arduino:unofaq
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arduino:unofaq [2010/09/27 22:24] ladyada |
arduino:unofaq [2010/09/28 18:59] ladyada |
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| The code for the 8u2 is based on LUFA, Dean Cameras totally awesome USB-AVR library that has great examples and documentation. Its also completely open source. | The code for the 8u2 is based on LUFA, Dean Cameras totally awesome USB-AVR library that has great examples and documentation. Its also completely open source. | ||
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| + | ===== Can I get to the other pins on the 8u2? ===== | ||
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| + | In the Uno, no extra pins are brought out to headers. If you want to poke around with chips like the 8u2 we suggest using something like the Teensy! | ||
| ====== Whats with the crystals? ====== | ====== Whats with the crystals? ====== | ||
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| Arduino is now FCC certified! That means that the board by itself passes FCC certification for electromagnetic emissions. It does **not** mean that your project is FCC certified. The moment you change the Arduino, its no longer FCC certified (although we'd like some back-up documentation on this) | Arduino is now FCC certified! That means that the board by itself passes FCC certification for electromagnetic emissions. It does **not** mean that your project is FCC certified. The moment you change the Arduino, its no longer FCC certified (although we'd like some back-up documentation on this) | ||
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| + | {{:arduino:fcc.jpg|}} | ||
| It is also, still, CE certified for Europeans. | It is also, still, CE certified for Europeans. | ||
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| For more detailed information about the bootloader, such as source code, please visit the [[http://code.google.com/p/optiboot/|Optiboot]] project page. | For more detailed information about the bootloader, such as source code, please visit the [[http://code.google.com/p/optiboot/|Optiboot]] project page. | ||
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| + | ====== Why not just use the '8u2 as a programmer? ====== | ||
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| + | While it is possible that the 8u2 could act as a full ISP programmer there are a few reasons why its good that it isn't | ||
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| + | - Giving beginners access to a full ISP programmer will result in bricked chips. There's no risk of messing up the Arduino chip beyond recognition if its just being bootloaded | ||
| + | - Having the chip act only as a USB/serial passthrough simplifies the firmware so that the chip has only one function instead of having to have it do double duty as programmer -and- serial interface (think about it, its not easy) | ||
| + | - Backwards compatibility - the Arduino chips can still be programmed with FTDI breakout boards or cables, making it easy for people to breadboard or make clones. | ||
| ====== Are Shields still going to work? ====== | ====== Are Shields still going to work? ====== | ||
/home/ladyada/public_html/wiki/data/pages/arduino/unofaq.txt · Last modified: 2016/01/28 18:05 (external edit)
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