Tim Crenshaw
Embedded Systems Engineer at DEFT Dynamics- Claim this Profile
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English Native or bilingual proficiency
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Bio
Experience
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DEFT Dynamics
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United States
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Venture Capital and Private Equity Principals
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1 - 100 Employee
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Embedded Systems Engineer
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Sep 2021 - Present
• Built mobile applications for iOS and Android to interface with various smart devices through Bluetooth and integrate various web services including AWS, Parse, MQTT, and InfluxDB. (Dart, Flutter, Swift) • Developed embedded firmware for various internet connected devices and added support for various peripherals including BLE, GPS, CanBus, and NMEA2000. (C, C++) • Developed applications to gather, analyze, and visualize various large data sets from a variety of different sources (Python, C++, OpenCV). • Developed scripts to control and log data from various Smart Home peripherals (Python). • Designed schematics and printed circuit boards for various IoT devices using the Nordic nRF series microcontrollers and various peripherals. Show less
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Hargrove Engineers & Constructors
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United States
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Industrial Machinery Manufacturing
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700 & Above Employee
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Controls Engineer III
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Aug 2017 - Sep 2021
• Developed software tools to automatically generate code for PLC and DCS systems from various databases, allowing projects to be completed more efficiently. (Python, SQL, VBA). • Created software to interface with PLC and DCS systems through various communication protocols to aid in the testing and commissioning of these systems (Python). • Designed, implemented, and tested continuous process control strategies for specialty chemical, and pulp and paper applications (DeltaV, Allen Bradly ControlLogix). • Designed, implemented, and tested control strategies for batch applications in the chemical and pharmaceutical industries (DeltaV, Allen Bradly ControlLogix). • Performed onsite commissioning and testing with clients to ensure control strategies functioned correctly and efficiently. Show less
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University of Alabama
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Tuscaloosa, Alabama
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Graduate Research Assistant
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May 2016 - May 2017
Bio-Impedance Measurement PCB and Data Modeling Project • Designed PCBs to allow a Keysight Impedance Analyzer to take Bio-impedance measurements • Performed optimization and filtering routines on bio-impedance data to develop models for the data • Designed a PCB to be an analog front end for AD5933 impedance converter to allow small impedance measurements with a tetra-polar electrode configuration. Wearable Wireless Embedded System Project • Designed PCBs for a network of wearable embedded systems to send and receive data in real time over a Wi-Fi network. • Populated, tested, and debugged PCB designs during PCB design cycle. • Developed software for ESP8266 based micro-controllers in C++ to communicate wirelessly with other devices on the network. Laser Communication System for a CubeSat Satellite Project • Designed PCBs for a laser communication system. • Developed software for AVR based micro-controllers in C and AVR Assembly to encode and send data via a laser and receive/decode the data on another device. FPGA Training Device Development Project • Created an FPGA training board to help teach undergraduate students how to use FPGAs • Designed PCBs that added numerous peripherals to an Altera Cyclone IV FPGA via I2C, SPI, and UART communication protocols. • Performed electrical testing on the PCBs after fabrication and population to ensure complete functionality Show less
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Southern Company
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United States
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Utilities
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700 & Above Employee
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Electrical Engineering COOP
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Aug 2013 - May 2015
• Tested power substation equipment and substation protection schemes to ensure correct operation under fault conditions • Verified and corrected all substation designs for each project • Calculated power flow to verify accuracy all substation meters and equipment • Tested power substation equipment and substation protection schemes to ensure correct operation under fault conditions • Verified and corrected all substation designs for each project • Calculated power flow to verify accuracy all substation meters and equipment
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Education
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University of Alabama
Master of Engineering (M.Eng.), Electrical and Electronics Engineering -
University of Alabama
Bachelor of Science (BS), Electrical and Electronics Engineering