KEYPAD 4x4 Matrix with Eeprom storage

I am looking for someone who can make a 4x4 matrix keypad circuit ,PCB design and very low power consumption,on battery 3,7 v,

that it has an eeprom and i2c real time clock for the time [url removed, login to view] keypad entries should be stored in the eeprom with the time stamp and to be read into a [url removed, login to view] is needed the following :

the source code ,pcb,and the software.

Form of data extracted from eeprom:


Keys | Time


1234 | 14:32:45

6839 | 15:05:28

Færdigheder: Elektrisk Ingeniørarbejde, Microcontroller, PCB Layout

Se mere: matrix design, looking for electrical engineering, design matrix, microcontroller design, microcontroller circuit design, matrix, I2C, electrical power, Electrical CIRCUIT, Data matrix, circuit pcb, microcontroller software code, 4x4 keypad, electrical pcb, power circuit, code software microcontroller, code real time clock, power pcb design, source code pcb, storage battery, battery pcb, pcb design software, circuit pcb design, keypad 4x4 matrix, power circuit pcb

Om arbejdsgiveren:
( 0 bedømmelser ) Romania

Projekt-ID: #6004233

38 freelancers are bidding on average $968 for this job


Hello, I have done many projects for very small and low power data loggers.. I already have design for a keypad/magnetic data logger. Please see my previous projects and reviews for more details. I am sending a f Mere

$2526 USD in 30 dage
(40 bedømmelser)

Hello sir, I am [url removed, login to view] sekhar,M.tech.[PHD]. even though i am new to freelancer ,i have 10+years experience in this field.i can support u finish this job. i can assure u quality service and quality [url removed, login to view] aft Mere

$750 USD in 4 dage
(37 bedømmelser)

Hi Sir Thanks for having a look at my bid. I am an expert embedded system designer. I graduated with 92 percent marks. Sir I am new to freelancer. It is very easier task for me. Bid is just a way to approach you. I CA Mere

$750 USD in 2 dage
(179 bedømmelser)

Dear Sir, We have previous Experience on 4x4 Key Pad readers. Please see our previous project on Keypad Data Logger, I did Programming work on that project. My Proposal. 1. Atmega328 / Atmega128 based Control Mere

$1111 USD in 25 dage
(22 bedømmelser)

Hi, I am a Mechatronics and Control Engineer, you can check my work on my blog [url removed, login to view] , I have worked on many such project, I will design the complete project on my side and will show you the Mere

$1000 USD in 20 dage
(35 bedømmelser)

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 [url removed, login to view] in Electrical and Electronic Engineering ( NIT Mere

$750 USD in 20 dage
(30 bedømmelser)

I believe I have all the right knowledge and experience to implement this project for you. I have extensive knowledge in interfacing external hardware to micro controllers and PC’s, please see my profile for some deta Mere

$1500 USD in 14 dage
(24 bedømmelser)

hello, i am an electronics engineer and an embedded system designer with expertise in both analog and digital design. i also have good PCB design skills. i am qualified to work on this project. looking forward for you Mere

$800 USD in 3 dage
(50 bedømmelser)

Hi, i can help you. I will use Proteus to simulate the system. Apart from this i will also provide the following. 1. Schematics 2. Source code. 3. BOM (bill of material) 4. Gerber files (auto pick and place fi Mere

$1388 USD in 20 dage
(38 bedømmelser)

A proposal has not yet been provided

$1361 USD in 20 dage
(13 bedømmelser)

Hello i can do this thanks ..............................................................................................................................................................................

$1222 USD in 10 dage
(33 bedømmelser)

Dear Sir. I can develop such a project. As result you will get: 1) schematic in the Altium and pdf formats; 2) routed pcb in the Altium format; 3) routed pcb --> gerbers + nc-drill (for production); 4) firmware a Mere

$800 USD in 31 dage
(15 bedømmelser)

Hi , I am an electronics engineer and an Embedded expert. I have done this type of work before and I can guarantee you work on time with quality guaranteed. Please feel free to contact me regarding the budget and the p Mere

$1000 USD in 15 dage
(15 bedømmelser)

Hello. I am a Veteran Embedded systems designer with over 9 years in the industry for developing solutions for Industrial Automation, Machine control and Data Acquisition. I have completed a number of Product designs w Mere

$888 USD in 15 dage
(6 bedømmelser)

I'm Electronic engineer from university of Moratuwa and I would like to use my extensive Embedded system design and PCB design knowledge to do this projects . I'm so experienced with Arduino, PIC ,DSpics and expert wit Mere

$750 USD in 14 dage
(10 bedømmelser)

Hi, We are a team of electronics engineer with more than 10 years of experience in designing and developing various digital and embedded systems... Since we help engineering students to complete their accademic Mere

$750 USD in 5 dage
(7 bedømmelser)

Hi, I'm an electronics engineer with more than 5 years of experience in designing and developing various digital and embedded systems... I've done the same project before, please check my completed project...:-) Mere

$750 USD in 10 dage
(11 bedømmelser)

I already completed such project. 512kbit EEPROM. It holds 16000 key presses memory. Ultra low consumption. On a single ML614 battery 3.2 mAh it works more than 3 days!!! Menu via hyper terminal. Exactly what you ar Mere

$1000 USD in 3 dage
(2 bedømmelser)

Hi, I have 16+ years of experience in hardware and software product design. I have completed many microcontroller based produts on freelancer itself. For this project we can use a very low power micro controller Mere

$833 USD in 20 dage
(5 bedømmelser)

Hello, Let me introduce myself I am yasir amir khan. I am electrical engineer, running an online consultancy business, with several years of project related experience. Please check out my profile. and search my name o Mere

$750 USD in 5 dage
(9 bedømmelser)