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Build a embedded RFID card system device for payment transactions - PCB design, software & Product design

€1500-3000 EUR

已关闭
已发布大约 6 年前

€1500-3000 EUR

货到付款
Multiple devices will be used in one setup (1 to +100 devices). They authenticate to the network and receive a unique ID. Use of esp32 or another uc for wifi connection to central server. Creation of server software api to communicate with all devices. API talks to an existing MSSQL database with all information about pricing, customers, ... Need to register new devices. This will assign an id to it and define the pricing that it should use for the transactions. Prices that a device is using are centrally managed and can be changed. This information is sent from the server to the device. Users can use an rfid card to pay and to start a transaction. (using relais output or serial communication) The card stores the amount of money that still can be used. With every transaction, the amount is updated on the card and will sync to the central MSSQL database on the server. If the device was unable to send the transaction to the server, it will store the transaction on the card for later synchronisation State information about the transaction is displayed on an lcd We want to have as much logging as possible about all the transactions going on. For this reason, devices send log information to the server. If they are not able to do this, logs will be stored locally in flash (with log rotation in case flash gets full) for later upload. Devices register transaction and log data with the correct time information. For this reason, devices are able to sync their internal clock with the server. Possibility to fix issues in the firmware and optionally add new features in the future without having to remove the microcontroller from every device. For this reason, devices support over-the-air upgrades. RFID cards are formatted Mifare cards with changed keys. Cards are preformatted and a unique ID is stored so no other cards can be used. Money will be added to the cards using an external payment device (money stored on card and in MSSQL customers table ) - this is not part of this job
项目 ID: 16353135

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远程项目
活跃6 年前

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14威客以平均价€2,869 EUR来参与此工作竞价
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Dear Sir, I am an highly skilled board designer who has over 17 years experience on complex PCB design. I can provide you design service from schematics entry to PCB layout. I can also provide the prototype service. My expertise is board design, component selection etc.... Please message me if you are interested. We can talk more. EDA tools: ALTIUM17, PADs, Orcad, eagle8.0 Thank you!
€2,500 EUR 在30天之内
4.9 (103条评论)
8.3
8.3
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Hi I am experienced embedded system designs. Please have a look at my profile I assure you quality work and on time delivery please get in touch to discuss it further Regards
€3,000 EUR 在30天之内
4.9 (192条评论)
7.8
7.8
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Hi sir, We already done very similar project in which we designed the mesh network based on ESP32. we have read your project and we can do it for you. We can give you very good solution for your project. Let discuss more with us. We are very professional team who are dedicated in doing these projects. we are expert in hardware development, software development. IOT is our strong point. We can do this project for you. Let discuss with us in details. Regards, Ahmad Lead Tech Engineer TURKTRONICS
€1,500 EUR 在22天之内
4.8 (43条评论)
6.6
6.6
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Hi there, I am electrical engineer with 18 year experience , I have worked with several types of payment gateways and systems from year 2000 including rfid based, just the controller won't solve the problems. Kindly send me a message .
€2,666 EUR 在30天之内
4.6 (19条评论)
6.5
6.5
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Hi, I am a post graduate power electronics engineer and having very good experience in product design and development. I am excellent in embedded design & programming using pic, dspic controllers and MATLAB codding for Power projects, Boot loaders, Bluetooth & GPS designs,CAN communication, EEprom. UART , RF circuits ,Protocols for networking, wi-Fi routers,OBD diagnosis with CAN bus protocols, Electrical vehicles and AC drives, stepper motor controls. I designed sine wave inverters for standalone and grid tie Inverters. I designed projects like Off line UPS up to 3 KVA, synchronous rectifiers, Solar MPPT chargers, Solar trackers, Battery chargers ,Grid tie inverters design with PLL and feedback control circuit emergency light of 66W and Online UPS control cards, Battery Charging power supplies, LED drivers for PWM controlling and dimming, SMPS, Power supplies. I have experience in schematics and PCB design experience in Altium and ORCAD. I am ready to work for you. Please contact for further discussion
€5,555 EUR 在100天之内
4.9 (27条评论)
6.2
6.2
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Hello, Have a great day. We will take care of full product development of product. Please feel free to contact us. Best Regards, I-TECH team.
€3,000 EUR 在30天之内
4.5 (29条评论)
6.8
6.8
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I am an electronic engineer with more than 10 years of experience. I work with a team of engineers and we have worked on complete product developments before. I can work on this and provide you with a prototype. Other than that you will have all design files needed to replicate this. Please contact me to discuss details.
€2,000 EUR 在50天之内
4.9 (13条评论)
5.6
5.6
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We are a team of experts with more than 15 years of experience in the field of embedded systems, electronics, prototyping and PCB layouts. I assure you the best solution for your work. Regards Ch
€2,500 EUR 在30天之内
4.7 (55条评论)
6.1
6.1
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We are a team of engineers having expertise on embedded domain. We have worked on several embedded linux/android SBC like AM335x-sk, Wandboard, Dragon Board, Pi2&Pi3, Beagle Bone Black, C.H.I.P, Orange-Pi-Zero etc as well as Microcontroller Development Boards like Arduino, PIC and STM32 we have worked with various build system including make, busybox, buildroot, yocto, openwrt, android etc. BLE, IOT and Wireless Technologies: 6LBR, contiki, openthread on CC26XX platform, TI-BLE stack(v2.20) TI-sensortag CC2650 (with debug_dev_pack and lcd_dev pack),TI-Launchpad, Keyfob(CC2541) and CC2540, CC-Debugger, NodeMCU(ESP8266) We have worked with freeRTOS on few platform like RPI and ESP8266. we have interfaced RFID with ESP8266 on SPI(FreeRTOS) and pushed data to local server. Please check our profile for more information.
€3,333 EUR 在30天之内
5.0 (5条评论)
4.0
4.0
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Click on that__CHAT__button below so that I can ask a few questions concerning the project. I have read all the provided instructions and I am the right person to work on RFID task
€2,500 EUR 在30天之内
0.0 (1条评论)
0.0
0.0

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BELGIUM的国旗
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5.0
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会员自5月 23, 2017起

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