Remote Embedded Firmware Developer, PCB Designer & IoT Expert
Remote embedded firmware development for IoT & wireless products, including BLE/WiFi/GSM/GPS solutions, and production-ready PCB design (schematic, layout, Gerber, and DFM/DFT).
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11 Years
14+ Years
14+ Years
14+ Years
9+ Years
14+ Years
Embedded firmware and IoT engineering for real products, including RTOS/BSP development, wireless stacks (BLE/WiFi/GSM), sensors & peripheral interfacing, and PCB design from schematic to fabrication files.
● The product is to track pets using Ble v5.0. The pet has
a battery operated device on a neck belt.
● This device is a ble 5.0 based transceiver which
responds to Bluetooth messages.
● There is one master device which keeps tracking of all
the tags and generate status and alerts according to it.
● User can configure alerts, define range and register
tags from master device using mobile application.
● This modem is a Fixed Cellular Terminal (FCT) for data applications.
It is a compact and portable unit that can satisfy various data
communication needs over GSM. It can be connected to a computer
with the help of a USB(virtual com port)
● The GSM Modem offers features like Short Message Services (SMS),
Data Services (sending and receiving data files, Remote login and
data file transfer are also supported.
● It is the perfect equipment for factory plants, resorts, dams and
construction sites where wired connectivity is not available or not
practical.
● The ready-to-use GSM Modem can be setup with minimal efforts. It
finds its applications in IT companies, Banks and Financial
Institutions, Logistic Companies, Service Providers, Remote Project
Sites, Professionals, and such other business establishments.
● The product is to track pets using Ble v5.0. The pet has
a battery operated device on a neck belt.
● This device is a ble 5.0 based transceiver which
responds to Bluetooth messages.
● There is one master device which keeps tracking of all
the tags and generate status and alerts according to it.
● User can configure alerts, define range and register
tags from master device using mobile application.
● Main goal behind this product is to use Bluetooth
Low Energy Soc with different sensors
integration.
● It has CC2541 soc(BLE), TPS62730 voltage
regulator, TMP102 temperature sensor,
KXTJ2-1009 accelerometer sensor.
● PCB size is 27mmx30mm.
● This product has been designed for to take
advantage of BLE in tracking devices.
● This module includes CC2541 BLE soc and some
miscellaneous. It has on PCB planar antenna with
proper impedance matching.
● This device has pinouts which can be used in future
for sensor integration or as UART or as GPIOs.
● This module can be used as peripheral, central,
observer and broadcaster.
● This device can be operated with 3V Coin cell
(CR2032) or 3V3 DC external supply. We tested its
range approx. 100m for outdoor as peripheral
application.
● This PCB has been designed to control compressor
automatically.
● It has capability to get outer temperature data in form
of ADC , and operate(turn ON/OFF) compressor based
on temperature readings.
● There are LED indication for compressor running status
with inputs.
● This device is designed to display floor number and
arrow sign on dot matrix display.
● It is designed with two 8x8 dot matrix modules and
STM32 series MCU.
● The main function of this project was to control
appliances using capacitive touch buttons and send
status to server using MQTT over WiFi(ESP32).
● There are three different PCBs stacked to reduce form
factor of device.
● Dimension of device is 40mm x 40mm.
● The main objective of this product was to build smart OBD
(On-Board Diagnostic) device which can be used in automobile
industry.
● This is a step for automobile industry towards IoT.
This device comprises of:
○ A MCU (microcontroller unit) which communicates with car
on CAN (controller area network) Bus and gathers car's
health data i.e. engine temperature, speed, torque, oxygen
sensor data, fuel data, pressure data and many more.
○ A Bluetooth which communicates with mobile app to send
car's data
○ A GSM - to send data to servers using http
○ GPS - to get car's real-time location
○ SD card - to store data offline in .csv
● This project was basically a typical iBeacon based on
nRF52840 module which operates on CR2477 Lithium
coin cell.
● It has battery retainer to hold coin cell.
● This breakout board was designed as an add-on for a
product.
● This breakout board contains SIM808 with GSM Antenna
and GPS antenna.
● We have also added buck boost converter for peak
current.
● We have used active antenna for GPS with SMA
connector.
● PCB was designed with proper 50 ohm impedance
matching.
● This breakout board was designed as an add-on
for a product.
● This breakout board contains SIM5320 with GSM
Antenna and GPS antenna.
● We have also added buck boost converter for
peak current.
● We have used active antenna for GPS with SMA
connector.
● PCB was designed with proper 50 ohm
impedance matching.
● This product has been designed for specifically
temperature measurements and logging on server.
● Device has ESP12F module and TMP102 sensor for
temperature.
● This device can be operated by 3.7V LiPo battery.
Board has also a battery charging mechanism.
● The main goal of this project is to send temperature
data to server through http rest APIs.
● Device can be configured through in built web server
GUI and Android app.
● Device can be programmed through Micro USB.
Freelance and remote projects are welcome. Share your requirements for embedded firmware, IoT development, and PCB design - I'll respond with a clear plan and timeline.
