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Arduino Hardware Reset Circuit PCB
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.
- 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
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|
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.
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.)
Solder the 555 timer and make sure that the dimple on the top of the IC goes to the right just like the outline on the PCB.
Solder the transistor as shown. The outline on the PCB should match up with the outline of the physical device as shown.
Solder the 0.01uF (aka 10nF) capacitor in the slot labeled 10nF. The polarity of this capacitor doesn't matter.
1 - Initial project release
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