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raspberry - ds18b20 - relay

$30-250 USD

Closed
Posted over 3 years ago

$30-250 USD

Paid on delivery
hi there, check 1wire bus 1, check 1wire bus 2, check 1wire bus 3 for ds18b20 sensors. if sensor is found, write data to external mysql database. write there sensor value and sensor address. after data is written, check again 1wire bus 1,2,3 for new sensors and write data. only write data to mysql database if value from sensor has changed. so you have to read first last value from sensor address. I want to control two 8channel relay modul with raspberry. Raspberry should get state from webpage with http get request as 1 or 0 for every channel and i want you to read this every second and set or unset relay. all hardware is on my side, work via anydesk. i will be next. timeline is one day.
Project ID: 28392147

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8 proposals
Remote project
Active 3 yrs ago

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8 freelancers are bidding on average $145 USD for this job
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Hi Hiring manager I am Fullstack Django, Android, AngularJS, Raspberry Pi, IoT Developer I develop websites and web applications using Django/Python in addition to Android, Raspberry Pi, C/C++, Java, JavaScript and HTML/CSS development. I am quite good with Linux and can also deploy your web applications and websites on AWS, Azure, Heroku, Digital Ocean, or any other Linux powered server (like Digital Ocean, 1and1, Rackspace etc.) with or without SSL. [Web Frontend] HTML, CSS, JavaScript, AngularJS, Bootstrap, jQuery, Backbone.js [Web Backend] Python, Django, Django REST Framework, Heroku, Azure, AWS [Payment Processor] Stripe, PayPal [Mobile Development] Android SDK, Java, C/C++, Android Studio, NDK, Custom Layouts, Material Design, iOS, Swift, Xcode, Obj-C [Server Management] AWS, Azure, Heroku, 1and1, Digital Ocean, Fedora, CentOS, OpenSUSE, Ubuntu, nginx, Apache [General Programming] Python, SciPy, NumPy, Java, C/C++, JavaScript [Databases] MySQL, SQLite, PostgresSQL [Raspberry Pi] Cross-compiling, C/C++, Python, Java, Raspbian [Productivity Tools] Hangouts, Skype, Git, JIRA, SVN, Trello, Wunderlist, Redmine, Slack Thanks
$250 USD in 1 day
4.8 (21 reviews)
5.6
5.6
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you could accomplish this with ESP32 Raspberry Pis is overkill for your project, Pi tends to corrupt in case of chaotic power cycles, Pi takes ages to boot why not use cost effective module like ESP32 ? It has lot of pins to connect to your 8 channel relay It can connect to WiFi network to push SD18B20 data to your server, and read server response to actuate your relays I can do this pretty quick
$140 USD in 7 days
5.0 (22 reviews)
4.8
4.8
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Hi Sir! I am student of MSc MEchatronics and Control Engineering. I have done BSc Electrical Engineering. I am very expert in Raspberry included its all module. I will give you best work on time
$111 USD in 1 day
4.8 (19 reviews)
4.6
4.6
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ELECTRICAL As an electronic architect, I have been working in PCB structure/design and firmware programming field for 8+ years. Here is a portion of the encounters that I worked back. - Schematic and PCB Format is utilizing Altium Planner, Rhythm, Falcon, etc. ISE/XPS/SDK/Vivado, Altera Quartus, IceCube) - ARM, DSP, MCUs, Arduino experience. - Arm centers: ATSAM, STM32, PIC32, A13, Freescale, MSP, NXP - MPU: Pic16F, Pic18F, Pic33F, Atmega8,16,128,32,8051,8951,8052,80251 - Single board PC: Raspberry Pi, Beaglebone, NanoPi - Strong with UART, I2C, SPI, BLE, BT, GSM/GPRS/GPS, xBee, ZigBee. - Especially full understanding for BLE HM10, HC05, ESP32, DA14580, nRF52832, 52840, BlueNRG, - C/C++ Coding IDE: keil uvision, Eclipse IDE, Arduino IDE, Avr Studio. - Microprocessor / Microcontrollers: 8051, 8086, ATMEGA, AVR, ATSAM3X8E,STM32,PIC Open Source Micro controllers Platforms: Arduino Uno, Arduino Nano, Arduino Due, STM32 Nucleo board. Experience in managing all phases of electronic product manufacturing and assembly Experience in board-level Testing, Debugging, Test Reports, Test Plans. I am ready to give hardworking, reliability, flexibility & honesty. I can work with minimal supervision, communicate & give updates on the status of my work output. When you employ me, anticipated that I should enable your business to like I 'm developing it as my own. I couldn't imagine anything better than to get notification from you
