The Simplest Touch Switch

Introduction: The Simplest Touch Switch

About: I'm a techie and a DIYer , I'v been know to take junk and make it useful again , not to much I can't make or fix , I'v been taking things apart since I was 5 and started making and fixing things at 8 , I re…

HI THERE ,  I would like to say Hi to everyone here ,
I"M new to this site and this is my first ever inscrutable so bare with me , 
ok so lets get started , 
first things first the lest fun reading the legal stuff , 
here it goes , I'm am NOT in anyway responsible for any injuries or harm the you my inflict on your self ,
I may and may not own this idea just in case someone had this idea first ,
please take care when handling power tools , 
ok now that I said that we can get started ,

Step 1: The Simplest Touch Switch

ok here's what you are going to need so get your pen and pad ready ,

555 timer x1 ,
dip socket for 555 timer this is optional  ,
1.5 v led any color x1 ,
pcb board or bread your choice  ,
battery 3v / 4.5 ,
a small piece of aluminum  foil ,
Tools needed 
soldering gun 
lead free solder its a better for your health if there's no lead in it
glue gun is optional 

Step 2:

ok here's a schematic I made to make it easier and also here's a pinout I got online , 
were only going to need pin 1 -2 -3-8-6 the rest we do not need ,
fallow the schematic , 
led + to 3 out 
led - to 1 ground
8  to battery 
1 ground to battery's ground
2 to touch plate 
6 to touch plate 
now to make the touch plate take a piece of foil and connect  it to the wire ,
solder your wire's to the right connections and your done ,
you can make this anyway you like solder it or use a bread board ,

Step 3:

and now the test run , touch the touch plate that was connected to pin 2 to turn on ,
to turn off touch the touch plate that was connected to pin 6 ,
so there you have it a simple touch switch , 
you can use more leds if you want or try connecting motors or what ever makes you happy  ,

Thank you everyone  for viewing my project  and for giving the new guy a chance ,
and yes I have more project to come soon ,

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    Question 4 years ago

    I love this idea. Some questions: Will this work to power 3 leds 20mA 2-3v each (in parallel)? Is this practically feasible? Will it be sensitive to electrostatic discharge? Can I connect the touch wires to metal screws to make them into touch switches or do I have to use aluminium foil? Thanks.

    tech savvy
    tech savvy

    Answer 4 years ago

    Hi sorry for the extremely late reply email issues ,
    To answer your questions Yes you could use metal screws or what ever is conductive ,
    I used tin foil because it was cheap and it was what I had at the time,
    It should be able to power as many LEDs as you want,
    As long as you provide enough power for them all,
    As far as static discharge it could be sensitive , but I didn't have this issue


    6 years ago

    Thanks for posting!

    Do you think I could use a 12V input?

    tech savvy
    tech savvy

    Reply 6 years ago

    Your welcome GastónL8 ,
    The answer to your question is yes you can use 12v input ,
    It goes by your 555 timers max input ,
    Mine can handle 12v max some others can handle 16v max ,
    I would how ever make sure your current / amps are not to high ,
    I'v never tested mine above 2 amps before ,

    Hope this help answer your question
    Best Regards Tech savy


    9 years ago on Introduction

    how to connect this simple touch switch with arduino uno?? pliss tell me... because i want to build a safe deposit box...and i used this simple touch switch and then i connect to a solenoid to lock the deposit box...plis reply.thanks

    tech savvy
    tech savvy

    Reply 9 years ago on Introduction

    Hi Husainjr , the best way I know would be hook pin 1 and 3 to your solenoids ,
    I'm not a 100 percent sure since I don't have arduino uno I'm planing to get one ,
    wish I could help you better but since I don't use arduino ,
    my best suggestion would be to read some of the other arduino uno users projects ,
    there's some good projects to look up I'm sure they will help you find a way,
    if you need any other help i'll do my best to find the answers ,