USBtinyISP

USBtinyISP

USBtinyISP with jumper removed

USBtinyISP with jumper removed

Supply voltage

If the target is a 3.3V device, it would be best to use a 3.3V compatible programmer, too. The USBtinyISP (since version 2) makes use of 3-state buffers for the signal lines, and has a jumper that can be removed to disconnect the 5V from the USB port from the target.

Parts and Schema

https://learn.adafruit.com/usbtinyisp/parts-list

Schema of the USBtinyISP

Schema of the USBtinyISP

Using the programmer

AVRDUDE is a very popular command-line program for programming AVR chips. Avrdude version 5.5 and higher has built-in support for USBtinyISP!

https://learn.adafruit.com/usbtinyisp/avrdude

avrdude knows this programmer as usbtiny

Tags: domotica tools
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