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February 5, 2008
about 7 months ago
Adding a 10uF to GND on the reset pin fixes the problem. This seems like a bit of a band-aid though, since the SAMD21 includes a fairly sophisticated power-on reset of it’s own. I’m guessing there is something a bit funny going on in the startup code in the bootloader. Will look into it later when we attempt to customize it.
Love the board! We’re using a bunch of them in a project for a lab here.
We’d like to customize the bootloader as we have the boards on a shared serial bus and would like to be able to add some sort of addressing scheme.
I’d prefer not to buy IAR tools. I notice the stock Arduino Zero bootloader can be built with gcc/make. Can the customized sparkfun one be built successfully with open-source tools? Or, is there a list of patches against the Arduino Zero one?
We can sort this all out ourselves given time (and eager students) but if you guys have any suggestions it would be great.
The power-up reset doesn’t seem to work. Is this expected?
If we download a simple blinky light sketch it runs as expected if the USB cable is connected.
If we power the board using 5V on VIN the sketch doesn’t start unless the reset button is pressed.
about 4 years ago
I’m thinking of making this into an indoor/outdoor thermometer. Seems like a rather trivial task, since there are two spare ADC-capable pins. Anyone else tried this?
No public wish lists :(
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