Search found 3 matches

by nicoskaralis
Wed Jun 13, 2018 11:15 pm
Forum: Module Discussion
Topic: Watchdog timer output HIGH or LOW
Replies: 5
Views: 99

Re: Watchdog timer output HIGH or LOW

The 555 output will be high while the capacitor is charging (less than about 2/3 Vcc), only going low once it reaches that threshold. By pulsing the 'In' input you discharge the capacitor before it reaches the threshold, thus preventing the output from going low and resetting the Arduino (reset is ...
by nicoskaralis
Wed Jun 13, 2018 2:37 pm
Forum: Module Discussion
Topic: Watchdog timer output HIGH or LOW
Replies: 5
Views: 99

Re: Watchdog timer output HIGH or LOW

The 555 "object" is from the iCircuit library, I don't have the option to change its pins

The position of the pins might be off, but souldn't the output be the same?
In the schematics TR (2) and THR (6) are shorted so it wouldn't matter anyway. Right?
by nicoskaralis
Tue Jun 12, 2018 1:11 pm
Forum: Module Discussion
Topic: Watchdog timer output HIGH or LOW
Replies: 5
Views: 99

Watchdog timer output HIGH or LOW

I'm studding the 555 chip and I found this great project. I'm trying to understand how the watchdog timer works but I don't have a 555 chip right now so I'm using iCircuit for mac to simulate and debug the circuit I've understand how it works but in all my simulations the output (OUT pin that goes t...