Projects

Projects and Designs that Kedareswar have worked on.

Although I've worked on Designing Hundreds of Boards and Debugging them, Here are some promisable major Industrial Projects that I've contributed.

Eruvaka Technolgies Pvt Ltd

pondmother

Description-
An Aquaculture project, which is primarily targeted to automate feeding at Shrimp Ponds by Scheduling and Auto modes to maintain the FCR at efficient level thereby reducing human errors and wastage.

Responsibilities -
Hardware design: Product specification, Schematic design | PCB layout (Altium), Hardware debugging, HW Validation
Embedded : Microcontroller test firmware (Keil).

Hardware Specification -

STM32 Microcontroller.
Full Graphical LCD Interface
UART,RS485,GPS,LORA,BLE 5.0.
Solar Charging and Battery Optimized hardware.
DFT optimized revisions.

No of Designers - 1 X Hardware , 2 X Embedded
No of Versions - X3

NAVIS

Description-
Novel Autonomous Vessel for Intelligent Shrimp feeding is a revolutionary Product in the world at range of Automatic feeders existing in market. It is an Autonomous rechargeable Electric Boat with feeder and will run entire pond in path according to User Input from Android App. It's most advantage is it's autonomous navigation and it's mobile capability to cover entire pond.

Mother Board Design

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium).

Hardware Specification -

SOM Module Hardware design.
High Power Motors control & PWM|PPM Regulation.
UART,GPS,WIFI.
Hardware Endurance for Inrush Currents, Voltage spikes, Filtering optimization dure to High power Inductive loads.
Solar Charging and Battery Optimized hardware.
High Speed Digital Design.

Eruvaka Technolgies Pvt Ltd

No of Designers - 2 X Hardware , 2 X Embedded
No of Versions - X1

Remote Controller Design

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium).

Hardware Specification -

RP2040 based Hardware design.
LORA based Connectivity.
AA Battery Charger and USB Charging support for Plug and Play.
Graphical OLED Display
Joystick based Design.

No of Designers - 1 X Hardware , 1 X Embedded
No of Versions - X1

Eruvaka Technolgies Pvt Ltd

pondguard

Description-
Real-time monitoring of Pond Dissolved Oxygen and Water Temperature with intelligent control of aerators and feeders, reduces Electrical wastage and increases yield and make it sustainable. Significantly reduces the risk for farmer and helps him to increase productivity.

Responsibilities -
Hardware design: Product specification, Hardware Roadmap, Schematic design | PCB layout (Altium), HW Validation, Documentation - Test Plans
Embedded : Microcontroller test firmware (Keil).

Hardware Specification -

STM32 Microcontroller.
Full Graphical LCD Interface
UART,RS485,GPS,LORA,BLE 5.0.
Onboard Solar Charging and Battery Optimized hardware.
Signal Processing Circuit to Read Oxygen Sensor values for Interfacing to ADC.

No of Designers - 1 X Hardware , 2 X Embedded
No of Versions - X1

SHRIMPTALK

Description-
Intelligent Underwater acoustics based Shrimp feeding system. Effective in feeding based on Shrimp appetite which effectively results in better FCR and faster growth. 24X7 Feeding system Reduces feed wastage and Improves Water quality.

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium), Test plan for Testing's and Documentation.

Hardware Specification -

SOM Module Hardware design.
Audio Codec Integration for Hydrophone.
Multi Power Rail X 5 levels on board.
On board Solar Charging and Battery Optimized hardware.
High Speed Digital Design - SDIO,USB .

Eruvaka Technolgies Pvt Ltd

No of Designers - 1 X Hardware , 2 X Embedded
No of Versions - X1

Eruvaka Technolgies Pvt Ltd

pondrunner

Description-
PondRunner is a Three Phase Motor controlling and Monitoring device which is actively used for Aerators control and Power consumption monitoring. It has both Schedule modes and Auto mode which works by the inputs from Dissolved Oxygen levels from other device.

MCU Board Design

Responsibilities -
Hardware design: Hardware Roadmap, Schematic design | PCB layout (Altium), HW Validation, Documentation - Test Plans
Embedded : Microcontroller test firmware (Keil).

Hardware Specification -

STM32 Microcontroller.
Full Graphical LCD Interface
UART,RS485,GPS,LORA,BLE 5.0.
Battery Backup with Auto cut off and Current limiting features.
8 Channel On board Relay with Isolated DC Power to control Three Phase Motors .

No of Designers - 1 X Hardware , 1 X Embedded
No of Versions - X4

Energy Meter Board Design

Responsibilities -
Hardware design: Complete Hardware build up from Testing and Validation of Three Phase Energy Systems, Electrical Control Panel Wiring Proto and Design for Three Phase Systems Integration with PCB's using MCB's& Contactors etc., Hardware Integration, Schematic design | PCB layout (Altium), HW Validation, Documentation - Test Plans
Embedded : Library Development for AFE Device on board and Test firmware.

Hardware Specification -

Analog Front End Device for Three Phase Monitoring using CT's .
On board 440V 3Ph AC to 12V DC Conversion.
Clearances for 440V and Isolations.
Electrical Controls - MCB, MPCB, Contactors via PCB
Isolated Multiplexed Communication with Host MCU.
Complete DC-DC Isolated upto 2KV Endurance .

