Lawrence L. Profile

5.0

(8 reviews)

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$10 USD / hour

cebu city,

philippines

$10 USD / hour

It's currently 8:03 AM here

Joined October 20, 2014

1 Recommendation

Lawrence L.

@tokumei

5.0

(8 reviews)

5.2

$10 USD / hour

cebu city,

philippines

$10 USD / hour

100%

Jobs Completed

100%

On Budget

100%

On Time

18%

Repeat Hire Rate

Hardware Design Engineer | PCB Layout | Firmware

I am a hardware engineer with 6+ years of experience working in engineering, research and development, testing and problem solving in computer industries. Excellent knowledge in computer architecture and design practice. Primary focused on electrical-related continuous and development engineering activities. Besides working on hardware, I am an experienced firmware/software guy too and interested in doing DIY projects and hobbyist stuffs. I consider myself a highly responsible, respectful, self-motivated, creative, with initiative and punctuality. I am also capable of working indepedently or as part of a team and ability to make tough jobs quickly.

See all PCB Layout Designers in Philippines

Contact Lawrence L. about your job

Portfolio Items

A PIC microcontroller board with a voltage controlled oscillator and a inverted F Antenna

PIC24FJ128GL302 MCU Board

Working on a thesis project with some simulation work in Wokwi

Hardware used:
- ESP32 WIFI/Bluetooth module
- Adafruit Optical Fingerprint Sensor (ZFM-20 series Fingerprint Identification Module)
- ILI9341 TFT Color Screen LCD Display Module with Touch
- Servo motor
- Solenoid door lock

ESP32 Fingerprint Sensor Based Door Lock Security System

ESP8266 WiFi Switch

A 2-layer pcb shield compatible for NodeMCU and WeMos WIFI module. This design was used for test and debug purposes.

NodeMCU WeMos IO Shield

This device is a 3-Port USB 3.1 Gen 1 Portable Hub, SD Reader with power bank function.

Features:
- USB Type C Receptacle Charging Input Port (Input: 5V to 20V)
- 3 x USB 3.1 Type A downstream port (Power: 5W per port)
- 1 x SD card Slot
- With LiPo Battery Cell as power bank (Output: 14.8V to 16.8V, 4A max.). Up to 60 watts power output.
- Soldering points for USB C cable (data and power) connected to host. Supports to charge latest MacBook with USB Type C port

The board is consists of 5 main blocks: USB Power Delivery enabled Type C with charge-through functionality, USB 4-port hub, SD card Reader, power supply and LiPo cell battery charger circuit.

3-Port USB3.0 Hub + SD Card Reader

This is a wearable device that uses Bluetooth Technology.

- nRF52840 Bluetoorh Chip
• BMI160 Accelerometer + Gyroscope
• BMP280 Pressure (Barometer) + Temperature
• BMM150 Magnetometer
• LTR-329ALS Ambient Light
• 8MB of FLASH memory
• Buttons/LEDs
• Coin Cell Battery 3V
• Lithium Battery Charger Circuit
• Bluetooth chip antenna 2.4 GHz (BLE 4.0)
• External NFC antenna

nRF52840 Bluetooth Wearable Device

Reviews

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Showing 1 - 5 out of 8 reviews

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5.0

€1,250.00 EUR

MAAP AACES

As usual, it's a pleasure to work with Lawrence. Lawrence has extensive technical knowledge, always proposing wise solutions when parts are not available. His communication skills are excellent. Always within budget and timelines, very professional. Our company has decided to reschedule its activities in order to incorporate Lawrence's busy schedule, considering Lawrence as an essential member of our team! Thank you, Lawrence.

Louis F.

@LouisFarge

•

11 months ago

5.0

$417.31 USD

Project for Lawrence L. -- 20/12/14 17:59:11

Lawrence's PCB designing and communication skills were top-notch. I asked for additional milestones and he was very accommodating, spent extra time on it, and always gone beyond the tasks needed to help us improve our original designs, and the deadlines were always kept. I´m very happy with the result and I will work with him again in the future.

C# Programming

C++ Programming

Circuit Design

Bluetooth Low Energy (BLE)

+1 more

Nawaf A.

@mailm

•

2 years ago

5.0

€875.00 EUR

PCB designer

He is fast, efficient, extensive knowledge in electronic. Very precise in his work. Always comes with proposals to either improve the overall disign or when he senses a risk. Delivers on time. Its a real pleasure working with him. He will definetely remain the person I will go to for hardware engineering solutions. I am trully impressed !

Electronics

Microcontroller

Electrical Engineering

PCB Layout

Circuit Design

Louis F.

@LouisFarge

•

2 years ago

5.0

₹3,400.00 INR

circuit schematic, Gerber and BOM

He is a total expert in his work. Always ready to make all the required changes. Works till he gets the job done... He will be doing all my electronics projects in the future for sure... A+++++

PCB Layout

Circuit Design

Circuit Board Layout

PCB Design and Layout

Deepak J.

@deepakjain1904

•

3 years ago

5.0

£30.00 GBP

Design a PCB with an led array and provide the gerber files

Great work. Delivered on time and within budget. Will use again if needed for more work.

Electronics

Electrical Engineering

PCB Layout

Dominic B.

@Piersman

•

3 years ago

Experience

NCR Corporation

Dec 2015 - Present

Key Roles and Responsibilities - Supports electrical-related continuous and development engineering activities in NCR Retail and Hospitality products such as POS motherboards, kitchen controllers, media player, servers, I/O boards, Daughter cards and peripheral boards. - Schematic capture using Allegro Cadence and supports layout team for component placement and EMC/EMI counter-measurements - Coordinates with suppliers and manufacturers for engineering board samples and prototype procurement

Self-Employed

Dec 2013 - Present

Working on Microchip PIC18, Arduino, TI MSP480, SiLabs C8051, Raspberry Pi, ESP32 for automation test projects. i am also capable of making GUIs and Apps using Visual Studio and Android Studio. Knowledgeable in : - C/C++ Programming - C#/.NET Programming - Python - Embedded system and Firmware development - Arduino coding - IoT Devices - Linux

Self-Employed

Dec 2013 - Present

Proficient in EAGLE, KiCad and EasyEDA, working in schematic and high speed multilayer boards. Knowledgeable in DFM guidelines, product lifecycle management and BOM costing. Previous projects: - IoT modules/sensors like ESP8266, ESP32-CAM, XBEE, Rpi Compute Module 4 - Microcontrollers such as STM32, ESP32, SAMD21, RP2040 - GSM/GPS Tracker (SimCom) (HW and FW development) - NFC (NXP PN532) - Bluetooth (nRF52840) - USB3.0 hub - FPGA (Artix-7) - Smoke Detector - Oximeter - Mini UPS - Routers