Watch Dog Timer v1.0
Arduino_WDT_Board

Concept

To reset the Arduino when it frezzes due to Internet or Code error.

How it works

The Arduino is programed to send a signal to the WDT during each loop. If The WDT does not get a signal from the Arduino within approx 120 sec, it resets the Arduino.
Schematic
AHACB_v2_1-Schematic
PCB
AHACB_v2_1-PCB
BOM
ID Part Qty.
1 1 M Resistor 1
2 220k Resistor 1
3 560k Resistor 1
4 100u Capacitor 1
5 10nf Capacitor 1
6 1N4148 Diode 1
7 NE555 Timer 1
8 4-Pin Header 1
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