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Arduino Hardware Reset Circuit PCB

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Arduino Hardware Reset Circuit PCB

7bece8c1efa36b50bbfe804f08cc477cf6653652

By: kurt

This circuit uses one pin to let you reset your Arduino in code. It pulls reset high for a couple milliseconds to ensure the Arduino has enough time to complete its reset cycle. This circuit is similar to Arduino Hardware Reset Circuit Breadboard, but it uses a PCB and requires soldering skills to assemble.

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Files

Arduino_Reset.pde - Arduino Reset Sketch
ArduinoReset.sch - Arduino Reset EAGLE Schematic
ArduinoReset.brd - Arduino Reset EAGLE Board
Arduino Reset V1.zip - Arduino Reset GERBER

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Bill of Materials

Qty	Part #	Description	Schematic ID	Source
1	NE555P	TIMER SINGLE PRECISION,DIP8 ,0.5MHZ	IC1	Source
2	CF14JT10K0	1/4w 10K ohms 5% Carbon Film Resistors	R1, R2	Source
1	CF14JT1K00	1/4w 1K ohms 5% Carbon Film Resistors	R3	Source
1	CF14JT100R	1/4w 100 ohms 5% Carbon Film Resistors	R4	Source
1	2N3904BU	TRANSISTOR, NPN 200MA TO-92	Q1	Source
1	SK4R7M050ST	CAPACITOR ALUM ELECT 4.7UF, 50V, RADIAL	C1	Source
1	SR215C103KAR	CAPACITOR, 0.01UF, 50V	C2	Source
1	TSW-150-07-T-S	CONN HEADER 50POS .100" SNGL TIN		Source
1	SSA-132-S-T	CONN RCPT .100" 32POS TIN PCB		Source

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Download BOM w/ images

Steps

1. Gather Parts

Make sure you have all the parts listed in the parts list. The parts in this project don't exactly match the parts printed on the PCB. The parts printed on the PCB can be used, but they look different than the parts used in these instructions.

2. Solder Resistors

Solder the resistors in place as shown. From left-to-right, the resistors are 10k, 1k, 10k, and 100 ohm. You could also use resistors and capacitors that have the same values as what is printed on the PCB. (The last resistor is propped up funny because I used a larger resistor than the PCB was designed to hold. This won't affect the device's performance.)