USBtinyISP V2.0 Bulding today need help

USB AVR Programmer and SPI interface. Adafruit's USBtinyISP.

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squeed
 
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Joined: Fri Jan 11, 2008 11:12 pm

USBtinyISP V2.0 Bulding today need help

Post by squeed »

I followed the link on the package but the instructions just show you how to make the cable and assume that the board is already soldered together. Are there instructions somewhere for what goes where ?

I am a beginner and don't really know how to read the resistor values, I found an online color chart that helps, but it would be helpful if there were detailed instructions somewhere.

-S

Entropy
 
Posts: 472
Joined: Tue Jan 08, 2008 12:43 am

Post by Entropy »

Other than the buffer IC, they're 95%+ identical to the v1.0 instructions

Tip I've found: For the electrolytic capacitor right next to the buffer IC, give it somewhat long leads so the bottom of the can is just above the IC. Otherwise, the can will have to be angled away from the IC to fit (the IC is slightly larger than its silkscreen outline) - If the can is angled, it will cause fitting problems for the red LED.

adafruit
 
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Re: USBtinyISP V2.0 Bulding today need help

Post by adafruit »

squeed wrote:I followed the link on the package but the instructions just show you how to make the cable and assume that the board is already soldered together. Are there instructions somewhere for what goes where ?
sadly my camera got smooshed just before i was about to put up the instructions for how to built the usbtiny v2
but you can use the v1 instructions for now, and then solder in the extra chip
http://www.ladyada.net/make/usbtinyisp/solder-v10.html

"Instructions coming soon! (until I have them up, just follow the v1.0 instructions and solder in the 74AHC125 in the correct location, making sure the notch in the chip matches the notch on the PCB silkscreen)"
I am a beginner and don't really know how to read the resistor values, I found an online color chart that helps, but it would be helpful if there were detailed instructions somewhere.
the resistor codes are spelled out on
http://www.ladyada.net/make/usbtinyisp/parts.html
but you may also want to use a multimeter if you're not 100% on reading resistor codes!
http://www.ladyada.net/learn/multimeter/resistance.html

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