1. SDWAN-Software defined WAN.2. Openwrt development.3. SW tools with git & SVN. 4. Familiar with Ethernet,TCP/IP and WiFi protocol, include http, TR69, SSL,ICMP,NBNS, STP,BSD,iptables,Qos,Openvpn,MPLS,IPSEC,IPSET,OSPF,BGP,GRE,RIP,,,5. Familiar with Web GUI, such as html, JSON, JS lib – Jquery, Vue, ASP,python.6. Linux kernel cutting and Application configuration.

1. WiFi router design/development based on OpenWrt –a Linux distribution for embedded devices.2. LTE router design/development based on Linux.3. Some misc jobs, such as MCU (stm8s) SW/HW design, also some java web working -HTML,JS,JSP,sevlet,Java involved. 4. Use BC95 to develop NB-IoT smart lock. Include NB-IoT protocols of UDP, CoAP, OneNet.5. Use NXP QN9201 to develop BLE smart lock.6. Use STM8S003,STM8L051,STM32L011 to develop NB-IoT devices, such as… Show more 1. WiFi router design/development based on OpenWrt –a Linux distribution for embedded devices.2. LTE router design/development based on Linux.3. Some misc jobs, such as MCU (stm8s) SW/HW design, also some java web working -HTML,JS,JSP,sevlet,Java involved. 4. Use BC95 to develop NB-IoT smart lock. Include NB-IoT protocols of UDP, CoAP, OneNet.5. Use NXP QN9201 to develop BLE smart lock.6. Use STM8S003,STM8L051,STM32L011 to develop NB-IoT devices, such as remote fire alarms, smart Key…7. RTOS based SW system development on CC2640R2F.8. Cable_lock with BLE, GPS, NB-IoT design. Users can check the remote cable_locks on mobile phone APP to get their traveling maps and unauthorized_unlocking alarms.9. Use VS2013 VC++ to develop Windows applications. Show less

1. Thermostat system design on both hardware and software. 2. Power part design, including X2 Cap, transformer, SMPS (switching mode power supply). 3. Circuit design on MCU and LCD. 4. Communication design on WiFi, Bluetooth, KNX.5. I/O design on Cap touch and rotary.6. DFMEA - Design Failure Mode and Effects Analysis.7. Compliance - CE LVD/EMC/R&TT/Rohs2.0/ErP's improvement and certification.8. Coordinator on technical issues between… Show more 1. Thermostat system design on both hardware and software. 2. Power part design, including X2 Cap, transformer, SMPS (switching mode power supply). 3. Circuit design on MCU and LCD. 4. Communication design on WiFi, Bluetooth, KNX.5. I/O design on Cap touch and rotary.6. DFMEA - Design Failure Mode and Effects Analysis.7. Compliance - CE LVD/EMC/R&TT/Rohs2.0/ErP's improvement and certification.8. Coordinator on technical issues between Siemens and EMS (external manufacture system, i.e. OEM/ODM). 9. Monitor and instruct EMS' technical work and report to Siemens' management. Show less

1. Remote Control System of Road LED, including 3 parts: Unit, Hub, Center Console. The entire HW and SW work is under my duty, no other personnel participated, no any outsource. 2. Unit Controller design: STC MCU, PLC chip, AC/DC converter.3. Hub design: Cortex-M3, PLC chip, AC/DC converter, GPRS Module.4. Center Console design: LDO, RS232, GPRS Module.5. Unit, Hub, Center PCB layout.6. Unit software design, with Keil C51.7. Hub software design… Show more 1. Remote Control System of Road LED, including 3 parts: Unit, Hub, Center Console. The entire HW and SW work is under my duty, no other personnel participated, no any outsource. 2. Unit Controller design: STC MCU, PLC chip, AC/DC converter.3. Hub design: Cortex-M3, PLC chip, AC/DC converter, GPRS Module.4. Center Console design: LDO, RS232, GPRS Module.5. Unit, Hub, Center PCB layout.6. Unit software design, with Keil C51.7. Hub software design, with Keil MDK.8. Windows program, with Microsoft MFC. Including 3 parts: Unit operation interface, Hub operation interface, Center remote control system of Road LED. UI, HW Driver, Data among it. UI friendly, and very efficient with Windows Run-Time resource.9. Using RS485/DMX512 instead of PLC, redo all work above.10. Using Android instead of Center hardware and Windows. redo the work of item 7,8 above. Show less

1. With AVR Mega64, develop calling machines for Japan (including SW&HW), and the matched Windows XP software 2. With ARM7, develop 56mm and 80mm micro thermal printers (including SW&HW), andthe host software of WINCE3. With Cortex-m3, develop Client Manager Pagers (including SW&HW) 4. With RF905 and STC chips, develop wireless LED screens (including SW&HW) 5. With AVR Mega88, develop Wireless Voices(including SW&HW)6. Develop PCB antennas for 2G RF… Show more 1. With AVR Mega64, develop calling machines for Japan (including SW&HW), and the matched Windows XP software 2. With ARM7, develop 56mm and 80mm micro thermal printers (including SW&HW), andthe host software of WINCE3. With Cortex-m3, develop Client Manager Pagers (including SW&HW) 4. With RF905 and STC chips, develop wireless LED screens (including SW&HW) 5. With AVR Mega88, develop Wireless Voices(including SW&HW)6. Develop PCB antennas for 2G RF ID cards 7. Solve some problems in production and after sales, such as EMI, ESD, product instability… Show less

1. Design DVB-S (digital video broadcast) receiver card 2. Design STB (set to box) 3. CPU hardware circuit design 4. Video and Audio hardware circuit design 5. Schematic circuit layout 6. PCB layout 7. System test

1. System design for Router 2. System design for IP Switcher 3. Initiate new marketable products, pre-research them 4. Overall design, including software, hardware and structure 5. Day-to-day management of R&D department 6. Mastermind a new Ethernet Switcher, Gbit ports, 32bit MCU, multilayer IP stackprotocols, and embedded RTOS

1. On TI 8bit MCU, develop toys with voice and LED 2. On Motorola 8bit MCU, develop toys with voice and LCD 3. On Sonix 4bit MCU, develop toys with voice, LCD and LED

1. 150MHz RF station for railway communication 2. 150MHz RF mobile for railway communication 3. 150MHz system control center for railway communication 4. 450MHz RF station for railway communication 5. 450MHz RF mobile for railway communication 6. 450MHz system control center for railway communication