Arduino Kits

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HC-SR04 ULTRASONIC RANGE SENSOR

How to set up the Hc-SRO4 Ultrasonic Range Sensor 

I got 2 of these a week ago there great but there not much on how to set them up so I figured I share how I did it.

First off you have to wire it up which from what I have read people was doing it wrong more then once. So here is how I got it to work .

I added the serial file so you can use the Serial Monitor to get reading in cm. The zip file has all you need to get this work.

Pin 9 is used for trig pin 10 is used for echo. Vcc to 5 volt pin on the arduino. And gnd to gnd on the arduino.

Here a picture to make it easy Great little range finder at great price 

The files you need to add to the arduino ide are here 

http://sites.google.com/site/be80be/be80be-pic-ing-howto-s/hc-sr04-ultrasonic-range-sensor/HCSR4DemoArduino.zip?attredirects=0&d=1

 

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Mailbox Alert

This is a simple two transistor latching switch that turns on a 555 timer circuit to flash an led.  The entire circuit including the battery pack fits perfectly inside an Altoids tin.  I mounted the tin in the back of the mailbox with the reset switch and led mounted thru the back of the mailbox.  The triger wires were siliconed to the top inside of the mailbox with the trigger switch attached to the inside front against the mailbox door.  When the door is closed, the door pushes against the lever on the switch and opens the trigger switch.  When the door is opened, the switch closes and trigers the circuit.  The circuit can be trigered over and over without reseting the circuit.  With the door closed and the reset switch puished, the circuit returns to the standby state.  The current draw in the standby state is only a few microamps so battery life will be long.

It's cheap, simple and could serve many purposes.

Attached are pics of project, circuit and parts list.

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Modular PSU

This is a simple power supply with little distribution board, which gives you +/-12 (or even 15, if you want to) and +5 (optional). You can brake the board, if you want to place PSU and distr. board on distance. Also you can connect souces to CV and Gate buses. It is not very useful for most modern modules, but if you creating your own stuff, you can really improve commutation.

LM3x7 have to be on the heatsink, 7805 may be in thermal (not electrical) contact with ground plane.



Q
NAME
VALUE
Link




2
3296W
10k
http://www.taydaelectronics.com/potentiometer-variable-resistors...


2
RES
1k
http://www.taydaelectronics.com/resistors/1-4w-metal-film-resistors...


3
RES
100k
http://www.taydaelectronics.com/resistors/1-2w-metal-film-resistors...


2
CAP
100n
http://www.taydaelectronics.com/capacitors/polyester-film-box-type...


4
POLCAP
10u
http://www.taydaelectronics.com/capacitors/electrolytic...


2
POLCAP
470u
http://www.taydaelectronics.com/capacitors/electrolytic...


2
POLCAP
4700u
http://www.taydaelectronics.com/capacitors/electrolytic...


9
DIODE
1n400x
http://www.taydaelectronics.com/diodes/standard/1n400...


3
LED
 
http://www.taydaelectronics.com/leds/round-leds/5mm-leds..


4
HDR-1x3
 
http://www.taydaelectronics.com/connectors-sockets/terminal-blocks...


6
HDR-2x8
 
http://www.taydaelectronics.com/connectors-sockets/box-header...


1
LM317
 
http://www.taydaelectronics.com/lm317t-lm317-voltage-regulator..


1
LM337
 
http://www.taydaelectronics.com/lm337-lm337t...


1
LM7805
 
http://www.taydaelectronics.com/lm7805-l7805-7805..
 

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Parola for Arduino

Discussion for the Parola, a modular scrolling text display using MAX7219/21 LED matrix display controllers.

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RGB Version? by KirAsh4 over 3 years ago
3 9 86
Sunn O))) Distortion

Effect type

Power amp distortion

Pedal description

A simple distortion pedal based on the legandary "Sunn Model T" amplifier. Very-very loud and the best partner for doom, sludge and stoner music!

Controls

Level: controls the output level

Kit contents

IC
2x    LM386
Capacitors
1x    100uF
2x    10uF
1x    1uF
1x    4.7nF
Resistors
1x    1M
1x    68k
Diodes
1x    4001
Hardwares
1x    1590B enclosure

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VibroPunk Sequencer

 

VibroPunk Sequencer

 

 

This is an intermediate level electronics project. You have to be able to read a schematic and transfer it into real world components and connections. There is no premade circuit board, it uses a blank experimenters circuit board which you have to lay out yourself using the schematics and my pictures. You also need decent soldering skills. That said, it's not too hard if you take it one connection at a time and double check your work. If you can read a schematic and solder, you can build this.

Let's look at the parts list...

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