In Progress

4x4 Matrix Keypad

I am looking for someone to design and build a stand alone device what will record key sequences on 4x4 matrice. Key sequences will be time stamp saved when is press enter key or after a period of times of inactivity. Led so can show some visual signals. USB TTL Serial Cables - FTDI for connection with computer to download data. A Windows compatibile software interface for computer to download password protected data from memory. We will use Atmel microcontroller and memory with MLF package for low power consumption and small layout PCB.

Skills: C Programming, Electronics, Microcontroller, PCB Layout, Visual Basic

See more: keypad interface 4x4, 4x4, LED MATRIX, matrix programming, matrix design, interface computer programming, design matrix, basic stamp programming, atmel c programming, small microcontroller, 10 keypad, Data matrix, atmel, 4x4 keypad, led microcontroller pcb, led layout, password usb, record time press key software, led power pcb, matrix layout, matrix key, power pcb design, atmel software serial, usb device power, pcb led layout

About the Employer:
( 1 review ) Torino, Italy

Project ID: #5022157

Awarded to:


hello sir, We have experience with USB, Wireless, WiFi and RS232 protocols using PIC, Atmel, STM, or Freescale ICs. Please see our profile for our past project. we have completed custom devices with nice feedbacks. More

$444 USD in 7 days
(12 Reviews)

21 freelancers are bidding on average $869 for this job


hi, i am an electrical engineer. i have expertise in embedded system design.i can help you with this project. looking forward for your reply and will discuss the project [url removed, login to view]

$2500 USD in 50 days
(36 Reviews)

hello i have experience in this, i have did it before, so i can help you do this thanks & best regards

$555 USD in 3 days
(28 Reviews)

I can do your project, I have 12 years of experience in design and development in electronics; kindly take a few minutes you can read reviews and my rating. Following shall be the phases of the project. 1. Speci More

$631 USD in 20 days
(10 Reviews)

HI, About ME : I am a programmer for 8 years and has perfect reviews on all my projects.I am a Expert in Delphi and Scjp, I have a Diploma in Electronics and a EEE (3rd year) student in NITW, india. i have expe More

$555 USD in 30 days
(19 Reviews)

Hello, I have been associated with Electronic design, PCB design and manufacturing for over 7 years. I have used various CAD/EDA tools for PCB design. Thanks & Regards, PCBDCS

$833 USD in 45 days
(32 Reviews)

I am experienced on designing system using Atmel AVR and I also design the circuit layout. Please check my portfolio to see my previous jobs.

$500 USD in 15 days
(20 Reviews)

Hi cardcod, I believe I may be able to help you with your project as I have had recent experience in similar applications. There is only one problem and that is I would want to use a PIC microcontroller with a built i More

$833 USD in 30 days
(8 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

$526 USD in 3 days
(17 Reviews)

Hello, We have a previous experience in design and implementation of PC interfacing System including USB, USB-to-Serial, and USB-TTL and we are very capable for this project. I understand from the requirements that More

$388 USD in 7 days
(2 Reviews)

I have a ready made design for this. I am using PIC in a 16 pin QFN package (4x4mm) or 14 pin TSSOP (6.5x4.5mm) and 24aa512 EEPROM. PCB size is 5x20mm for the TSSOP with about 1.5mm thickness with the components. Accep More

$833 USD in 3 days
(2 Reviews)

Hello, I'm electronic engineer with more than 10 years of experience. Have a lot of projects based on MCU from Atmel. The DataFlash can be selected from AT45DB series, which have the high capacity and low power consum More

$600 USD in 21 days
(2 Reviews)

Hi i can help you with extensive professional experience in Electronics (Digital, analogue & Embedded) design and development. I believe in quality work. Contact me and send me details. Feel free to ask me if you have More

$555 USD in 20 days
(1 Review)

Hello Sir, We deliver high quality and performance hardware systems, mainly specialized in Control systems. We design and build all kind of control circuits needed to control any system, carrying out process cycle More

$666 USD in 60 days
(2 Reviews)

Dear Sir, We are a team with both hardware and software engineer. We have extensive experience in embedded systems and PCB design. Your project seem very fit with our capability, because we can cover from hardware More

$555 USD in 15 days
(0 Reviews)

I am a masters degree holder in embedded systems and electronics system design.. Have done projects in avr micro controllers.

$277 USD in 7 days
(0 Reviews)

Hi I can design and code this for you in about 5 days. It could be based around an atmega328 MCU from Atmel and a Dallas RTC and a simple SD card holder fr recording the keystroke/timestamps. the USB interface can b More

$722 USD in 5 days
(0 Reviews)

Hello. I will be glad to help you. I'm: - developed by the device on the customer's specifications. - developing firmware for microcontrollers from Atmel (Mega, xmega, avr32). - development of PCB. I have a l More

$555 USD in 30 days
(0 Reviews)

Dear sir My name is Mohamed , I'm communication & Electronics Engineer I have a certifications from Microchip international company in Microcontroller and c programming language using PIC with Excellent degree More

$555 USD in 1 day
(0 Reviews)

Hi I have this already make since many years a go I have a few models the basic difference are if you want use battery or get energy from the machine and 2 more variants I can't explain here. Talk to me in private to g More

$5000 USD in 7 days
(0 Reviews)

I am an embedded system engineer and have implemented similar projects using various ATMEL microcontrollers e.g. T89C51AC2, AT324P. Five years experience with C,C++ and C# programming languages. Project Plan ------ More

$500 USD in 10 days
(0 Reviews)