1. STM32F030R8T6 based 8 x ADC / 12 x DI input module with modbus RTU protocol.2. STM32G030C8T6 based 3 phase power controller with PID control software.3. STM32F030F4 based SCR fail detection module.4. PIC18F45K80 based, 8/12 window Annunciators, RS485 with Modbus RTU protocol.5. PIC18F26K22 based HMI with 20 x 4 LCD display, 4 x key, panel control software and dual RS485 output with Modbus protocol. 6. PIC18F45K80 micro based Digital controller with 8 Digital inputs, 6 Relay outputs, 3 DAC, 8 x 12 bit ADC inputs, RS485 interface with HMI and in built power supply. 7. PIC18F4550 microcontroller based Color Gyroscopic mixer for COROB.8. PIC16F886 microcontroller based Auto Float Boost controller with built in SMPS.9. PIC12F675 microcontroller based Under / Over voltage circuit with built in SMPS.10. PIC12F675 microcontroller based Timer with delay setting using DIP switch.11. PIC 16F886 microcontroller based Healthy Phase selection circuit.12. PIC18F45K80 based 8 channel 0-10V Analog input card with Modbus protocol.

• Coin operated pay phones and booth display.• RS232 to USB converter using FT232R.• GSM controlled systems using SIM 100 modules.• Petrol pump meter with Modbus communication protocol.• Transistor tester / V-I characteristics plotter with automatic NPN/PNP and polarity(C-B-E) detection, hfe/Beta measurement and RS232 serial output.• Four and half digit panel meters using ICL 7135 and RS232 output.• PIC12F675 microcontroller-based Power saver for refrigerator.• 89C52 uC based Ten channel Nurse / Watchman / Peon Calling system.• 89C52 uC based rolling floor number indicator for Lift.• 89C2051 uC based Temperature indicator using three wire sensor DS18S20.• MCIO card with 12-bit ADC, DAC, DI, DO and RS485 serial output.• Heater controller with AC phase angle control from 5 to 175 Deg.C.

• MCB status monitoring system, with 13 slaves serially interfaced with master.• Preset counters, Frequency meters, Amp hour meters and digital indicators with RS485 serial output and Modbus protocol.• 8052 microcontroller based Plating rectifier controller using digital potentiometer MCP42010.• Pulse to current converter.• Master / slave clock with Modbus protocol.• Thermister input temperature controller for refrigerator.• Digital clock for refrigerator.• Motorised control valve controller.• Digital locks with LCD display.

• Servo hydraulic material and shock absorber testing machine consisting of Load cell, LVDT and limit detector cards peak indicator using AD574 / AD1210 to hold peak value of input waveform.• Digital peak indicator using AD574 / AD1210 to hold peak value of input waveform.• Worked on Digital Tachometer using IC 7126.

Worked on production, testing and installation of Temperature control system, Pressure control system, Level control system, Flow control system, consisting of ADC, DAC, Digital input / output, Relay output cards and Level, pressure, flow and Temperature transmitters.