attiny85

Attiny85 shcematic/pcb design with example app

• Schematic and PCB in Eagle format

• Example app is a dual channel a/d convertor

• Avrdude command line

  • sudo /usr/local/avr/bin/avrdude -c usbtiny -p t85 -V -U flash:w:analogSpi.hex

• Avrdude fuse settings

  • sudo /usr/local/avr/bin/avrdude -c usbtiny -p t85 -V -U lfuse:w:0xe1:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m

• The vusbtiny application is a usb bootloader and used to program the attiny device

  • The purpose of this application was to use the design I made and create a usbtiny programmer for all my attiny projects

  • Updated the usbdrv.c and usbconfig.h file to configure the port assigments to match the pcb design

• Avrdude command line

  • sudo /usr/local/avr/bin/avrdude -c usbtiny -p t85 -V -U flash:w:vusbtiny.hex

• Avrdude fuse settings

• sudo /usr/local/avr/bin/avrdude -c usbtiny -p t45 -V -U lfuse:w:0xe1:m -U hfuse:w:0x5d:m -U efuse:w:0xff:m