based Arduino or Esp32 MDB vending machine cashless vending code.

I have a project on Arduino (exapmle Mega 2560 ).

The Arduino should act as a cash receiver and send exactly the amount that I deliver via Bluetooth to the balance. I have a working code, but it only works on a few coffee vending machines. Where it does not work, it blocks everything with one code:

#define CSH_ACK 0x0100 // Acknowledgment, mode bit set.

I also have an insulator circuit.

The fact is that it works on one device. I think my code works on level 1 alone.

Taidot: Arduino, Mikrocontroller, Elektroniikka, Sähkötekniikka, Piirilevyn asettelu

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Tietoa työnantajasta:
( 0 arvostelua ) tbilisi, Georgia

Projektin tunnus: #29034742

Myönnetty käyttäjälle:


Hi, I gone through your project description. It's similar to my work experience. I have done multiple projects on Arduino and bluetooth. Hopefully I'm the suitable person for this work. I can provide best work with o Lisää

$244 USD 7 päivässä
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8 freelanceria on tarjonnut keskimäärin $126 tähän työhön


Hello, thank you for your job posting. I read your description about--Arduino I am a senior electrical engineer. I have plenty of experience in firmware development and micro-controller developments. I can write the fi Lisää

$30 USD 1 päivässä
(117 arvostelua)

Hi, Dear Prospective Client I have just read your job description carefully I have a degree in Electrical engineer and having experience of 4+ years I am working in the freelancing industry for the past 6 years. Durin Lisää

$140 USD 7 päivässä
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(29 arvostelua)

Hello there, I can help you in fixing the bug, just inbox me the code and I'll trace and/or fix, develop the code in a clean code manner to get the work done . Required Arduino and HC-05 is with me to test in real Ju Lisää

$50 USD 2 päivässä
(2 arvostelua)

Hello there. I hope to work with you because your project is very familiar for my past works. I have 3+ years experiences in Electrical Engineering & PCB Layout & Circuit Design. Hope further discussion about your proj Lisää

$100 USD 3 päivässä
(4 arvostelua)

Welcome Sir I can help you in successfully completing your project. I am an expert in the Arduino field. I have done many similar projects for this work. Send me all the details. Here are some of my work I unveiled an Lisää

$100 USD 4 päivässä
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This proposal is effective because it provides a clear, specific solution to the client’s problems. It opens with a value-oriented executive summary. The scope of services provides brief but informative summaries of th Lisää

$140 USD 7 päivässä
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