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$30 USD / hora
Bandeira do(a) SRI LANKA
kotte, sri lanka
$30 USD / hora
Atualmente, está 7:20 AM aqui
Ingressou em julho 12, 2009
7 Recomendações

Sinhala Kumarage L.

@EEmbedded

 4,8 (36 avaliações)
7,0
7,0
82%
82%
$30 USD / hora
Bandeira do(a) SRI LANKA
kotte, sri lanka
$30 USD / hora
93%
Trabalhos Concluídos
100%
Dentro do Orçamento
79%
No Prazo
22%
Taxa de Recontratação

Electronic and Electrical system designs

We provide personal Technical Support to product developments for Inventors and Entrepreneurs. We have extensive experience with 32/16/8-bit microcontrollers and processors from: - ST Micro STM32F series), ST micro (STR7 series), - Atmel (AVR, ATmega, ATtiny, AT91SAM), - Microchip (PIC32, PIC18F, PIC16F, dsPIC etc), - Texas instruments TI ( MSP432, CC3220, CC3120, CC2640R2F, CC1350, CC1310) We are contract manufacturers of PCBs and PCB Assembly with all required Product Certification for USA, Japan, Australia and EU. Applications - PC Applications ( Visual Studio, Java ) - Android Applications (Android Studio, Eclipse) - iOS Applications (Swift) - PCB - Altium Designer, Proteus, Eagle CAD Soft, Fritzing - Microcontroller - Arduino, IAR EWB, CCS, GNU Tool Chain - Communication - Bluetooth Low Energy, WiFi, GSM, Zigbee, RF, SATCom - BPM - Bonitasoft BPM
Freelancer Electronics Engineers Sri Lanka
Ver todos Electronics Engineers em Sri Lanka

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Portfólio

3702036
Bluetooth Low energy Device is gathering data from sensors and send that data to Android App automatically
Bluetooth Sensor device and APP
3702016
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
3701990
This Bluetooth Low Energy dongle accept characters from Android App and send them to PC like normal HID Keyboard.
Bluetooth Low Energy Dongle work as HID Keyboard
2063055
Texas Instrument CC2541 chip Based BLE Beacons and LiPo Battery charger for Proximity Android APP project.
Bluetooth Low Energy Tags
Texas Instrument CC2541 chip Based BLE Beacons and LiPo Battery charger for Proximity Android APP project.
Bluetooth Low Energy Tags
Texas Instrument CC2541 chip Based BLE Beacons and LiPo Battery charger for Proximity Android APP project.
Bluetooth Low Energy Tags
1729851
This was developed for calculate Air Filter life of Air Purification Systems of Surgical Environment. Project Content 1. PCB design 2. Firmware Development 3. Prototype Development 4. Production of 1000 units
Air Filter Life time Diaplay
1603314
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
3702036
Bluetooth Low energy Device is gathering data from sensors and send that data to Android App automatically
Bluetooth Sensor device and APP
3702016
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
Commercial samples of Bluetooth LE client and Master modules.
Bluetooth Low Energy Product Development
3701990
This Bluetooth Low Energy dongle accept characters from Android App and send them to PC like normal HID Keyboard.
Bluetooth Low Energy Dongle work as HID Keyboard
2063055
Texas Instrument CC2541 chip Based BLE Beacons and LiPo Battery charger for Proximity Android APP project.
Bluetooth Low Energy Tags
Texas Instrument CC2541 chip Based BLE Beacons and LiPo Battery charger for Proximity Android APP project.
Bluetooth Low Energy Tags
Texas Instrument CC2541 chip Based BLE Beacons and LiPo Battery charger for Proximity Android APP project.
Bluetooth Low Energy Tags
1729851
This was developed for calculate Air Filter life of Air Purification Systems of Surgical Environment. Project Content 1. PCB design 2. Firmware Development 3. Prototype Development 4. Production of 1000 units
Air Filter Life time Diaplay
1603314
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples
Features of Device 1. Temperature control using PID loop 2. Battery operated 3. Temperature Data logging 15000 samples with time stamp. 4. Connects PC through USB port 5. Set point adjustment via PC Software 6. Graph for past data
Portable Temperature stabilizer for Medical Samples

