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@jjhw1987
Flag of China Tieling City, China
Member since June 7, 2019
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jjhw1987

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Embedded Engineer/Nordic firmware programmer since 2005. ⭐⭐⭐⭐⭐ NRF52 firmware programmer ( NRF52840/ NRF52811/ NRF 52832/ NRF52810) NRF52 BLE5.0/BLE5.1 device PCB designer ,manufacturer and firmware programmer Fast SMT / PCB / PCBA manufactuer with low cost and small quantity IoT home sensor/ BLE mesh / IoT gateway (WiFi/ETH/4G) ESP32 / Arduino / STM32 firmware programmer Bluetooth/wifi/z-wave/RFID/GPS antenna Raspberry pi/ Orange Pi/ Banana pi/ Beagle bone Android TUYA SDK/KNX SDK/Nordic SDK/CSR SDK My top skill is here : PCB design Manufacturing Firmware programming Mobile App development My experienced field: IoT(Bluetooth Low Engergy (BLE), LTE 4G, Smart BMS, WiFi, LoRa, RFID, Wireless, GSM, GPS, ... ... ) Altium Designer, Cadsoft Eagle, Arduino, Keil , IAR, Eclipse, MATLAB, Quartus II, Xilinx ISE/Vivado, CCS Texas Instrument DSP (tms320c2000, c5000, c6000, msp430, cc1310, etc)
$35 USD/hr
2 reviews
5.4
  • 100%Jobs Completed
  • 100%On Budget
  • 100%On Time
  • 50%Repeat Hire Rate

Portfolio

Recent Reviews

  • image of Criss C. smart home sensor and tuya mobile app $500.00 USD

    “Thanks for your consulting, You are professional in our work and will hire again. Thank you so much”

  • image of Shlomo R. Arduino code $20.00 USD

    “the project was in very short time very reliable person ! Very fast ! Very understandable Excellent to work with! i recommend to take him, to do your project Thank you”

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