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Updates 2013 February 18
It's been a while, hasn't it? Well, that's ok because we've got a lot of updates to talk about. Most of these have been effective on the site fora couple weeks now. A few may or may not be active when this article gets posted, but they'll certainly be applied in the ...
Arduino Hardware Reset Circuit Breadboard
This circuit uses one pin to let you reset your Arduino in code. It pulls reset low for a couple milliseconds to ensure the Arduino has enough time to complete its reset cycle.
- ArduinoReset.sch - Arduino Reset EAGLE Schematic
- ArduinoReset.brd - Arduino Reset EAGLE Board
- Arduino Reset.zip - Arduino Reset Gerber
- Arduino_Reset.pde - Arduino Reset Example Sketch
Bill of Materials
|Qty||Part #||Description||Schematic ID||Source|
|1||NE555P||TIMER SINGLE PRECISION,DIP8 ,0.5MHZ||IC1||Source|
|1||CF14JT100R||1/4w 100 ohms 5% Carbon Film Resistors||R4||Source|
|1||CF14JT1K00||1/4w 1K ohms 5% Carbon Film Resistors||R3||Source|
|1||CF14JT10K0||1/4w 10K ohms 5% Carbon Film Resistors||R2||Source|
|1||CF14JT100K||AXIAL CARBON FILM RES 1/4W 100K OHMS 5% LF||R1||Source|
|1||EEA-GA1HR10||CAP ALUM 0.1UF 50V 20% RADIAL||C1||Source|
|1||SR215C103KAR||CAPACITOR, 0.01UF, 50V||C2||Source|
|1||2N3904BU||TRANSISTOR, NPN 200MA TO-92||Q1||Source|
Gather your parts. Note that the capacitors in the picture are actually a 10pF capacitor and a 100uF capacitor. It's recommended that you use 10nF and 0.1uF capacitors as shown in the schematic.
Insert the 555 timer in your breadboard. There is a small circular dent on the top of the chip that indicates pin 1. Make sure you put pin 1 on the top left side as shown.
Connect pins 4 and 8 of the IC to the +5V rail on the right side of the breadboard.
Connect pin 1 of the IC to the GND rail on the left side of the breadboard.
Place the 10nF capacitor between pin 5 of the IC and the ground rail. The value of this capacitor is not very important, and the circuit will probably still work without it.
7 - fixed steps 3 and 4
6 - fixed an error in the description
5 - fixed the text for the third step
4 - none
3 - changed name to indicate this project is built on a breadboard
2 - updated description
1 - Initial project release
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