Avaliações

Mudanças salvas
Mostrando 1 - 5 de 35 avaliações
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1,0
£555,00 GBP
Project 15605092 has been deleted
communication is very poor very slow
F
Bandeira do(a) Adam F.
@Fiddu8
•
há 6 anos
4,4
$5.000,00 USD
Design a massage table pressure sensor with wireless ready light -- 2
I enjoyed the process of working with Lasantha
Wireless
Electronics
Microcontroller
Product Design
Circuit Design
Avatar do Usuário
Bandeira do(a) Randy H.
@RandyHill
•
há 7 anos
5,0
$2.186,00 USD
Create a Android App to connect to BLE chip and program the chip CC2541 or other to get information from analog input and digital input
It was my first time to use freelancer, when I published my project, I received a lot of bids to do it. When I started talking with lasantha (Embedded), He understood immediately the project, by the way, he always gave me a support, feedback and how is the best way to solve the requirements. At the end, I got the excellent work. Lasantha and his mates have a very good skills to develop bluetooth 4.0 communication, programming cell phones app, and drawing of final diagram of A-PCB. I sent the A-PCB to my supplier in china, to manufacture it. I received the A-PCB without problem, miniaturized layout, lowest consumption, lasting battery draining, all the requirements were covered. I'm really happy with it. I recommended him a lot.. I'll hope to work with him again..
Electronics
Android
PCB Layout
Arduino
Bluetooth Low Energy (BLE)
Avatar do Usuário
Bandeira do(a) Ricardo V.
@RicardoVasquezR
•
há 8 anos
5,0
$526,00 USD
Find me a fabricator
Lasantha was fantastic to work with. I have previously hired him and would recommend his work to others.
Electronics
Android
Microcontroller
PCB Layout
Arduino
Avatar do Usuário
Bandeira do(a) Thomas G.
@TLGriffiths
•
há 8 anos
4,6
$588,00 USD
Arduino Barcode Reader and Solenoid
Good work. Easy to work with.
C Programming
Arduino
W
Bandeira do(a) Dave R.
@wampus
•
há 8 anos

Experiência

Magnetic Card Reader

Mycardreader.com
ago. 2013 - dez. 2013 (4 meses, 1 dia)
PCB design, Firmware development, Prototype development

USB HID Controller

WigglyAmps
USB HID using Teensy 3 development tool

Educação

BSc (Eng) Honors

University of Moratuwa, Sri Lanka 2006 - 2010
(4 anos)

Qualificações

AMIESL

IESL
2010

Publicações

Auscultation based stethoscopic diagnostic device for cardiac murmur identification

IEEE
In a healthy heart, there is no any abnormal blood flow takes place inside, in addition to the usual blood circulating pattern. However when the valves or tissues inside the heart are in diseased conditions, this usual blood flow pattern gets changed. As a result, abnormal sounds are produced with the normal heart beat sound. These abnormal sounds are known as cardiac murmurs. By identifying the murmur type doctors can diagnose the cardiac pathology related to that particular murmur type. This paper describ

Knowledge on heart patients through stethoscopic cardiac murmur identification for E-healthcare

IEEE
Cardiac murmurs are the sounds produced by the abnormal passage of the blood flow inside the heart due to the diseased valves or tissues. Identifying the type of the murmur can diagnose the cardiac pathology related to that particular murmur. This paper describes a researched digital stethoscope that can be used as a stethoscope as well as a murmur identification device. To capture the heart beat, a chest piece of a traditional stethoscope is used with a condenser microphone attachment. Then the signal is a

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Verificações

Freelancer Preferencial
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E-mail Verificado
Conectado ao Facebook

Certificações

vworker.png Foundation vWorker Member

Principais Habilidades

Electronics 22
Arduino 16
PCB Layout 15
Engineering 14
Microcontroller 14

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