PIC Based Coffee Machine Control

Too many losers and Tyre Kickers on this site. If you can NOT READ THIS SPEC, PLEASE DO NOT BID!!!

Do NOT offer to write it in C - the request is for Assembler!

Coffee Machine Controller

This is an URGENT requirement for a client. The board will be based around a Microchip PIC16F1527 - the hardware design is 95% complete. You just need to sign off on the schematic and write the software. We will produce a board for you to test on;

8 Relay Outputs

6 keyswitches + 6 LEDs x 4 scan lines (multiplexed)

4 x Flow Sensor Inputs (logic pulse proportionate to flow)

4 x Water Level Probes (logic from Op-Amp pulled Low when water present)

2 x RTD Analogue Inputs

16 x 2 LCD Display in 4 bit mode (4 data + 2 control preferred)

1 x Serial Connection (for future use)

1 x Buzzer output

1 x Real Time Clock (2 x I/O)

1 x PWM Output (fixed at approx 500Hz


Menu system - ENGLISH only to start, but will introduce other languages as time permits and market requires it.

The 'basic' description of function is 4 groups of 6 buttons. Of those 6 buttons, one is 'manual' - simply toggles it's relay on and off. Another 4 are 'portions'. Press a button, grab a value from EEPROM and monitor the corresponding flow sensor for interrupts. If the count reaches EEPROM value, then that drink is finished. Last button is simply timed. Time setting stored in EEPROM.

Will start with 'basic' functions to start, then add new features later as a separate 'software upgrade' project that the successful candidate would have first option on.

You MUST write and submit WELL COMMENTED and 'modular' ASM code. Please do not bid if you want to write this in a higher level language.

We will supply you with one or more new completed boards - ready to program. We can also supply you with one of the client's old boards - fully operational. FULL function spec provided to successful candidate.

Prefer candidates to be based locally in Australia - should a face to face meeting be required - otherwise, we can communicate via the Internet.

This is an important client and is a good opportunity for us. More work will follow.

Happy bidding!

Skills: Electronics, Embedded Software, Microcontroller

See more: pic based, pic based coffee machine control, rtd, coffee machine software design, us basic english test, system sensor, requirement spec, logic supply, future electronics, flow x, Control 4, australia work opportunity, amp control, ready in sign language, i control, us english level 4, tyre, timed, the add water, PWM, permits, microcontroller design, manual software test, machine language, machine design

About the Employer:
( 5 reviews ) Dee Why, Australia

Project ID: #1616840

14 freelancers are bidding on average $1264 for this job


hi i can do it please see PMB. regards

$1000 AUD in 20 days
(6 Reviews)

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of ha More

$1000 AUD in 12 days
(0 Reviews)

Hi!! Greetings We are group of developers working on various technologies in electronics and PLC. We had designed Industrial PLC Project for companies in India. We are intersted for doing your project.

$1200 AUD in 90 days
(0 Reviews)

I have degrees in Electrical Engineering and Computer science. I also teach courses in microcontroller programming for a technical institute. With a good set of requirements and hardware to test on I'm confident I ca More

$1000 AUD in 20 days
(0 Reviews)

Hi, I've experience in developing firmware with assembly on 8051, I've programmed external I/O, ADC, timers and counters. I can deliver good results.

$1000 AUD in 15 days
(0 Reviews)

Hello, i'm an engineer very experienced in think kind of projects. I will write high quality assembly code that does exactly what you want and suggest improvements if i find any. From the day that i receive the product More

$1200 AUD in 5 days
(0 Reviews)

Dear. Please check your PMB. Regard. Goldstar.

$1000 AUD in 14 days
(0 Reviews)

We are providing this service so affordable because we want to prove our expertise, build a longterm relationship so when you have other IT needs, and substantiate a Freelance record of good customer relations. The fol More

$1400 AUD in 7 days
(0 Reviews)

Hello, I can do this ;)

$1000 AUD in 30 days
(0 Reviews)

Hi, we are a engineering consulting company and we have many experience in this field. Please, Mr. Dalcorn see our profile and choose the our professionalism, choose the Italian Engineering. Best Regards

$900 AUD in 38 days
(0 Reviews)

I thought I already bid on this project.

$1500 AUD in 60 days
(0 Reviews)

I am a very experienced Microchip Design Partner with well over 20 years experience in h/w and embedded s/w development. I write all my PIC code in assembler unless specifically asked to write in C. The reasons I am bi More

$1500 AUD in 21 days
(0 Reviews)

This project writing with Assembler (MPLAB)codes,Original ASM Codes Provided with HEX File.10 years Experience of Embedded Systems Design.

$1000 AUD in 7 days
(0 Reviews)

Hello, I can write it entirely in .asm for pic16 series. Check my PM. Regards

$3000 AUD in 60 days
(0 Reviews)