Remote Temperature Sensor

$30-250 USD

Completed

Posted

almost 3 years ago

$30-250 USD

Paid on delivery

I am looking for an energy efficient, small, battery operated temperature sensor, based on the ESP32 chip and a SHT3x temperature and humidity sensor. I need this to run for 4 months between battery charges using the ESP32 deep sleep mode for 10 minutes between each sensor reading and transmitting. I have been using an 18650 battery in my prototype, but open to other options which will provide for the requirements above. I am hoping there is a way to only power the temp sensor when the ESP32 is powered up (power from another pin which needs to be turned on?). I would also like the battery to be charged using a USB connection, and keeping all charging electronics inactive except when actively charging the battery. For this prototype (version 2) board I will also need to program the ESP32 using the USB connection. The battery should be on one side of the board and electronics on the other side, of course the battery side can be etched to run connections between components as needed.

Electronics

Electrical Engineering

Microcontroller

PCB Layout

Project ID: 30906944

About the project

8 proposals

Remote project

Active 3 yrs ago

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Awarded to:

@arrijal1992

$0 USD in 7 days

4.7

(98 reviews)

6.9

8 freelancers are bidding on average $295 USD for this job

@Engrusman877

Hi There, I am a senior PhD Level Expert and Have more than 5 years of experience in electronics and circuit design. Just check my profile and share your details. Time and Budget will be discussed. Thanks

$140 USD in 7 days

5.0

(39 reviews)

5.2

@liangyao328

Dear Client. I have just read your job description and your project is really interesting to me. I have many experiences working for 12+ years with Circuit design, PCB design, manufacturing functional prototyping with firmware programming and testing especially. I have developed many kinds of IOT and smart control devices in using Arduino, Raspberry pi 4, MCUs, Microcontroller. So that, your project is not problem for me. Here are some of the experiences that I built ago. - Schematic and PCB design and Layout using Altium Designer. - DDR, motor control, power converter, Keyboard, POE, UART, SPI, I2C, RF, BLE, LED lighting design. - ARM Cortex-M, DSP, MCUs(STM, Nuvoton and so on), Arduino, Raspberry pi experiences. I would be very grateful if you give me a chance to satisfy you. If you want, I can show you the products I've made until now to let you know I am the best choice. I'll do my best for you. Thank you for your time. Best regards.

$200 USD in 5 days

5.0

(3 reviews)

5.2

@soltracker

Its me Imad, have done 200+ projects regarding embedded systems...Thanks for posting the job........................

$150 USD in 2 days

4.9

(74 reviews)

4.9

@shivkantverma

hi i am interested to work on your project. i can satisfy your requirement please discuss more details . it would be my pleasure to serve you. Thank you

$250 USD in 7 days

5.0

(13 reviews)

4.5

@danish2051

Hi. i am already working on same type of device. I will do:- Simple to advanced Circuit design and analysis using software tools such as KiCAD, Proteus, Altium Designer, Allegro, PADs, and Eagle My package provides the following services - Schematic drawings - Gerber files - Netlist generation - Pcb's - BOM generation (Professional BOM) - 3D Models of the Actual PCB - ECAD Library Administration I will also generate Gerbers on existing PCBs files

$250 USD in 20 days