4x4 Matrix Keypad

Concluído Postado Oct 12, 2013 Pago na entrega
Concluído Pago na entrega

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.

Programação C Eletrônica Microcontrolador Layout PCB Visual Basic

ID do Projeto: #5022157

Sobre o projeto

20 propostas Projeto remoto Ativo em Oct 14, 2013

Concedido a:

EEmbedded

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. Mais

$444 USD em 7 dias
(33 Comentários)
6.9

20 freelancers estão ofertando em média $888 nesse trabalho

pcbdcs

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 dias
(132 Comentários)
6.8
quang102

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 dias
(38 Comentários)
6.5
Davelelievre

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 Mais

$833 USD in 30 dias
(31 Comentários)
6.3
scribblerspk

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 Mais

$631 USD in 20 dias
(11 Comentários)
5.5
warudj

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 dias
(25 Comentários)
5.2
muhammadnagy

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 Mais

$388 USD in 7 dias
(6 Comentários)
4.9
buxusa

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 Mais

$833 USD in 3 dias
(5 Comentários)
4.2
alekol

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 Mais

$600 USD in 21 dias
(2 Comentários)
4.0
ExpertProEng

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 Mais

$555 USD in 20 dias
(2 Comentários)
3.9
melfager

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 Mais

$666 USD in 60 dias
(1 Comentário)
2.6
LordAlent

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 Mais

$555 USD in 30 dias
(0 Comentários)
0.0
quancoltech

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 Mais

$555 USD in 15 dias
(0 Comentários)
0.0
knnarayanan

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

$277 USD in 7 dias
(0 Comentários)
0.0
HLsystems

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 Mais

$5000 USD in 7 dias
(0 Comentários)
0.0
jiteshverma

We can provide readymade boards at low cost. I am director of a small start-up company operating from India. Get in touch with me for further discussion. Regards, Jitesh

$250 USD in 7 dias
(0 Comentários)
0.0