Devam Ediyor

Simple circuit to enable finger-touch switch to trigger Arduino

I want to be able to trigger an Arduino using a finger touch switch, i.e. a circuit that is completed when a person's finger bridges to contacts.

I found this circuit online and got it working perfectly with a 9V battery: [login to view URL]

I need help adapting this circuit diagram so that I can connect it to an analog input on an Arduino.

Requirements:

* Circuit diagram based on the one above with all components specified and indication of where to connect to arduino 5V, ground and analog input.

* The LED in the circuit above can be removed.

* The circuit should use the Arduino 5V as the only power supply.

* The circuit should not damage the Arduino.

* The circuit should comprise discrete components only. Small IC is maybe ok, as long as it's easy to solder, but I'm sure this can be done with discrete components.

* The circuit should make it possible to define a clear threshold value on an Arduino analog input such that I can easily detect when the switch is closed.

* Variable sensitivity (or an indication how to change the components to vary the sensitivity) would be useful.

I do not need:

* Any Arduino code written (I have already written code and can adapt it as necessary)

* The circuit to be built: I will source the components and build it myself.

* A circuit layout: I'm ok to work this out.

Beceriler: Arduino, Elektronik, Mikrodenetleyici, Elektrik Mühendisliği, Devre Tasarımı

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İşveren Hakkında:
( 1 değerlendirme ) Seattle, United States

Proje NO: #21705621

Seçilen:

todool

dear employer, a have a lot of experience with Arduino and this is an easy job for me, greetings, Tobie

%selectedBids___i_period_sub_7% gün içinde 31%project_currencyDetails_sign_sub_9% %project_currencyDetails_code_sub_10%
(8 Değerlendirme)
3.6

Bu iş için 24 freelancer ortalamada $47 teklif veriyor

sagradoamicus

Hi i am experienced electronics engineer with more than 11 years of experience. I can do it for you. I have seen the attached document and have a suggestion that I implemented before for similar human touch detection. Daha Fazla

$60 USD in 2 gün içinde
(249 Değerlendirme)
7.9
bijan01in

Hi I am interested to your project. I am familiar with electronics, microcontroller as well as PCB design by Eagle. Thanks.

$80 USD in 3 gün içinde
(86 Değerlendirme)
5.8
Mestek

hello i am a computer engineer,i have masters in computer engineering,i have experience for more than 8 years in arduino and electronics,i have already made this circuit to an australian customer here and i have video Daha Fazla

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(21 Değerlendirme)
4.6
ranjukravi

may i suggest a circuit using TTP223 ic (touch sensor ic).also i can make standalone board that can be used as Arduino with this touch switch and if any other sensors like this one ...PCB designing will be using Kica Daha Fazla

$80 USD in 4 gün içinde
(9 Değerlendirme)
4.1
ManormaShehzadi

hi sir I have done BSc Electrical Engineering. Now doing MSc Mechatronics and Control ENgineering. I am very expert in Arduino. I did many task .I also have industry experience. I have read your requirements, and 100% Daha Fazla

$50 USD in 2 gün içinde
(6 Değerlendirme)
3.7
Kingstech35

Hello, I am a senior device developer. I have plenty of experience in firmware development and micro-controller developments. I can write the firmware based on Arduino, Raspberry Pi, Pic, FPGA, ARM, DSP and so on. And Daha Fazla

$80 USD in 2 gün içinde
(6 Değerlendirme)
3.6
harisjamal1995

Hello Sir I am a Mechatronics engineer and I have a lot of experience dealing with these things. I have understood your job and I can do it. I will definitely deliver your work on time and I will be pleased to do your Daha Fazla

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(6 Değerlendirme)
3.6
sikanderabbas48

Hi ! I hope you are fine Sir, I want work on your project. I have made many project related Arduino. I have good experience in Arduino. I will satisfy you with my performance. Thanks

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(6 Değerlendirme)
2.7
autotechcontrols

Do you mean capacitive touch switch

$55 USD in 10 gün içinde
(0 Değerlendirme)
0.0
serdarzbk

Hi, I can design this circuit. I understand that you want a schematic in order to implement on a breadoard. Am i right? TTP223 capacitive touch sensor shield can be used as a touch sensor.

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(0 Değerlendirme)
0.0
manganiellojose

Greetings, we are a group of electronic, instrumentation and computer engineers. We have experience PIC microcontrollers (series 12F, 16F, 18F, dsPIC30F, PIC32), Arduino (we have Arduino Nano, MEga2560, Uno), we develo Daha Fazla

$20 USD in 5 gün içinde
(0 Değerlendirme)
0.0
FabriOlivari

Trabajo ágil y prolijo. Esquemáticos y planos para armar el circuito. Entrega a tiempo. Responsabilidad y discreción a la hora de trabajar. Espero poder ser contratado, gracias Relevant Skills and Experience Técnico e Daha Fazla

$55 USD in 3 gün içinde
(0 Değerlendirme)
0.0
vijaykumarmourya

Hi We are glad to server you our service in you project problem statement and complete project on time. About us We are the Group of expertise in various technical domains as follows. 1. Internet of things Daha Fazla

$77 USD in 2 gün içinde
(0 Değerlendirme)
0.0
Ajithkumarakp123

I have an experience in arduino project

$30 USD in 10 gün içinde
(0 Değerlendirme)
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sakthidamu

Hi, I am Dhamodharan from India. I am an Electronics Engineer with 10 years of experience. I am interested in your project. ----------------------------My relevant Skills------------------------------------ -> Good Kn Daha Fazla

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(0 Değerlendirme)
0.0
epslnl

Two NPN transistors and three resistors is all you need. You can use a threshold of 2.5V for the ADC to detect touch or not. The circuit will also work on one of the GPIO pins if you do not want to use an analog input. Daha Fazla

$50 USD in 2 gün içinde
(0 Değerlendirme)
0.0
mcbarreto

Hello, my name's Maria. I am a Mechatronics engineer specialized in Control and Automation Engineering with extensive experience developing projects with Arduino. I took the time to read your project description and do Daha Fazla

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(0 Değerlendirme)
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michaelchan1950

I will complete the task ,which Schematic &PCB in PADS logic and PowerPCB file .All parts library build with information for sample built . suggest to use chip , easy to tune sensitivity

$50 USD in 7 gün içinde
(0 Değerlendirme)
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TuanVo213

Dear I am a electrical engineer (7 years experience) Your request is very simple I can send you complete circuit with popular IC so that you can find component in the market easily. you also connect the output directl Daha Fazla

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Ankitjat27

I am done this project you can see this video - [login to view URL] i am electronics engineear And also a founder of [login to view URL] . give me a chance Daha Fazla

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