worthwhile.

    I do like the breadboard PCB, Tony. Are you going to make it available?

    It might help the community to release your BOM and dimensions so that we can make matching boards.
    jm_rs485_p2-es.png
    1920 x 1040 - 190K
  • doggiedocdoggiedoc Posts: 2,241
    Looks great Tony! Excellent work!
  • Bob Lawrence (VE1RLL)Bob Lawrence (VE1RLL) Posts: 1,720
    Interesting idea . Looks great!
  • RaymanRayman Posts: 14,646
    @TonyD Looks great!

    @JonnyMac I need to explore RS-485. I have a ~200 ft. RS-232 connection that works, but is way past allowed length...
    Found a RS-232 to RS-485 converter chip... Is that what you are doing? I think not as I only see 3 wire ports. Think you need 4+ground for full duplex...
  • JonnyMacJonnyMac Posts: 9,104
    I'm using half-duplex in that design, but there are full-duplex chips (I used one on the EFX-TEK HC-8+ controller). Have a look at the MAX489.
  • MicksterMickster Posts: 2,693
    I use the MAX491 for my DCS (distributed control system).
    This is RS-485/422, 4-wire, strictly command /response.

    Master's Tx is permanently enabled and the Rx is a shared response line.

    However, I am encouraged after recently discovering that the big industrial players have adopted BT, BLE, WiFi for plant control so I might be dropping the cabling completely (apart from power, obviously).

    DCS is the way to go, IMO :smile:
  • TonyDTonyD Posts: 210
    thanks for the kind words from everyone.

    I've a few spare pcb's and I'll put them up to tindie shortly.

    I'll add a link here when I've got them on Tindie
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