Vinicius Fonseca Email & Phone Number

United States

United States

• Developed embedded wireless system solar powered with a complex analog front end and many different types of peripheral sensors. • Developed chamber with precise temperature control to characterize and calibrate gas sensors, making it possible to characterize sensors• Developed system to collect data from a batch of sensors at the same time reducing time for testing and calibration (Hardware, firmware and mechanical holder to hold sensors in place)

United States

• Developed a complete system (Hardware and firmware), to collect the analog signal from gas sensors and send it via BLE and UART• Developed a digital sensor module for easy integration of the sensor with other systems• Developed an Arduino shield to be used as a developing platform for customers and internal R&D• Developed 2 android apps, one for demo proposes and one for integration of the sensors with a Cloud services

Contagem, Brazil

• Developed and optimized 6 devices, choosing superior and inexpensive components and developed more efficient manufacturing processes; resulting in reduced production costs of 12% • Developed IoT gateway that had Wi-Fi, Ethernet, Bluetooth, Bluetooth LE and a proprietary protocol over a 433MHz radio as ways of communication using embedded Linux, resulting in a 30% faster than expected development time • Designed and 3D printed 2 plastic body prototypes for IoT products in-house making the prototyping process 60% faster• Developed 5 Proof-of-Concepts (PoC) for IoT products using Raspberry Pi and Arduinos, by using preexisting libraries, achieved a 30% faster development time• Developed 2 Bluetooth beacons using two different ICs for two applications; resulting in a longer range and prolonged battery life • Innovated and conceptualized ideas within team and provided technical support, resulting in 5+ product upgrades and 15+ new products• Scheduled business meetings with manufactures and distributors to further develop relationships, negotiate rates and learn of new technologies for future use in products to improve performance and reduce production costs• Opened and established new accounts with international manufacturers and distributors, reducing costs of purchased materials by 20-60%• Received all non-Portuguese speaking clients, lead and conducted all English speaking meetings, developed and cultivated relationships with American manufactures

Contagem, Brazil

• Tested 20+ home automation products that used RF technology, critically analyzed and selected best products to reverse engineer; improved technology for products, resulting in faster and more assertive development processes• Tested Bluetooth health tracking devices such as: oximeter, blood pressure monitors, body temperature monitor, body fat scales, fitness trackers and heart rate monitors, documenting their protocol to make products compatible and competitive to market• Developed iOS app to test products, making the testing process of the IoT products more efficient by 30%

Contagem, Brazil

• Troubleshot PCBs in laboratory, writing technical documents with recommendations for assembling components in the manufacture process, such as correct process to solder a component• Wrote project scope for an IoT gateway that was approved and generated a new family of IoT products

Belo Horizonte Area, Brazil

• Developed a device to automatically email health alerts when trigged by heath monitor devices• Introduced embedded Linux as a new development tool, resulting in a new product idea, a device to monitor defibrillator and other health devices • Wrote Linux bash codes to test health tracking modules such as oximeters and noninvasive blood pressure monitors, creating detailed documentation of performance• Wrote code to read audio files and play through pulse-width modulation (PWM) output of a microcontroller, eliminating the use of audio decoders and resulting in a $7 cut in bill of materials for each device