About me:
Hello dear recruiter, I hope you are doing well. This is Chetan Tiwari from India. I have been working in IoT and embedded system development for more than ten years. I have developed numerous hardware devices and worked on BLE, wifi, RF, NFC, RFID, Lora, Lorawan, GSM, GPRS, LTE-M, NB-IoT technologies. I have implemented embedded communication like i2c, spi, rs232, rs485, Modbus RTU, a custom communication protocol for wireless devices. I have good knowledge of IoT communication like HTTP, HTTPS APIs, rest APIs, MQTT. I have worked on different IoT platforms. Your job matches my working experience.
Technologies worked on:
AVR microcontrollers
PIC microcontrollers
Raspberry Pi
Arduino
Esp8266
Esp32
Stm32
Nfc and rfid
Zigbee, Bluetooth, WiFi and Lora modules.
PCB Design: I can design 2 to 4 layer PCB.
IoT Platforms worked with
Ubidot
Thingsboard
Azure iot central and hub
Google iot core
The things network
Chirpstack etwork server and application server.
Project developed:
Home and office Security system with access control ( WiFi, RFID, NFC,GSM)
home automation. (Wifi, Zigbee, Bluetooth).
Centralise cooling cooling control (WiFi, Rf, lora).
Android based thermostat for cooling and heating
Energy management system ( Lorawan )
Lorawan based water metering solution
Street light control ( Lorawan, Zigbee).
Self checkout system for clothing showroom (nfc, WiFi).