Find Jobs
Hire Freelancers

Arduino Temperature and Humidity Logging with Multiple Readings

$250-750 USD

Closed
Posted over 8 years ago

$250-750 USD

Paid on delivery
Looking for a system that can log multiple Temperature and Humidity Samples at the same time. We will have three (3) Samples and in each sample we will have to read and log two (2) temperature and two (2) humidity readings and also we will need to log the local area for both temperature and humidity at the the same time. We are looking to log from 0 Minutes up to 90 minutes of time. Some additional details: -need to spec the sensors and they might be a Dual Sensor -need a complete list of materials -need to create a wiring diagram -need to write a program for logging
Project ID: 8037865

About the project

40 proposals
Remote project
Active 9 yrs ago

Looking to make some money?

Benefits of bidding on Freelancer

Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
40 freelancers are bidding on average $409 USD for this job
User Avatar
hi sir i am an expert electrical engineer i can do it for you i have almost 4 years of experience in this field. i assure you quality work and on time delivery please reply to discuss it further i am waiting for your reply to start regards
$526 USD in 15 days
4.8 (218 reviews)
7.8
7.8
User Avatar
Dear sir I have done similar projects before, i used SHT11 and SHT15 temperature and humidity sensor, i will deliver to you the work efficiently and very fast, please message me so that we can discuss
$250 USD in 6 days
4.9 (226 reviews)
7.4
7.4
User Avatar
A proposal has not yet been provided
$555 USD in 2 days
4.8 (72 reviews)
7.0
7.0
User Avatar
Hello, Have a great day. We are R&D based company having rich experience in Datalogging hardware. We have already developed the hardware that pushes the data (Values from different sensors) on web. We will deliver the following. 1. Schematics. 2. Bill Of material 3. PCB design and gerber files. 4. Source code. 5. Demonstration of Working circuit. Please feel free to contact and to know more details.
$750 USD in 25 days
4.8 (59 reviews)
6.8
6.8
User Avatar
A proposal has not yet been provided
$526 USD in 10 days
4.9 (86 reviews)
6.3
6.3
User Avatar
Great Project !!, I have seen and understand all your requirements. I have very strong expertise in it although I have a great experience in it, I have intelligence, energy and integrity. Once give me work, I assure you , you'll surely like my work. Please open chat window to discuss further.
$300 USD in 8 days
4.9 (92 reviews)
6.2
6.2
User Avatar
Over 12 years of experience in electronics hardware and software design. Proficient in software and hardware design of embedded systems. Successful in planning and management of entire development and production cycle. Programming languages: C, C++, Ada, Pascal, MATLAB, GPSS, VHDL Processor architectures: 8051, AVR, ARM-M3, ARM-R4, ARM-7, x86, PicoBlaze, PSoC, PIC FPGA and CPLD architectures: Cyclone, MAX, Spartan, CoolRunner Set of rules to be stated before work: - All milestones should be backed up by you. So you release the money for milestones when you receive work done for each milestone and happy with it. - All decisions that I will make during the development that were not stated in project description I may do on my own understanding. I may ask you, if something was not described but not necessary I will do so. - Any changes that are to be entered by you for the project description, results, milestones, etc. after me accepting the project are subject to discussion and may lead to extra payment. - Next milestone work will begin only after finishing the previous one and releasing payment for it. - Prototype cost, delivery costs, components, PCB manufacture and other costs not connected with solely my services are extra payed when they are determined.
$526 USD in 15 days
5.0 (16 reviews)
5.6
5.6
User Avatar
Hello, I am interested in your project and DHT22 is the required sensor. Also, I have this sensor and can show you live demo. Please feel free to write back if you consider. Thank you. Sam
$333 USD in 10 days
4.9 (40 reviews)
5.6
5.6
User Avatar
I am experienced in designing and prototyping embedded systems circuit. Please review my portfolio for some samples of my previous work. I am opened for any suggestions and prefer longterm relationship.
$500 USD in 10 days
5.0 (25 reviews)
5.2
5.2
User Avatar
HI I'm arduino expert have done many of Arduino based system designs You can visit my portfolio for more details . How you place the logging system I mean 3 loggers at same place or three different places ? Thank you Chamika Gamage
$555 USD in 10 days
5.0 (13 reviews)
5.1
5.1
User Avatar
Dear friend, Hi there We have good experience with arduino hardware and software. We cam make this for you as per your satisfaction. In this project, We can use RTC (Real Time Clock) along with humidity temp sensor and will store all the log on the SD Card along with time stamping. Whenever data needed, you can import to PC from SD card. Consider Us, Thank You. Have a nice day :)
$250 USD in 7 days
4.9 (23 reviews)
5.0
5.0
User Avatar
Hi, We are a team of engineers with more than 10 years of experience in designing and developing various digital and embedded systems... Currently, apart from our R&D, we help engineering students to complete their academic projects. Also conduct seminars and workshops on Microcontrollers and Robotics... So we have experienced with a lot of Microcontrollers such as PIC, AVR, ARM, Arduino etc. We are also experienced with a lot of sensors and sensor modules.... We are very proficient with PCB desingning tools such as EAGLE, KICAD etc... We have done a lot of projects with arduino, please check my completed projects and reviews given by other employers...:-) We really would like to know more about your project, kindly let me know if you are interested...:-) Thank You
$277 USD in 5 days
