Grisha A. Profile | Freelancer

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$18 USD / hour

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praha,

$18 USD / hour

It's currently 10:14 AM here

Joined November 14, 2014

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Grisha A.

@Geryhold

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$18 USD / hour

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praha,

$18 USD / hour

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Embedded engineer STM32, PIC, OrCAD, PCB

Versatile R&D professional with 12 years experience in conceptualization and development of microprocessor-based products and solutions. Specialized skills in microcontroller STM32, PIC, dsPIC, Voltage Regulator, Nixie Clock and DDS. COMPUTER SKILLS Compilers / Editors IAR C compiler, MPLAB IDE/MPLABX IDE XC8, XC16, XC32 Programming Languages C & Assembly EDA packages Cadence Allegro OrCAD 16.6: Schematic Capture & PCB layout & Allegro PCB Designer. Emulators / Simulators IAR, MPLABX, Electronic workbench, Proteus, PSpice Microcontrollers ST: STM32F0xx, STM32L1xx, STM32F4xx Microchip: PIC10, PIC12, PIC16, PIC18, PIC24, PIC32 & dsPIC33

See all C Programmers in Czech Republic

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Portfolio

Hi-Fi Audio Amplifier
nom 2x200W - 0.001% THD
max 2x300W - 10% THD

Based on
- Amplifier IC LM3886T - 8pcs,
- Microcontroller PIC16F887A & MPLAB IDE Compiler Assembler,
- Display HD44780 4bit mode,
- Digital volume control IC PGA2311 Low THD - SPI Protocol,
- IR Remote Sony SIRC Protocol on reciver IC TSOP4840,
- Temperature measurement I2C 1-Wire Protocol IC DS19S20,
- Fan control using PWM Driver IC L292D,
- Switcher inputs on the relay to reduce THD,
- Soft start hardware, Stand-by and Mute mode

Hi-Fi Audio Amplifier 2x300W + IR Remote

RFID Control - CartReader Matrix 2 EH on microcontroller PIC18F4525 1024EEPROMcomunication PC on RS232

RFID Control - CartReader PIC18 RS232, 1-Wire, RS232

LCD monoсhrom 7'' Driver SED13135 320x240pix+ PIC18F4550 MPLAB IDE Compiler C

Main features
- Interface 8080 8bit
- Drawing points
- Drawing Line - Bresenham's line algorithm
- Drawing Circle - Bresenham's circle algorithm
- Drawing Ractangel
- Drawing Ractangel Filled
- Drawing Char and String
- Drawing on the points of the image memory

LCD monoсhrom 7'' Driver SED13135 320x240pix

Pressure meter for repair of diesel engines

Main features
- Measurement 1 - 1000bar (the display you see on Russian written [бар])
- Microcontroller PIC16F626A MPLAB IDE Compiler Assembler,
- measurement - 1 - 1000bar
- Display LCD HD44780 (KS0066U)

Pressure meter 1- 1000 bar for repair of diesel engines

Main features
- Reciver 144MHz on IC MC13135DW
- Synthesizer PLL LMX2311
- Display monochrome LCD RDX0048 128x64pix
- Interface USB
- Microcontroller PIC18F2550 MPLAB IDE Compiler C

Reciver 144MHz Synthesizer PLL+LCD RDX0048 128x64pix+PIC18F

Development Board and Schematic Door Unit for VideoPhone Commax
Main advantages:
- Сompatible VideoPhone Commax
- High quality sound
- High volume and high sensitivity microphone
- The absence of feedback, no excitation, no squeak
- Low cost parts
- IC Motorola MC34118 and MC34119

Development Board and Schem Door Unit for VideoPhone Commax

Development Board and Schematic Door Unit for VideoPhone Commax
Main advantages:
- Сompatible VideoPhone Commax
- High quality sound
- High volume and high sensitivity microphone
- The absence of feedback, no excitation, no squeak
- Low cost parts
- IC Motorola MC34118 and MC34119

Development Board and Schem Door Unit for VideoPhone Commax

Development Board and Schematic Door Unit for VideoPhone Commax
Main advantages:
- Сompatible VideoPhone Commax
- High quality sound
- High volume and high sensitivity microphone
- The absence of feedback, no excitation, no squeak
- Low cost parts
- IC Motorola MC34118 and MC34119

