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Denis A.

@dennuar

4.7
45

6.9

6.9

96%

Embeded Software/ Electronics developer

$20 USD / Hour

・

Flag of

Ukraine (11:57 AM)

・

Joined on July 21, 2015

・

5 Recommendations

$20 USD / Hour

・

Engineer with experience in develop analog and digital devices over 15 years. I have worked with different topologies for DC-DC, AC-DC, DC-AC converters; completed a lot of projects based on FPGA and MCU - ARM - STM32, NRF51/52, AVR, ESP8266, PIC, Arduino, NXP. I have knowledge and working experience with interfaces - RS-485/232/422, WiFi, Bluetooth LE and Bluetooth 5.0 LE, SPI, I2C etc; a lot of sensors, peripheral ICs. Also in the last time I'm coding with many RTOS (FreeRTOS, Micrium and others.) I have great experience with Low Power Lora EndNodes and Gateways development (433MHz/868MHz/2.4GHz). Expirience with Linux mini PC: Rpi, Opi and etc Offer help with: - Scheme develop - PCB design - Altium Designer, OrCAD, Eagle CAD, KiCAD, Proteus, Multisim and etc. - C/C++ coding for many microcontrollers, also for linux - Simulation in Spice simulators LTSpice, Proteus and etc - Prototype in electronic lab - 3D CADs design: SolidWorks, Kompas 3D and etc. For contact: Skype: artjden

Verifications

On time

100%

On budget

100%

Accept rate

71%

Repeat hire rate

31%

Freelancer Electronics Engineers Ukraine
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Portfolio

Portfolio

3293306
IoT Dimmer Smarphone or via Internet control. Prototype. Home made PCB. Android control support.

WiFi IoT Lamp Dimmer (ESP8266)

IoT Dimmer Smarphone or via Internet control. Prototype. Home made PCB. Android control support.

WiFi IoT Lamp Dimmer (ESP8266)

IoT Dimmer Smarphone or via Internet control. Prototype. Home made PCB. Android control support.

WiFi IoT Lamp Dimmer (ESP8266)

IoT Dimmer Smarphone or via Internet control. Prototype. Home made PCB. Android control support.

WiFi IoT Lamp Dimmer (ESP8266)

2215361
Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

3176098
Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

2981793
Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

2632280
Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

2632321
Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

3293306
IoT Dimmer Smarphone or via Internet control. Prototype. Home made PCB. Android control support.

WiFi IoT Lamp Dimmer (ESP8266)

IoT Dimmer Smarphone or via Internet control. Prototype. Home made PCB. Android control support.

WiFi IoT Lamp Dimmer (ESP8266)

IoT Dimmer Smarphone or via Internet control. Prototype. Home made PCB. Android control support.

WiFi IoT Lamp Dimmer (ESP8266)

IoT Dimmer Smarphone or via Internet control. Prototype. Home made PCB. Android control support.

WiFi IoT Lamp Dimmer (ESP8266)

2215361
Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

Arduino Projects prototyping I2C temperature 14bit sensor PCB Layout prototype

Arduino Projects Prototyping.

3176098
Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector, Bluetooth interface for settings and updating firmware without wires. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller PCB v2 base on STM32F405 + Bluetooth

2981793
Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

Wheelchair controller for wheelchair with STM32F405 Cortex-M4, CAN interface, IMU(MPU-9250), LEDs, buttons, JTAG, Joystick connector. https://www.youtube.com/watch?v=cugZ1KpN20k

Wheelchair controller pcb base on STM32F405

2632280
Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

Master read infromation from internet via WiFi, then send this data via RF protocol to long distance to slaves and master receive information from slaves. After master send information back to web server. Slaves work from clock battery very long time( > 4weeks). In sleep mode very low power consuption (

WiFi + RF system (Master + 4 Slaves)

2632321
Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

Quadrocopter fly system(with RF control).

4.7 · 45 Reviews
45 Reviews
User Avatar
Flag of

Sascha O.

4.8

$1,400 USD

8 years ago

Project Design & Coding for KLS

Solve Problems by his own.

C Programming

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L

Former Client (inactive)

5.0

$815 USD

9 years ago

Project for dennuar -- 7

Denis is excellent to work with and delivers excellent work. I always use Denis for my PCB layout work.

Electronics
Microcontroller
Electrical Engineering
PCB Layout

+1 more

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J
Flag of

Jack N.

5.0

$40 USD

9 years ago

Circuit board

Great Freelancer

Electronics
PCB Layout

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Flag of

Matthew E.

5.0

$35 USD

9 years ago

Project for dennuar -- 2 (archived)

wonderful working with you again, excellent job, thanks so much!

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Flag of

Matthew E.

5.0

$50 USD

9 years ago

Project for dennuar (archived)

very easy to work with, will use again

Share

Education

Odes'kij Nacional'nij Mors'kij Universitet

1995 - 2002

•

7 years

Master

Flag of

Ukraine

1995 - 2002

•

7 years

Freelancer logo US (International) / English
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