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mhopeng · 06-28-2009, 05:56 PM

I bought and assembled a Spiffie v2.1 MPGuino kit, and it doesn't seem to work. Any thoughts or feedback would be appreciated!

1) If I connect to the board with USB, nothing happens until I load the sketch to the board. Then, the display lights up and the program is running.

2) If I connect with external power (either wallwart USB or wallwart RJ11), nothing happens.

3) I poked around with the multimeter, everything seems to be connected/not shorted. However, the output from the voltage regulator seems to be at 4.3-4.5 V. Is that unusually low?

4) Also, the input to the voltage regulator is at only 2.5 V when using USB power. That seems weird.

5) I assume that the program should load and start automatically when power is applied. Is this true? Is there a "start" or "reset" command that needs to be applied?

Thanks!!

06-28-2009, 05:56 PM	#1 (permalink)
mhopeng MPGuino Newbie Join Date: Jun 2009 Location: San Francisco Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts	Troubeshooting a new board I bought and assembled a Spiffie v2.1 MPGuino kit, and it doesn't seem to work. Any thoughts or feedback would be appreciated! 1) If I connect to the board with USB, nothing happens until I load the sketch to the board. Then, the display lights up and the program is running. 2) If I connect with external power (either wallwart USB or wallwart RJ11), nothing happens. 3) I poked around with the multimeter, everything seems to be connected/not shorted. However, the output from the voltage regulator seems to be at 4.3-4.5 V. Is that unusually low? 4) Also, the input to the voltage regulator is at only 2.5 V when using USB power. That seems weird. 5) I assume that the program should load and start automatically when power is applied. Is this true? Is there a "start" or "reset" command that needs to be applied? Thanks!!