No of Designers - 1 X Hardware , 1 X Embedded
No of Versions - X4

LTE GATEWAY

Description-
Gateway device which was designed to operate over LTE Network using SIM Card thereby creating a WIFI Access point for devices around specifically for Villages with less network strength.

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium), Antenna Analysis, Test plan for Testing's, Wire Harness Preparation and Documentation.

Eruvaka Technolgies Pvt Ltd

Hardware Specification -

SOM Module and Microprocessor based Hardware design.
Low Cost and High reliability standard.
Multi Power Rail X 3 levels on board.
USB- Ethernet converter onboard and 24V output for POE LAN.
On board Solar Charging and Battery Optimized hardware.
High Speed Digital Design - SDIO,USB .

No of Designers - 1 X Hardware , 2 X Embedded
No of Versions - X4

Eruvaka Technolgies Pvt Ltd

FEED BLOWER

Description-
FeedBlower is a Three Phase Motor controlling device which is used to control a Three Phase Blower which transfers the feed from Shore to Feeder in Pond.

Hardware Specification -

STM32 Microcontroller.
Full Graphical LCD Interface
UART,RS485,GPS,LORA,BLE 5.0, Clearances for 440V and Isolations.
Electrical Controls - MCB, MPCB, Contactors via PCB
Isolated Communication with Host MCU from Hot side
8 Channel On board Relay with Isolated DC Power to control Three Phase Motors .

No of Designers - 1 X Hardware , 1 X Embedded
No of Versions - X4

OPTICAL DO SENSOR

Description-
Sensor used to measure the Dissolved Oxygen in water / chemicals by Optical method. Used to monitor the DO Level and sends the data over RS485 Communication externally.

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium), Mixed Signal Design, Test plan for Testing's, Complex Structure and Documentation.

Hardware Specification -

Complete Opamp's based Analog Hardware design.
Trans Impedance Amplifier design.
Multiple Signal generators and Comparators on board.
Noise endurance design for better TIA and Signal amplification circuits.
Phase detection using XOR gate design.

Eruvaka Technolgies Pvt Ltd

No of Designers - 1 X Hardware , 2 X Embedded
No of Versions - X2

Eruvaka Technolgies Pvt Ltd

SOLAR CHARGE CONTROLLER

Description-
A charge controller regulates and limits the rate at which power/current is added to or drawn from battery to protect against overload, overcharging, and may protect against overvoltage. It may also prevent completely draining ("deep discharging") a battery, or perform controlled discharges.

Responsibilities -
Hardware design: Complete Hardware build up from Testing and Validation of Power charging and discharging of lead acid battery systems, Hardware Integration, Schematic design | PCB layout (Altium), HW Validation, Documentation - Test Plans
Embedded :Complete charge algorithm- PWM and firmware development on STM8 based Microcontroller.

Hardware Specification -

STM8 Microcontroller.
LED Indication user Interface
High Power MOSFEFT's and ensuring even Thermal conductivity.
Hardware protections included like Reverse Voltage, Over voltage, Over current, Under voltage, Short circuit detection and others.

No of Designers - 1 X Hardware , Embedded
No of Versions - X3

Lte based DIGITAL VOICE assistant

Description-
Similar to pre existent digital assistants like Alexa, Google , This device is a gateway cum digital assistant which is mainly focused over Home automation systems.

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium), Documentation for DFM | DFT.

Hardware Specification -

Raspberry PI CM4 Based Hardware Design .
Low Power Hardware and Battery charging via USB.
Digital MEMS Microphone onboard.
EC20 SOM for LTE Network.

VINX Innovative Tech Solutions PVT LTD

No of Designers - 1 X Hardware
No of Versions - X1

VINX Innovative Tech Solutions PVT LTD

Attendance system using uhf reader

Description-
While the system is installed at Entrance, it detects the RF ID Cards with it's UHF Readers and sends the data to Receiver via LORA which has GUI running to visualize the real-time attendance info.

UHF Transmitter

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium), Documentation for DFM | DFT.
Embedded: STM32 Firmware on Weigand Protocol on transmitter side.

Hardware Specification -

STM32 Microcontroller.
Dual Buzzer and UHF Reader Interface
LORA based Long Range transmission.

No of Designers - 1 X Hardware , Embedded
No of Versions - X1

UHF Receiver

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium), Documentation for DFM | DFT.
Embedded: Python Code to read the value from LORA and send to GUI in packet format.

Hardware Specification -

Raspberry PI Zero based Hardware design.
LORA based communication to receive the data.

No of Designers - 1 X Hardware , Embedded
No of Versions - X1

SMART SANITIZER DISPENSER

Description-
Due to prevailing Covid times, this device detects the hand placement and will automatically dispenses the predefined Sanitizer amount thereby reducing the contact with Social distancing also it wishes the user along with some pleasant music.

Responsibilities -
Hardware design: Hardware Block design, Schematic design | PCB layout (Altium), Documentation for Assembly.
Embedded : Programming Sanitizer dispenser as per user manual provided by firmware development in STM32.

VINX Innovative Tech Solutions PVT LTD

Hardware Specification -

STM32 Based Hardware Design .
Several Sensors connectivity.
Full Graphical LCD Interface.
Single 220V Input for flexibility.

No of Designers - 1 X Hardware | Embedded
No of Versions - X1