$30 USD in 2 days
5.0 (10 reviews)
4.3
4.3
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hello sir.✋ I have just read your job description and your project is really interesting to me. The Items you raised are similar to what I have already done in practice and I think you can do it in a short time if you have a little explanation. I'm an expert having specialization in Electronic Engineering Design. ✔️ Embedded system based on Microcontroller (ATMEGA, AVR, STM8, STM32, MSP430, TMS320, PIC ...) ✔️ Python with Deep Learning, Machine Learning ✔️ Python with Data Science ✔️ A system based on development boards(Arduino, Raspberry PI, Node MCU, Bluechip, Teensy,…) ✔️ Antenna design & Analog circuit/RF communication circuit designing and simulation using Proteus, P-Spice, Tina Pro, ADS, CST, Ansys, HFSS ✔️ Bluetooth, WIFI, zigbee, LoRA ✔️ High-Speed layout using HyperLynx ✔️ PCB layout designing, providing GERBER and BOMs, 3D files using Altium, EAGLE, Kicad, EasyEDA… ✔️ Programming firmware of Microcontroller & C++ ✔️ BMS I think my many design and practical experiences can help you design your project and give you enough satisfaction. I look forward to your response. Best Regards.
$220 USD in 4 days
5.0 (5 reviews)
3.1
3.1
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Hiya, I have sitting on my desk a R-Pi 3B+, a 16Channel Relay Board, and 2xDS18B20 temp sensors. I'm assuming that relays would be either on/off based on a specific range of temps, i.e relay 1 = on if temp from sensor1 is between 60 and 80 degrees. Is this roughly what you want? I'm think 2 python scripts would be best, one to read & store the values, and another one to set/unset the relays based on the temps stored in the database. I can whip up some code for you no problem. I've stated 3 days, so I can test my code thoroughly before delivery, & give you time to run & check it on your end. However, I have a few questions/thoughts, as follows: Is your mysql database on the Raspberry Pi's SD card? I'm worried about doing a 16 "read-write-reads" every second, (once for each sensor), as your SD card may not last long with that kind of activity. You say "if a sensor is found", is it likely that sensors will be disconnected unexpectedly? I ask this because the sensor address will stay the same even through restarts, and it would be simpler (and more reliable) to just have a file with all the temp sensors listed, and then our program can get the temps based on the list of sensors. Lastly, have you looked at HomeAssistant? It's free, open source software for Home Automation, designed for the R-Pi. I think it would be perfect for what you want, as it stores all temp values & it's simple to create automations based on temperature. I'm not affiliated to them, just a happy user.
$125 USD in 3 days
1.2 (5 reviews)
4.5
4.5
User Avatar
ELECTRICAL As an electronic architect, I have been working in PCB structure/design and firmware programming field for 8+ years. Here is a portion of the encounters that I worked back. - Schematic and PCB Format is utilizing Altium Planner, Rhythm, Falcon, etc. ISE/XPS/SDK/Vivado, Altera Quartus, IceCube) - ARM, DSP, MCUs, Arduino experience. - Arm centers: ATSAM, STM32, PIC32, A13, Freescale, MSP, NXP - MPU: Pic16F, Pic18F, Pic33F, Atmega8,16,128,32,8051,8951,8052,80251 - Single board PC: Raspberry Pi, Beaglebone, NanoPi - Strong with UART, I2C, SPI, BLE, BT, GSM/GPRS/GPS, xBee, ZigBee. - Especially full understanding for BLE HM10, HC05, ESP32, DA14580, nRF52832, 52840, BlueNRG, - C/C++ Coding IDE: keil uvision, Eclipse IDE, Arduino IDE, Avr Studio. - Microprocessor / Microcontrollers: 8051, 8086, ATMEGA, AVR, ATSAM3X8E,STM32,PIC Open Source Micro controllers Platforms: Arduino Uno, Arduino Nano, Arduino Due, STM32 Nucleo board. Experience in managing all phases of electronic product manufacturing and assembly Experience in board-level Testing, Debugging, Test Reports, Test Plans. I am ready to give hardworking, reliability, flexibility & honesty. I can work with minimal supervision, communicate & give updates on the status of my work output. When you employ me, anticipated that I should enable your business to like I 'm developing it as my own. I couldn't imagine anything better than to get notification from you
$30 USD in 2 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of GERMANY
Linnich, Germany
5.0
59
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Member since Apr 8, 2013

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