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Arduino / ESP32 Squarewave generator with Resistance meter and Android logger

Proof of concept basic version with following features

ESP 32 Unit that allows the following measuring cycle:

Measure for 2 seconds average resistance A

then Generate on same wires 50 Hz Square wave with 90% duty cycle for 5 sec

Measure for 2 seconds average resistance B

then Generate on same wires 50 Hz Square wave with 10% duty cycle for 5 sec

Measure for 2 seconds average resistance C

Calculate the following 2 values A divided by B and C divided by B and send to android with timestamp

PLUS Basic Android app should have a button to start the above cycle and log the above two values with a timestamp and note

NOTE : Resistance has to be measured between 5kOhm and 50 MOhm - only relative values no absolute calibration required)

Square wave should be adjustable with little potentiometer 5-20 V p

YOU make a Prototype and send to ship to me - I will pay material and shipping cost with a separate milestone

If this is successful you will get several follow-up projects to refine the product and make it produceable

Please make a quote that you want to work for - not just a dummy number and then ask me WHAT IS YOUR BUDGET - all details are here - lets not waste our time with Hi- how are you - just let me know if you have some questions about details so I see that you actually read my project outline

Навички: Android, Arduino, Електроніка

Деталі: wifi signal strength meter android, wind meter android, speed meter android, esp32 ledc arduino, esp32 square wave generator, electromagnetic meter android, iemp simple arduino dds signal generator, code sound meter android, ghost meter android, arduino resistance meter, simple arduino resistance meter, anemometer wind speed meter android, arduino synchronized signal generator, gprs water meter data logger, meter android, voltage meter android, arduino code phase open energy meter, sagittal meter android

Про роботодавця:
( 59 відгуки(-ів) ) Koh Samui, Thailand

ID Проекту: #25310239



Hello I have got your job posting and I am very much interested to work in your project. . For more on my skills and successfully finished projects, please have a look on my Profile and Portfolio. I am always av Більше

$200 USD за 7 дні(-в)
(49 відгуків(-и))

19 фрілансерів(-и) у середньому готові виконати цю роботу за $213


So refreshing to have a to-the-point project description! Check my milestones for a breakdown of the quote. What you described is definitely doable. One thing you did not mention, though, is whether you want to have a Більше

$290 USD за 10 дні(-в)
(16 відгуків(и))

Hi, i want to know where are these resistances to measure come from , a resistive load connect to the ESP32 or what if thta's the case, then we need two resistors, one with known value, one with unknown value connecte Більше

$140 USD за 7 дні(-в)
(11 відгуків(и))

I am very interested in your project. question: because I am electrical engineer, I understood about PWM fully. so, no question. my budget: 600$ prototype+app developing. deadline : 15 days. thanks.

$600 USD за 15 дні(-в)
(3 відгуків(и))

Hi I am an expert with more then 6 years of experience in embedded systems, Iot, automation, pcb design and dovelopment and prototyping. I have hands on experience in esp32, arduino, pic, arm, raspberry pi and other mc Більше

$333 USD за 15 дні(-в)
(12 відгуків(и))

Good Day! A rought timeline is mentioned below. I am a Embedded Systems Engineer based here in the Philippines. I have been doing microcontroller projects for the past 6 years now. Most of the time I use arduino as we Більше

$200 USD за 7 дні(-в)
(17 відгуків(и))

Hi I am embedded systen engineer with 7 years of experience and i have esp32 with me. I can generate waveform with adjustable amplitude. If you dont need andoid logger. I can do it for $150 but with android i can make Більше

$250 USD за 7 дні(-в)
(3 відгуків(и))

hello dear project owner. Thank you for posting that project. You can read about me below. About your project–I am doing schematic,PCBandSW\FW design every day (I design and make industrial electronic equipment – Ultra Більше

$30 USD за 7 дні(-в)
(11 відгуків(и))

Hi and good morning, IMHO some details are missing, like which precision do you need to archive in measuring ? Is a "pure" resistor or has an inductive/capacitive component ? How do you get "timestamp" , with an Inte Більше

$250 USD за 30 дні(-в)
(3 відгуків(и))

hello sir, how are you. I read your proposal and i am interested in this project. I am an Embedded engineer (arm, pic, AVR, Arduino, SOC ble chips, ZigBee, WiFi, GPS, LED, LCD display etc.) and PCB designer. You can c Більше

$130 USD за 7 дні(-в)
(3 відгуків(и))

Dear, client. I just read your request carefully and your request will be done within few days. I have rich experience in ARDUINO, ESP32, ESP8266 and Raspberry PI with multi sensors including PSI sensors, PIR sensor Більше

$400 USD за 10 дні(-в)
(1 відгук)

Hello. I have read your description carefully and I am very interested in your project. I am Steven and have 10+ years of actual experience in Embedded System Design based on PCB design and analysis PCB layout and ver Більше

$250 USD за 9 дні(-в)
(1 відгук)

Hello You have a very serious requirement that you want at 20V square wave to travel on the "SAME" lines connecting the resistors to be measured. Still I can find ways to multiplex the line between the two signals Більше

$200 USD за 7 дні(-в)
(0 відгуків(и))

Hello, Client. Nice to meet to you. I am interested in your job. I have a rich experience in fields for your job. I have developed a 10/100Mbps and 1GHz Ethernet unit using Altera's FPGA. I have developed 200MHz Oscil Більше

$140 USD за 7 дні(-в)
(0 відгуків(и))

I understand, it's somehow hard to find right freelancer for your work, so here is a structured format. Aim: Duty cycle controller with square wave generator What I can do in your project: I assume that this is part Більше

$140 USD за 7 дні(-в)
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hi sir I’m new in this platform and I really need to get started you will be my first client I’m going to assist you step by step trout this project intel you get your project working

$100 USD за 7 дні(-в)
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I have read your requirements I can do your work easily as i have handled this before I have experience in arduino from 5+ years and made several projects on it I also have hands on experience on PCB designs I can Більше

$170 USD за 5 дні(-в)
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Dear client Can i do this project. I have done similar [login to view URL] have much experience. Negotiations for this project can be discussed

$45 USD за 7 дні(-в)
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Hi I read all the description and i can help you with the Arduino project. the details you have mentioned are very clear anyhow i can provide the simulation model for you and will mention which hardware to use so it w Більше

$180 USD за 7 дні(-в)
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