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Dev board 1

Program fuses using AtmelStudio and Olimex AVR-ISP500 - STK500 programmer.

External clock output on ICSP10 pin 3 for rescuing AVRs with enabled external clock fuse; This clock output can be really helpful when target AVR is accidentally programmed with External Clock FUSE option. To resurrect it just wire ICSP10 pin 3 to XTAL1 pin of the target AVR chip and initiate a programming session to fix the FUSE values.

Power from external battery.

Setting	Default	Set
BODLEVEL	Disabled	Disabled
RSTDISBL	Clr	Clr
DWEN	Clr	Clr
SPIEN	Set	Set
WDTON	Clr	Clr
EESAVE	Clr	Clr
BOOTSZ	2048W_3800	2048W_3800
BOOTRST	Clr	Clr
CKDIV8	Set	Clr
CKOUT	Clr	Clr
SUT_CKSEL	INTRCOSC_8Mhz_6ck_14ck_65ms

Setting	Default	Set
Extended	0xFF
High	0xD9
Low	0x62

ToDo

Explore WatchDog Timer and set fuse WDTON - “Watchdog Timer Always On” -

http://tushev.org/electronics/arduino/item/46-arduino-and-watchdog-timer

http://www.jasoncavett.com/2011/03/accessing-watchdog-timer-on-arduino-uno.html