Senior Embedded System Engineer

12/2015 – 12/2016

Engaged in XP3 device development project.
“XP3” Audio Player
- Features:
 Audio file (MP3, WMA, Ogg Vorbis, AAC, FLAC, WAV PCM ) Play
 Stereo audio output to earphone and loud speaker
 2.4” TFT LCD
 10 keypads with backlight LEDs
 Low power consumption and high efficient battery management
- Tech specs:
 Microcontroller: VS1005G-F-Q
 Sensing movement using 3D accelerometer: MMA8653FCR1
 Interfaces: 2.4” TFT LCD, 10 keypads, 0.7W speaker, Earphone
 Storage: Micro SD card
 Programming and Debug: UART, USB
 Boot from Flash memory
 Power: DC5V, 3.7V Li-ion battery
 2-color status LED
 USB for programming and debug
- Main Skills:
 2-layer PCB design using Altium Designer
 3D Case design using Solidworks
 VS1005 firmware development
 Power saving operation for low power consumption

Single Port Dock for “XP3” Audio Player using Raspberry Pi Zero
- Features:
 Charging and Programming for “XP3” audio player
 Ethernet control for Raspberry Pi Zero
- Tech specs:
 Controller Board: Raspberry Pi Zero
 Ethernet controller: ENC28J60T-I/SS
 Interfaces: Ethernet
 Storage: Micro SD card
 Power: DC5V
 UART for programming and debug
- Main Skills:
 2-layer PCB design using Altium Designer

Embedded Entwicklung / hardwarenahe Entwicklung, C++, Qt (Software), Firmware, SolidWorks

12/2014 – 12/2015

“HeadNoise Fit” Smart Headband
- Features:
 Ears-Free audio: Bluetooth 4.0 Audio streaming from smart phone
 Stereo audio output to external speaker
 Real time biometric analysis: calorie loss, step count, heart rate
 Low power consumption
- Tech specs:
 BLE SoC: CSR8670C-IBBH-R
 Oximeter/HR sensor: MAX30102EFD+
 Sensing motion using 3D accelerometer: MMA8653FCR1
 1.4W audio power amplifier: MAX9719AETE+T
 2.4GHz PCB antenna
 Interfaces: 1W R/L external speaker, I2C, Thermistor
 Programming and Debug: JTAG
 Power: 5V from USB type C connector, 3.7V Li-ion battery
 3-color status LEDs
- Main Skills:
 4-layer compact PCB design using Altium Designer
 RF circuit design with 50ohm impedance matching
 BLE SoC firmware and App development
 Low power consumption design

Embedded Entwicklung / hardwarenahe Entwicklung, Altera (allg.), Quartus (Altera), FPGA, Embedded Systems, C++, Qt (Software), Firmware

7/2009 – 2/2016

- Hardware design
Altium Designer, Autodesk Eagle, KiCAD.
- Firmware programming.
Atmel Studio, Arduino, mPlab, Keil C
Keil MDK, IAR, mBed
- Matlab
-Qt
- Rasberry PI, Orange PI

- BLE/Bluetooth Developer.
nRF51822, nRF52832, DA14580, DA14680, CSR8670

Embedded Entwicklung / hardwarenahe Entwicklung, Altera (allg.), Quartus (Altera), FPGA, Embedded Linux, Embedded Systems, C++, Simulink, Qt (Software), Firmware, Altium Designer, SolidWorks