ESP8266 with ultrasonic sensor interfere

$20-40 USD

Đã đóng

Đã đăng vào

gần 3 năm trước

$20-40 USD

Thanh toán khi bàn giao

I have some hc sr04 sensors (ultrasound sensor) installed on 4 chairs (see photo of red chairs) and each connected to an Esp8266. When a person sits on a chair the sensor detects it because the distance is less than thirty cm and a command is sent via wifi to a raspberry PI on which some videos must be started. I already have some scripts for Arduino (for each Esp8266) and a python file for the raspberry but unfortunately they don't work as it should. The problem is that the 4 sensors being in the same room interfere with each other and often give wrong readings, thus obtaining that the films start even if a person is not sitting. I need some good ideas to solve this problem. One could be to make the four sensors work cyclically so that at the same time only one is in operation in order to receive only its echo. The Esp8266 are connected in a local network not internet. For me it is very urgent and I need to resolve the problem within 12 hours from now. Thanks to those who can help me.

Mã dự án: 30621235

Về dự án

13 đề xuất

Dự án từ xa

Hoạt động 3 năm trước

Bạn muốn kiếm tiền?

Địa chỉ email

Lợi ích khi chào giá trên Freelancer

Thiết lập ngân sách và thời gian

Nhận thanh toán cho công việc

Phác thảo đề xuất của bạn

Miễn phí đăng ký và cháo giá cho công việc

13 freelancer chào giá trung bình $68 USD cho công việc này

@Engrusman877

Hi There, I am a senior expert in electronics and embedded systems. I have more than 5 years experience with Arduino and ESP32/8266. just msg for more discussion. Thanks

$60 USD trong 7 ngày

4,7

(51 nhận xét)

5,8

@BlackStarGazer

Hello I can't bid on your project But maybe this can help a little 1-When there is no one sitting on any of the chairs , your sensors should read 0 or readings discarded -This must be adjusted ofc according to the room and distances , but it's mandatory . 2-I'm not sure about the 30 cm , the way I see it is like that : If some guy is sitting on a chair , the distance that the sensor reads should be very small , 10 or 15 cm max . 3-State Machine : I don't know the exact setup you want , but there should be a State that is ON once a sensor is detecting a person on any chair , So .. If State 1 (First chair for example) Is ON , then all other readings from other chairs are ignored . Once Chair 1 is OFF again , Any Chair can put It's State ON when it senses a person , and the other readings from other chairs are Ignored 4-Your setup as far as I understand it can be done easily with MQTT on RPI and pubSub on ESP Regards

$300 USD trong 7 ngày

5,0

(4 nhận xét)

4,6

@freelancersandh1

I will do arduino projects, nodemcu, esp32, esp8266 programming projects

$30 USD trong 7 ngày

5,0

(2 nhận xét)

3,7

@Provi11

I have more than 3 years experience in Iot and embedded systems and have good hands on both hardware and software. I have worked on many projects that are as follows: Raspberry pi projects with Python and C Servo motor control through touch screen panel Esp32 and esp8266 based project Arduino based projects Raspberry pi based projects Smart lock based on esp8266 Smart water management system based on esp8266 and AWS server Smart energy meter solution Smart curtain controller Iot device with bluetooth control by android application Touch screen based projects i have also worked on electric vehicle and implemented internet of things concept there too. i have my team which Can design and complete IOT based system from hardware to server setup and application development we just need your patience and my hardwork. looking forward to work with you Regards Prashant Mishra

$89 USD trong 1 ngày

4,5

(10 nhận xét)

4,3

@manasmw01

Hey there! I have done a similar project earlier! I understand your 12 hour limit and I am sure I can help you out within 12 hours. Have a look at my portfolio, I have worked with ESP8266 and Raspberry Pi before, and can help you out with this project. Message me and I'll clear your doubts. Looking forward to work with you!

$50 USD trong 2 ngày

5,0

(21 nhận xét)

3,7

@fredycc0

Hello, I am an electronic engineer, and I have more than five years working in the world of electronics and carrying out projects, I have a proposal that I think would solve your problem, it is to use a master / slave communication, thus avoiding many problems

$40 USD trong 7 ngày

0,0

(0 nhận xét)

0,0

@wickramasinghey

Hello, I have experience in arduino, esp and raspberry and I have knowledge about communication techniques. I have a great solution for interference problem. As I said earlier I have experience in a problem similar to this. Feel free to contract me. Thank you.

$35 USD trong 7 ngày

0,0

(1 nhận xét)

0,0

@nik3001

Buongiorno, Da anni sono nel mondo di arduino e esp, ed avendo già lavorato sia con tali sensori che con. Raspberry, credo di poterla aiutare in breve tempo. Mi faccia sapere se la posso aiutare in qualsiasi modo! Grazie, Matteo.

$35 USD trong 1 ngày