Connections

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

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rc_flyer
 
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Connections

Post by rc_flyer »

How do you connect the USBtinyISP to an ATtiny?
I find beginner user how to's but no connection how to's.
I must not be up to the beginner level yet.

I have an ATtiny861A and a Arduino Uno and have tried numerous on line tutorials with no success for weeks.
Then I ordered a USBtinyISP, and soldered it together.
Now what to do?

Thanks for any help on this.

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adafruit_support_rick
 
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Re: Connections

Post by adafruit_support_rick »

This page shows a diagram for connecting to an ATtiny85. The pinouts will be different on an ATtiny861 - make sure you find the right pins for Vcc, GND, MISO, MOSI, SCLK, and RST
http://www.arvydas.co.uk/2012/09/using- ... -attiny85/

There is a small arrowhead embossed on the side of the 6-pin ribbon cable connector that indicates Pin 1. If will be near the red wire on the cable.

The pinout of the ATtiny861a are on page two of the datasheet:
http://www.atmel.com/images/doc8197.pdf

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rc_flyer
 
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Re: Connections

Post by rc_flyer »

Thanks Rick.
I am assuming that 1 = miso, 2 = vcc ext.

5 3 1 <--- miso red wire closest to arrow here
6 4 2 <--- vcc

That helps a lot.
Stan

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adafruit_support_rick
 
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Re: Connections

Post by adafruit_support_rick »

Yes.
For reference, here's the ICSP pinout:
ICSP pinout.png
ICSP pinout.png (9.88 KiB) Viewed 772 times

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