makomk

Member Since: February 4, 2010

Country: United States

  • Product DEV-12720 | about 3 months ago

    The clock speed’s actually misleading, though. Although it runs at a higher clock speed than most Cortex-M3 and M4 boards, many common arithmetic operations take far more clock cycles than on Cortex-M3/M4. For example, on paper the Galileo is actually slower at integer multiplication than the Arduino Due - it’s one clock cycle at 84 MHz on the Due, but between 5 and 12 cycles at 400 MHz on the Galileo depending on the values being multiplied. Bit shifts, rotates, and integer division all take several times as many clock cycles on Galileo too. The Due doesn’t have hardware floating point, but the Cortex-M4F boards that do (like the STM32F4DISCOVERY) apparently beat it even more comprehensively and spectacularly at floating point operations. I expect Cortex-A series SoC are even more impressive.

    This is essentially a slightly improved 486. Intel are using 1989-era CISC technology to try and compete with 2010-era RISC, and it’s working about as well as you’d expect

  • News - New Product Friday: Galil… | about 3 months ago

    From what I recall, the Intel Galileo is actually closer to a hybrid between a 486 and a first-generation Pentium processor than it is to the Atom processors you’re comparing it to. In particular, it has no support for any of the newer instruction sets like MMX, SSE, or SSE2 - a lot of modern software expects these, especially the kind of x86-only or tuned-for-x86 code that might otherwise give this an advantage over ARM platforms.

  • Product DEV-11712 | about a year ago

    Ah, right - are you using the resistive touch panel controller for the other 4 ADC channels then? Only just noticed that the A10 user guide mentioned it could be configured as standalone ADC.

  • Product DEV-11712 | about a year ago

    Anyone thinking of buying should bear in mind that, unless I’m mistaken, the ADCs are a lot slower and lower-resolution than the ones on the Arduino - 6 bits and 250 Hz sampling rate max (no, that’s not a typo). Probably OK for reading a potentiometer or maybe monitoring battery levels if you don’t care much about resolution but not much use for faster or higher-precision applications.

  • Product DEV-11712 | about a year ago

    Livesuit and PhoenixCard are different programs for loading an operating system image into the onboard Flash. They both have to be run on a normal PC, and if I’m remembering correctly Livesuit requires you to connect the board over USB whereas PhoenixCard writes an SD card you can use to load the OS on. (I’ve got a Cubieboard which uses the same hardware and software.)

  • News - Modkit Micro | about 2 years ago

    It appears to be closed source and available either as a free-as-in-beer cloud web application or a paid commercial desktop application with a per-seat licensing fee, as far as I can tell.

  • News - A New Product Post Cramme… | about 3 years ago

    Interesting, guessing you’ve discontinued making the XMOS XS1-L1-64 Development Board then? (There aren’t that many modern microcontrollers that need a reset controller like the NCP303, and that’s apparently the one that XMOS use in their reference designs.)

  • News - Another Box Full of New P… | about 3 years ago

    I’ve noticed there’s a lot of stuff listed as “soldering paste” on sites like DealExtreme that obviously isn’t just from looking at the pictures, and it generally looks quite similar to that. So whatever kind of mislabelling it is, it’s a common one…

  • News - OSHW Logo | about 3 years ago

    Perhaps ironically, the Teensy clones are probably more open than the Teensy itself. Teensy famously uses a proprietary bootloader for which not even the binary is available. (Meaning that, amongst other things, if you start off prototyping using it and then build a custom board you have to use a different bootloader speaking a different protocol on your own board. This may also require changes to your code.)
    The Teensy clones apparently use the standard Atmel bootloader. That’s publicly available, fully documented, and and there’s an 100% compatible open source equivalent.
    I bought a genuine Minimus AVR 32 rather than the Teensy partly because of this, though also because of the cost of shipping from the US.

  • Product COM-09631 | about 4 years ago

    Probably really not the chip you’d want to use for this. Unless I’m entirely mistaken, you need some kind of hardware-ish USB controller in order to make use of this USB PHY - most likely created using either an FPGA or one of the new XMOS processors.

No public wish lists :(