Find Jobs
Hire Freelancers

ESP32 based Point of Sale

$30-250 USD

Completed
Posted almost 3 years ago

$30-250 USD

Paid on delivery
Esp32 based point of sales system, for the danish payment provider called mobilepay. Mobilepay is a phone based payment system, where a client photograph a QR code within the mobilepay app to provide a payment. The paied amount will be fixed within the esp32 code. When a payment is sent, the esp32 should receive a confirmation via REST api, and then give out x amount of pulses to fake a coin signal in machines and alike, we have access to the sandbox by mobilepay, and are fully ready. Mobilepay documentation is on the link below: [login to view URL] What you need to look at is the Mobilepay (Point of sale) API, this is what your firmware must be communicating with here. A bt iBeacon might be needed in order to complete this. But in short, we need a working pcs of firmware, before anything milestone is paid out, and what you bid is what you get so dont ask for more then you bid. ALSO read the above dokumentation, might be some things i left out. For the right freelancer, this job should be pretty easy, but dont bid if you did not atleast skim the dokumentation Please!
Project ID: 30120091

About the project

6 proposals
Remote project
Active 3 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
Awarded to:
User Avatar
I have experience of using ESP32 with mostly every main service providers out there, AWS, Google Cloud, Azure IoT, IFTTT, ThingSpeak, etc. So a connecting another server using Rest API will be easy. Dear Sir, I have experience in providing complete embedded solutions for 4 years. I am skilled in programming microcontrollers like Renesas, Texas Instruments, PIC, Arduino, Espressif, and many more. I can design schematics and PCBs regarding the projects, as I have done in many of my own projects It will be an easy and less time consuming task for me. I can assure you that if you work with me once, you will always work with me on these kinds of projects. I will do whatever it takes to completely 100% deliver on this project and earn a 5-star rating from you as well. Also if you have any minor changes related to this task after completion, I will do it for free. Looking forward to working with you on this project. Awaiting your reply. Kind Regards, MPoonawala.
$125 USD in 17 days
5.0 (10 reviews)
3.6
3.6
6 freelancers are bidding on average $184 USD for this job
User Avatar
Hi Hiring Manager I am Firmware Developer for ESP32, PIC, STM32, nRF5X, Arduino My core skills and experience in the field of Embedded and IoT system development are: - Firmware Development:- Assembly, C, C++. - Schematic/PCB Design:- EagleCAD, Altium Designer, KiCad, and EasyEDA. - GUI Development:- Qt(C++) (for Windows, Linux, and macOS), C#, and .Net. - Embedded GUI Development:- uGFX, LittlevGL, emWin. - Hardware Peripherals:- USART, SPI, I2C, I2S, CANBus, OneWire, USB OTG, USB Host, USB Device (MSD, HID, CDC, DFU), Ethernet, RTCC, ADC, DAC. - Version Control Tools - Git (GitLab, GitHub, and BitBucket). - Documentation: Markdown, Doxygen. I have worked on following families of Microcontrollers from various manufacturers: - Microchip:- PIC12, PIC16, PIC18, PIC24, dsPIC30, PIC32MX, PIC32MK, PIC32MZ, and dsPIC33. - Atmel (now Microchip):- ATtiny, ATmega, ATSAM, and AT89C. - ST Microelectronics:- STM8, STM32F0, STM32F1, STM32F4, STM32L, STM32G, STM32W - Texas Instrument:- MSP430, MSP432, TM4C, F28M. I have experience on following wireless SoCs/SoMs: - BLE - CC25/6, nRF51/2, ESP32, PICO D4. - WiFi - ESP8266, ESP32, Particle P0/1. - Cellular - SIM800, SIM5320, SIM7600, Quectel BG96, A9/A9G. Interfaces: - USB (HID, MSD, CDC, DFU) - SD Card/MMC - UART(Serial) - SPI/I2C - CANbus - MIDI - Ethernet - Secure OTA using WiFi/BLE, 2G/3G/4G. Thanks
$250 USD in 4 days
4.9 (22 reviews)
6.4
6.4
User Avatar
Hello, I have read your description and i am interested on your project. Please open chat to discuss further, thank you!
$250 USD in 2 days
4.9 (40 reviews)
5.5
5.5
User Avatar
electrical and electronics engineer with MS. degree in Engineering and more than 10 years of experience in the industry. will do it up to 14 days.
$278 USD in 14 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of DENMARK
Aulum, Denmark
5.0
17
Payment method verified
Member since Apr 16, 2021

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) & Freelancer Online India Private Limited (CIN U93000HR2011FTC043854)
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.