I am a senior electrical engineer with 8 years of experience in PCB layout and firmware design for more than 50 products. I have been designing custom PCB layouts and firmware programming by myself as is required for customers and have achieved several market-ready products. My area is as followed:
- IoT solution
* Pool sensor IoT system with temperature, pH, oxygen level, and flow sensors
* Soil sensor IoT system for farm with temperature, pH, humidity sensors
* nRF52832(Bluetooth SoC) and magnetic field sensor based magician pen design(for magnetic sensor fusion, I used noise cancellation circuitry)
* nRF52832(Bluetooth Soc) + AFE4404(Blood Oxygen level sensor) + ADS8192(ECG sensor chip) based blood pressure monitoring wrist band design and ECG Patch design
* CC2640 + MPU9250(9 axis accelerometer + Gyroscope+ magnetic filed) sensor based exercise monitoring device for medical purpose
* STM32L + BG96(4G LTE IoT module) with AWS
* STM32F407 + DW1000(Decawave UWB module) for IPS(Indoor Positioning System)
* STM32+CC3200 based WiFi Doorbell design and implementation(firmware and hardware)
* STM32F105 based wearable oximeter+ blood pressure monitoring wristband(firmware and hardware all in Altium Designer)
* Fire alarm system based on BG96 NBIOT module with STM32
* SIM868 based GPS tracking device for child monitoring(wearable solution: BLE Nordic NRF52832 SoC)
- Biometrics devices and medical product design
* Fingerprint attendance device(Already market), AI combined face recognition device stm32F769I chip
* ECG based human identification system with DW1000(ADS8292 AFE and STM32F105)
* ECG + PPG based blood pressure monitoring module( for wearable smartwatch )
* fNIRS + EEG based brain mapping system