4.9 (10 reviews)
4.6
4.6
User Avatar
Hello, I can do this work good and fast. DHT22 - good sensor for this. (4$, +-0,5% temp, +-2% humidity, 1 sample per 2 second) If you need another parameters, we can use another sensor. If need, it's good to average data ('moving average' - one of the best filter). Do you have any suggestion how to display data? All is possible to do.
$250 USD in 7 days
4.8 (8 reviews)
4.5
4.5
User Avatar
Hello, I have experience in systems with log and temperature measurements. Regarding the log: I would recommend a SD card, since it can reach up to 32GB and that's more than enough for any format of 90 minutes temperature and humidity data. Regarding the sensor: DHT22 is a good choice if precision and simplicity are a priority it has temperature and humidity in one package. I have one on stock and I can supply myself with any needed count in the matter of 1 day. I see that 2 if the sensors might be away from the main board. This can be made by using RS-485 for the communication between the sensors and the Arduino. Since DHT-22 is a digital sensor and supports one wire serial protocol, using RS-485 is possible. With RS-485 you can reach a top of about 1km distance between the sensor and the Arduino. Regarding the time: It's 13 days simply because the next 10 days I am in vacation, and can't make any development. When my vacation ends (17.07) I need 3 work days to make everything ready to be reproduced. Of course I will be available on Skype for direct instructions on wiring and generally anything needed for the system. I have no time limit for Skype consultations, they will be available until the system reaches stable working condition. I am available at all time on Freelancer if you want some more details, or you wish to negotiate price or other. Best Regards, Mihail Vrachanski
$500 USD in 13 days
4.5 (16 reviews)
4.2
4.2
User Avatar
Hello! I have experience programming in C / C + + for almost 20 years. Devices based on Arduino, I'm doing more than 3 years. I have experience writing applications "client-server" for the Arduino, writing applications to interface Arduino and Android, integration of Arduino and Processing. I have experience making "smart house" on the Arduino (arduino, php, javascript, AJAX, JSON). More, I have experience in: - making hydroponics installations on Arduino - the control system with LED lights for plants light - equipment for the reality-show "Treasure Rom" - Access Control Systems for printing equipment with RFID - The control system for the aquarium. PH, heating, lighting. I am ready to write a program for Arduino and provide a complete description of the device. I have all the necessary equipment available. I am ready to assemble a working prototype to verify the correct operation of the program. But In fact, I need a more detailed description of the project.
$250 USD in 7 days
4.5 (11 reviews)
4.1
4.1
User Avatar
A proposal has not yet been provided
$533 USD in 10 days
5.0 (4 reviews)
3.8
3.8
User Avatar
I have experience in developing the MCU embedded system with C,C++ language with PIC, RENESAS, NEC.... I have designed the concrete plant control system, Power Line Communication system and many project. I also have experience in developing the windows application using Java, VB.Net and MFC. And i designed the PHP e comencial page. I can help you on this project. Thank you very much.
$300 USD in 10 days
4.2 (9 reviews)
4.5
4.5
User Avatar
This proposal is for the design of a system that will log 7 humidity and temperature readings and 2 each for the 3 samples. Measurement will be made using the Sensiron SHT-21 Digital Humidity/Temperature sensor. A I2C memory will be present to store the readings as will a Real Time Clock component to provide time and day. There are details that will need to be worked out such as power source, performance requirements, environmental requirements, size and packaging requirements, location and connection methods for the sample sensors as well as the user interface to retrieve the logged data. Deliverables will include requirements and design document including schematic, layout, Gerber files, tool files, bill of materials. Upon completion of design, a separate proposal for the fabrication and test of the unit(s) would be provided. I have used the Sensiron components in several projects and find them to be reliable and accurate. I have been doing three temperature/humidity measurements inside a honeybee hive using the SHT-11, transmitting the data to the internet at 8 minute intervals. I am currently switching to the SHT-21 for its I2C interface. I have close to 40 years experience developing command and measurement systems in all areas including industrial, military, nuclear and aerospace. Please contact me if additional information is required.
$277 USD in 10 days
5.0 (3 reviews)
3.5
3.5
User Avatar
A proposal has not yet been provided
$555 USD in 10 days
5.0 (3 reviews)
3.1
3.1
User Avatar
Hello, I am a Hardware and Firmware Developer cum Schematic/PCB Designer, having 9+ years of experience. Expertise in Arduino, AVR, PIC, 8051 programming. PCB/Schematic design expertise in Proteus, Altium, Eagle, Orcad. Also having expertise in using Simulators like Proteus, Multisim, PSpice. So, I can simulate this project. And if u want some changes in the result as per your specific requirement, it can be easily done. I want to discuss further details. Thanks Sapna Surve
$277 USD in 15 days
5.0 (2 reviews)
1.8
1.8

About the client

Flag of UNITED STATES
United States
0.0
0
Member since Jul 10, 2015

Client Verification

Thanks! We’ve emailed you a link to claim your free credit.
Something went wrong while sending your email. Please try again.
Registered Users Total Jobs Posted
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
Loading preview
Permission granted for Geolocation.
Your login session has expired and you have been logged out. Please log in again.