In a business working with coin acceptors for their services, I need to add an interface similar to this in the photo so that I 'll get a barcode to the rs232 output similar to the value of the coin inserted.

The interface appeared is already working for ten years now but now I need to add machinery with these different coin acceptors in the photos.

I got all the related details with the board schematics and electronic diagram in case that it helps.

I got also the barcode list related to coin values

the board is based on Atmel At89s52. I don' have the ic firmware from the previous developer.

At the input side of the board, we got 8 independent inputs that have to recognize the pulse signals from the coin acceptor output.

Best regards

Beceriler: Elektronik, Mikrodenetleyici, Elektrik Mühendisliği, C Programlama, Yazılım Mimarisi

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İşveren Hakkında:
( 0 değerlendirme ) Greece

Proje NO: #29705415

Bu iş için 11 freelancer ortalamada €990 teklif veriyor


Hello, I've good experience designing interface convertion circuits, if you have all information available I think we can make a new circuit and develop the firmware to output the correct rs232 code. Please send me t Daha Fazla

€1125 EUR in 15 gün içinde
(8 Değerlendirme)

Hello, In our team we have an Engineer with about 20 years of strong experience in programming of IoT (Internet of Things), Microcontrollers and especially Arduino controllers as a result we can successfully complete Daha Fazla

€1111 EUR in 10 gün içinde
(14 Değerlendirme)
(12 Değerlendirme)

Hi, I am Electrical and Electronics Engineer with 14 years experience. I have good experience in programming AT89S52. You can check my portfolio for the projects completed using AT89S52. Can you share the data sheet of Daha Fazla

€750 EUR in 30 gün içinde
(11 Değerlendirme)

Hello sir, i'm embedded systems engineer, i already worked on complex electronic systems like sine wave inverter, DC/DC converter, interfaces to manage actuators, RS232 interface. i see that you need to make interfac Daha Fazla

€1200 EUR in 7 gün içinde
(15 Değerlendirme)
(35 Değerlendirme)

Hi I can help you build converter circuit and its firmware so we can emulate coin inserted by scanning barcode, i have many experience in rs232 interface. i can even make it accept both coin and barcode if you like. l Daha Fazla

€800 EUR in 14 gün içinde
(7 Değerlendirme)

Hello, I'm an Electrical Engineer .I have many Experiences in Matlab, Microcontroller, Arduino , sensors ,PLC’s, SCADA system, circuit design , PCB ,also I have experience in programming that connect electronic to de Daha Fazla

€1200 EUR in 7 gün içinde
(7 Değerlendirme)

Hello, I am an Electrical Engineer with 30 years’ experience of Customized Product Development for Instrumentation and Control applications. I am based in Kolkata (India) and running a business in the name of "Zetek S Daha Fazla

€750 EUR in 15 gün içinde
(1 Yorum)

Hi,how are you doing. Ive read the project description and my team i fully equipped to it on and complete it. We are a team of mechatronics and electrical engineer with expertise in embedded systems and we have worked Daha Fazla

€780 EUR in 7 gün içinde
(3 Değerlendirme)
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