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http://www.nongnu.org/avr-libc/user-manual/ http://www.nongnu.org/avr-libc/user-manual/ This is a slightly sarcastic point. I find the Arduino programming env

http://www.nongnu.org/avr-libc/user-manual/ http://www.nongnu.org/avr-libc/user-manual/ This is a slightly sarcastic point. I find the Arduino programming environment is horrible. I had to revert to straight-up C in the end and use the Arduino as a convenient ICSP package.

joshvm 12y ago
My preferred platform is a Sparkfun Pro Micro (or clone) with the DFU bootloader on it. Just the right number of pins for most projects and programmable with a common micro-USB cable. Tried to poke around with Arduino, but I like using my own libraries.
- monstermonster 12y ago
  That looks like a pretty nice platform. I may have to grab one to play with.
  - joshvm 12y ago
    I went with a clone because they're about £4/$6 and that seemed like a no brainer. I haven't had any duds yet! They only come in the 5V option from what I've seen, but it's simple enough to swap out the crystal and the regulator to make it a 3.3V/8MHz. Only issue I had was to modify the LUFA DFU bootloader to automatically start the micro if there isn't a programming request within 5 seconds. The default code will sit in the bootloader forever until something happens - fine for prototyping, but a problem if you have it in a semi-permanent place and the power goes.
    - monstermonster 12y ago
      Thanks for the info. Where do you get them at £4 a pop? Not worried about the bootloader problems as these would be prototype only and the voltage is ok as I'm replacing a PLC implementation with some homebrew kit so it's just switching relays and reading opto-isolated inputs, neither which are voltage sensitive.
      - joshvm 12y ago
        http://www.ebay.co.uk/itm/Hot-New-Pro-Micro-5V-16MHz-ATMega-32U4-Module-with-2-row-pin-header-For-Leonardo-/400514883558 http://www.ebay.co.uk/itm/Hot-New-Pro-Micro-5V-16MHz-ATMega-... You'll be waiting a while for shipping, so I'd recommend ordering a few ;)
        monstermonster 12y ago
        Perfect - thanks :) Ordered loads of stuff from HK so know about the wait. Have usually forgotten about it by the time it arrives!

joshvm 12y ago

My preferred platform is a Sparkfun Pro Micro (or clone) with the DFU bootloader on it. Just the right number of pins for most projects and programmable with a common micro-USB cable. Tried to poke around with Arduino, but I like using my own libraries.

monstermonster 12y ago
That looks like a pretty nice platform. I may have to grab one to play with.
- joshvm 12y ago
  I went with a clone because they're about £4/$6 and that seemed like a no brainer. I haven't had any duds yet! They only come in the 5V option from what I've seen, but it's simple enough to swap out the crystal and the regulator to make it a 3.3V/8MHz. Only issue I had was to modify the LUFA DFU bootloader to automatically start the micro if there isn't a programming request within 5 seconds. The default code will sit in the bootloader forever until something happens - fine for prototyping, but a problem if you have it in a semi-permanent place and the power goes.
  - monstermonster 12y ago
    Thanks for the info. Where do you get them at £4 a pop? Not worried about the bootloader problems as these would be prototype only and the voltage is ok as I'm replacing a PLC implementation with some homebrew kit so it's just switching relays and reading opto-isolated inputs, neither which are voltage sensitive.
    - joshvm 12y ago
      http://www.ebay.co.uk/itm/Hot-New-Pro-Micro-5V-16MHz-ATMega-32U4-Module-with-2-row-pin-header-For-Leonardo-/400514883558 http://www.ebay.co.uk/itm/Hot-New-Pro-Micro-5V-16MHz-ATMega-... You'll be waiting a while for shipping, so I'd recommend ordering a few ;)
      - monstermonster 12y ago
        Perfect - thanks :) Ordered loads of stuff from HK so know about the wait. Have usually forgotten about it by the time it arrives!