Problem with USBtinyISP and ATTiny13

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

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strongdrink
 
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Problem with USBtinyISP and ATTiny13

Post by strongdrink »

Hello, I am running into some difficulties connecting to my ATTiny13 microcontroller with the USBtinyISP.
I get the error message...

Code: Select all

$ sudo avrdude -c usbtiny -p attiny13

avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.

avrdude done.  Thank you.
To my knowledge this means that the programmer works, but the IC is the problem...

Thanks

strongdrink
 
Posts: 5
Joined: Sat Oct 15, 2011 12:17 am

Re: Problem with USBtinyISP and ATTiny13

Post by strongdrink »

EDIT: I bought the programmer from adafruit

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adafruit_support_bill
 
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Re: Problem with USBtinyISP and ATTiny13

Post by adafruit_support_bill »

Could be the IC or the connection from the USBtinyISP. If you post photos of the front & back of the board we can take a look for any assembly issues on the USBtinyISP.

strongdrink
 
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Re: Problem with USBtinyISP and ATTiny13

Post by strongdrink »

Ok here are pictures.. the tutorial said something about using jumpers instead of certain resistors.. should I try bypassing the resistors?
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adafruit_support_bill
 
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Re: Problem with USBtinyISP and ATTiny13

Post by adafruit_support_bill »

Not really enough detail in those photos to see any potential build issues.

The resistors are mostly for programming SpokePOVs. You may want to bypass them with jumpers.

From the assembly instructions:
If you're not using the USBtiny to talk to a SpokePOV kit, and if you are using a target that has some load on the SCK and MOSI pins, you may need to replace R4 and R7 with jumpers as the 1.5K resistors will have trouble driving the load!


strongdrink
 
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Re: Problem with USBtinyISP and ATTiny13

Post by strongdrink »

bump

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adafruit_support_bill
 
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Re: Problem with USBtinyISP and ATTiny13

Post by adafruit_support_bill »

The solder-side photos are a little blurry, but it looks like some of the pins on the ICs are not soldered.

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