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Johnny Come Lately uC — Parallax Forums

Johnny Come Lately uC

ercoerco Posts: 20,261
edited 2012-10-12 17:10 in General Discussion
Just saw this ARM on Ebay: The EZSBC1 is a single-board computer that runs the Control BASIC interpreter on its micro-controller: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=261082207161&ssPageName=ADME:B:BODO:US:1

Anybody know anything about 'em? http://embeddedcontroller.weebly.com/

Comments

  • TonyDTonyD Posts: 210
    edited 2012-10-08 02:46
    Small ARM boards are every where at the moment. Teensy3 is another one:

    http://www.pjrc.com/store/teensy3.html
  • Peter KG6LSEPeter KG6LSE Posts: 1,383
    edited 2012-10-08 07:12
    hmm the Lang is cute , On board USB is VERY usefull
    Programmed via on-board editor or program download in structured BASIC ..
    If Iam seeing this right to me this means the whole Desktop OS based program EG BST or what not is also stored ON the micon and can ran off it as a program?
    Only thing better then Free Software is SW you can't loose ......
    and 60 MHz is not too shabby

    its no Prop but shure is on par with that ...uno stuff
  • Heater.Heater. Posts: 21,230
    edited 2012-10-08 07:50
    Peter,

    The EZSBC1 with it's BASIC interpreter/editor is of historical interest only.
    Only thing better then Free Software is SW you can't loose

    Well except having spend hundreds of hours creating code for that thing you might suddenly find you cannot buy it any more. Oh dear, I have lost my software, wish I had targetted something open source and "free" instead.
  • skylightskylight Posts: 1,915
    edited 2012-10-08 07:57
    The EZSBC1 website page gives details such as consumption of 75ma but doesn't give info that I could see about what the I/O pins can drive safely or total drive current of the board.
    Any ideas what it may supply/sink?
  • LeonLeon Posts: 7,620
    edited 2012-10-08 08:22
    See the LPC2136 spec. on the NXP web site. It's only a couple of mA for all the pins, apart from one, IIRC.
  • skylightskylight Posts: 1,915
    edited 2012-10-08 10:12
    Thanks Leon
  • hover1hover1 Posts: 1,929
    edited 2012-10-08 10:38
    If I'm reading the Data Sheet correctly, page 26, Table 5 indicates 20ma for I2C sink current. Is that true for all pins?

    Can't find pin and total current in the data sheet right now.

    http://www.nxp.com/documents/data_sheet/LPC2131_32_34_36_38.pdf
  • skylightskylight Posts: 1,915
    edited 2012-10-08 10:43
    Yes agreed its not clear but from what I can understand it's TTL compatible and it does drive onboard LEDs so the 20ma may be correct? but safer to use some form of driver interface.
  • LeonLeon Posts: 7,620
    edited 2012-10-08 10:46
    See page 27 - 4 mA.
  • rod1963rod1963 Posts: 752
    edited 2012-10-08 10:57
    Not bad. I like the fact they put a nice BASIC on it, makes it easier for hobbyists to access this micro and the price is reasonable.

    Now we have all sorts of micros on that fit in a DIP format from ARMs to PIC32's and run BASIC.
  • ercoerco Posts: 20,261
    edited 2012-10-10 13:23
    I chatted with the inventor/seller through a few emails and he's sending me a sample for evaluation. My plans are to to test its floating point math & trig accuracy to do on-the-fly robot odometry for location tracking via dead reckoning.

    Like Joaquin Phoenix, Retrobot 2 will rise from the ashes! OK, there is no rising, there are no ashes, that just sounded too epic to pass up. But hey, if Retrobot 1's BS2 and integer math is this accurate: http://www.youtube.com/watch?v=PX0IhUqnwrk then imagine what this ARM unit might do!
  • ercoerco Posts: 20,261
    edited 2012-10-12 16:00
    A different prize came in the mail today, an evaluation EZSBC1 and project board. This guy had me at ... RELAY x4 !!! :)

    A new toy to play with. Err... I mean scientifically evaluate.
    ezsbc.jpg
    980 x 735 - 178K
  • mindrobotsmindrobots Posts: 6,506
    edited 2012-10-12 16:42
    Ahhhh, the pitter patter of little contacts sounding through the erco house into the wee hours of the morning...kinda brings tear to the eye!
  • PublisonPublison Posts: 12,366
    edited 2012-10-12 17:10
    erco wrote: »
    A different prize came in the mail today, an evaluation EZSBC1 and project board. This guy had me at ... RELAY x4 !!! :)

    A new toy to play with. Err... I mean scientifically evaluate.

    +1 on 4 relays. You can always mount it on a piece of scrap plywood and make it whole with the world.
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