Robert Scheffler Email & Phone Number

Bellevue, WA, US

Python and JavaScript programming for embedded IoT devices using a Raspberry Pico-W wireless controller. Excellent understanding on how hardware, firmware, and software interact in system designs. Current research includes animal communications and touch screen interfaces for dogs.

Seattle, WA, US

Performed failure analysis of returned RFID chips from customers using microscopes, VNA tools, oscilloscopes, bench power supplies, and RF measurement equipment. Wrote software scripts to control readers and IC's for efficient product testing using Python and C#. Researched customer proposed RFID systems for possible future development.

Designed software test harness from scratch using two USB cameras to track deflected laser angle using Python and OpenCV. Wrote code to automate oscilloscopes, function generators, and meters to collect data from DUT. Troubleshot hardware in the loop issues for gain and design problems.

• Wrote creative UWP application in C# to monitor multiple power points in real time. Installed at top of Start Menu on internal builds. Used RAD planning style and delivered well tested quality tool on time.
• Designed 2 small schematics to interface I2C sensor using Allegro tools. Designed flex circuit board.
• Excellent understanding of hardware, software and firmware and how they interact.

Redmond, Washington, US

Wrote system test plan and black box test cases to ship new Bluetooth product. Identified common end to end usage scenerios and built test matrix. Researched classic Bluetooth protocol and BLE. Tested device profiles and scenarios. Wrote small C++ and C# automation tools. Tested RF interference, co-existence, and range.

Redmond, Washington, US

- Developed robot test system from scratch to measure tablet touch and pen accuracy on Surface tablets. Programmed in C# for three years and provided Microsoft with a highly reliable system for precise measurements. Factory adopted methods.- Developed real time heat map in C# for instant test feedback so errors can quickly be determined before performing a.

- Implemented USB stack on a Microchip microcontroller for a PC input product. Confirmed timing with protocol bus analyzers of I2C, SPI, and critical timing sections. Wrote C functions in firmware.- Designed 20 component SMD circuit board and fabricated.- Wrote drag and drop UI editor in C#.