Development Board and Schem Door Unit for VideoPhone Commax

Development Board and Schematic Door Unit for VideoPhone Commax
Main advantages:
- Сompatible VideoPhone Commax
- High quality sound
- High volume and high sensitivity microphone
- The absence of feedback, no excitation, no squeak
- Low cost parts
- IC Motorola MC34118 and MC34119

Development Board and Schem Door Unit for VideoPhone Commax

Hi-Fi Audio Amplifier
nom 2x200W - 0.001% THD
max 2x300W - 10% THD

Based on
- Amplifier IC LM3886T - 8pcs,
- Microcontroller PIC16F887A & MPLAB IDE Compiler Assembler,
- Display HD44780 4bit mode,
- Digital volume control IC PGA2311 Low THD - SPI Protocol,
- IR Remote Sony SIRC Protocol on reciver IC TSOP4840,
- Temperature measurement I2C 1-Wire Protocol IC DS19S20,
- Fan control using PWM Driver IC L292D,
- Switcher inputs on the relay to reduce THD,
- Soft start hardware, Stand-by and Mute mode

Hi-Fi Audio Amplifier 2x300W + IR Remote

RFID Control - CartReader Matrix 2 EH on microcontroller PIC18F4525 1024EEPROMcomunication PC on RS232

RFID Control - CartReader PIC18 RS232, 1-Wire, RS232

LCD monoсhrom 7'' Driver SED13135 320x240pix+ PIC18F4550 MPLAB IDE Compiler C

Main features
- Interface 8080 8bit
- Drawing points
- Drawing Line - Bresenham's line algorithm
- Drawing Circle - Bresenham's circle algorithm
- Drawing Ractangel
- Drawing Ractangel Filled
- Drawing Char and String
- Drawing on the points of the image memory

LCD monoсhrom 7'' Driver SED13135 320x240pix

Pressure meter for repair of diesel engines

Main features
- Measurement 1 - 1000bar (the display you see on Russian written [бар])
- Microcontroller PIC16F626A MPLAB IDE Compiler Assembler,
- measurement - 1 - 1000bar
- Display LCD HD44780 (KS0066U)

Pressure meter 1- 1000 bar for repair of diesel engines

Main features
- Reciver 144MHz on IC MC13135DW
- Synthesizer PLL LMX2311
- Display monochrome LCD RDX0048 128x64pix
- Interface USB
- Microcontroller PIC18F2550 MPLAB IDE Compiler C

Reciver 144MHz Synthesizer PLL+LCD RDX0048 128x64pix+PIC18F

Development Board and Schematic Door Unit for VideoPhone Commax
Main advantages:
- Сompatible VideoPhone Commax
- High quality sound
- High volume and high sensitivity microphone
- The absence of feedback, no excitation, no squeak
- Low cost parts
- IC Motorola MC34118 and MC34119

Development Board and Schem Door Unit for VideoPhone Commax

Development Board and Schematic Door Unit for VideoPhone Commax
Main advantages:
- Сompatible VideoPhone Commax
- High quality sound
- High volume and high sensitivity microphone
- The absence of feedback, no excitation, no squeak
- Low cost parts
- IC Motorola MC34118 and MC34119

Development Board and Schem Door Unit for VideoPhone Commax

Development Board and Schematic Door Unit for VideoPhone Commax
Main advantages:
- Сompatible VideoPhone Commax
- High quality sound
- High volume and high sensitivity microphone
- The absence of feedback, no excitation, no squeak
- Low cost parts
- IC Motorola MC34118 and MC34119

Development Board and Schem Door Unit for VideoPhone Commax

Development Board and Schematic Door Unit for VideoPhone Commax
Main advantages:
- Сompatible VideoPhone Commax
- High quality sound
- High volume and high sensitivity microphone
- The absence of feedback, no excitation, no squeak
- Low cost parts
- IC Motorola MC34118 and MC34119

Development Board and Schem Door Unit for VideoPhone Commax

Reviews

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Experience

Kodis Ltd. UA

Jun 2013 - Oct 2014 (1 year, 4 months)

Voltage Regulator Thyristor (Triac)

Dnepropetrovsk Paper of Mill Ltd. Ukraine

Feb 2010 - May 2013 (3 years, 3 months)

DCTS Ltd.

Sep 2004 - Sep 2006 (2 years)

Education

Migistr

Dnipropetrovsk State Technical University of Railway Transport,

Ukraine

2004 - 2010

(6 years)

Qualifications

2008

Training 100% Kazarinov

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