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Re: New "Forth" MCU Board, ChipStick

From Paul Rubin <no.email@nospam.invalid>
Newsgroups comp.lang.forth
Subject Re: New "Forth" MCU Board, ChipStick
Date 2016-04-02 23:08 -0700
Organization A noiseless patient Spider
Message-ID <87y48vql51.fsf@nightsong.com> (permalink)
References (10 earlier) <ab27ccfd-afa1-4f89-b055-f22973503669@googlegroups.com> <ndojvl$54v$1@dont-email.me> <c39e30dd-0b92-4f0a-b1bf-c141f73ec751@googlegroups.com> <8737r3sloc.fsf@nightsong.com> <092057c0-e91f-49cf-8d69-506df8d03b1d@googlegroups.com>

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Raimond Dragomir <raimond.dragomir@gmail.com> writes:
> $1.5 sounds expensive. I know a cortex-m0 chip with 64K flash and 8K ram
> in LQFP48 which is $1 qty1000 and $0.8 qty2500. A 4Mbit (512KB) serial flash
> is $0.25 1000+. PCB + some other components (with a micro-usb connector...
> There are cheaper MCUs with only 4K ram, but this sounds too limiting for 
> a forth system. The most limiting factor here is the RAM, it's hard to get
> low prices for higher ram MCUs. But 8K seems quite ok.

If you can compile to flash, 4k ram doesn't seem that bad.  The
msp430g2553 has 256 bytes, fwiw.  And the Atmega328 found in zillions of
arduinos has 2.5k.  But yeah, with that SPI flash, you want some block
buffers, so 8k is better.

An usb interface like the Digispark's (the card plugs directly into a
USB port, no connector) is probably cheaper than a micro usb.  Photo:

  http://digistump.com/products/1

I have to admit puzzlement about the use cases for the board.  That
seems worth discussing in its own right.  Most applications that
interest me (though that's just me) need RTC which means a crystal
adding cost.  Maybe that could be optional.  Built-in lipo charger is
also nice--more cost.  Etc.

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Thread

New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-03-30 21:39 -0400
  Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-30 18:52 -0700
  Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-30 20:31 -0700
  Re: New "Forth" MCU Board, ChipStick JUERGEN <epldfpga@aol.com> - 2016-03-30 23:41 -0700
    Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 00:37 -0700
      Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-03-31 14:36 -0400
        Re: New "Forth" MCU Board, ChipStick JUERGEN <epldfpga@aol.com> - 2016-04-01 00:42 -0700
          Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-01 13:09 -0400
            Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@spenarnc.xs4all.nl> - 2016-04-01 23:43 +0000
              Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-04-01 17:28 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@spenarnc.xs4all.nl> - 2016-04-02 12:10 +0000
      Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-03-31 17:07 -0500
        Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@spenarnc.xs4all.nl> - 2016-03-31 23:59 +0000
        Re: New "Forth" MCU Board, ChipStick JUERGEN <epldfpga@aol.com> - 2016-04-01 00:52 -0700
          Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-04-01 12:47 -0500
    Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-31 18:54 -0700
      Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-03-31 22:08 -0400
        Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-31 19:36 -0700
          Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-03-31 23:28 -0400
            Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-31 22:32 -0700
              Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-01 02:39 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-01 04:42 -0700
                Re: New "Forth" MCU Board, ChipStick josv@planet.nl - 2016-04-01 04:48 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-01 05:50 -0700
                Re: New "Forth" MCU Board, ChipStick anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-04-01 13:35 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-01 13:11 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-02 01:58 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-02 10:15 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-02 08:02 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-02 12:39 -0400
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-02 12:54 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-02 15:14 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-02 22:14 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-02 23:08 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-03 02:11 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-03 22:54 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-04 02:50 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-04 16:37 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-04 23:15 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 02:21 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 00:01 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 03:17 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 01:15 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 12:50 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-04 23:21 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 02:29 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 00:02 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-05 02:07 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 13:12 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 00:12 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 03:22 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 01:22 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-05 02:12 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 13:15 -0400
                Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-04-05 17:14 -0500
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-04 03:03 -0700
                Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-04-04 19:51 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-04 20:18 -0700
                Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-04-04 20:44 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-04 22:39 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 02:25 -0400
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-04 16:23 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-04 23:18 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 13:22 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-05 13:34 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-04-05 21:28 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-05 22:34 -0700
                Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-04-01 15:52 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-04-02 01:55 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-04 22:38 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-04 23:10 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-05 16:28 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-05 22:35 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-05 21:40 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-05 22:13 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-05 22:44 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-06 02:41 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-06 01:26 -0700
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-06 02:02 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-06 09:06 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-06 05:09 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-06 03:50 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-06 19:23 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-06 16:29 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-07 11:32 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-07 15:38 -0400
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-08 09:45 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-08 11:04 -0400
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-08 17:36 +0000
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-08 17:39 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-08 14:08 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-08 10:52 -0700
                Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-05-08 14:57 -0500
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-08 13:23 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-09 09:26 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-09 10:26 -0400
                Re: New "Forth" MCU Board, ChipStick Raimond Dragomir <raimond.dragomir@gmail.com> - 2016-05-09 09:38 -0700
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-09 12:58 -0400
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-09 22:53 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-09 22:41 -0400
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-09 11:08 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-09 13:21 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-09 23:39 +0000
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-09 19:03 -0700
                Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-05-09 21:44 -0700
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-10 08:28 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-10 12:34 -0400
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-10 22:27 +0000
                Re: New "Forth" MCU Board, ChipStick Albert van der Horst <albert@cherry.spenarnc.xs4all.nl> - 2016-05-09 09:16 +0000
                Re: New "Forth" MCU Board, ChipStick rickman <gnuarm@gmail.com> - 2016-05-08 14:01 -0400
            Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 23:26 -0700
      Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 19:09 -0700
        Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-03-31 21:41 -0500
          Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 23:10 -0700
            Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-04-01 12:37 -0500
              Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-04-01 15:35 -0700
                Re: New "Forth" MCU Board, ChipStick David Schultz <abuse@127.0.0.1> - 2016-04-01 18:11 -0500
        Re: New "Forth" MCU Board, ChipStick visualforth@rocketmail.com - 2016-03-31 19:47 -0700
          Re: New "Forth" MCU Board, ChipStick Paul Rubin <no.email@nospam.invalid> - 2016-03-31 23:23 -0700

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