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Artem

Let us make better hardware and software!

Username: k03ak

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Location: Kyiv, Ukraine

Member since: March 2006

Reputation:

4.9/5

(15 reviews)

5.4
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My projects:

  • $2875.00 USD
    5.0
    Profile image for Seller flyingace0072001

    flyingace0072001

    May 27, 2014

    Fantastic job, will use again!

    Project Description:I need a small board designed to assist with a current product. I have a product that requires 24VAC to operate, but due to line voltage variations and some internal circuit oscillations, the output high voltage varies widely...
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  • $180.00 USD
    5.0
    Profile image for Seller FIXLLC

    FIXLLC

    Apr 24, 2014

    Good work! Thank you.

    Project Description:Hello, I'm need design electric circuit (scheme) of two power supply: 1) 220VAC 50Hz to isolated 200VDC (10A). 2) 220VAC 50Hz to isolated 24VDC (5A).
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  • $250.00 USD
    5.0
    Profile image for Seller Stmpaji

    Stmpaji

    Apr 19, 2014

    He is a nice and professional engineer, will work with him again and again..

    Project Description:Hi, I have an AVR-GSM development board from www.olimex.com, am in a need of firmware written in C using AVR STUDIO to interface a keypad and LCD to this board and also to be able to send values entered using a keypad to a remote computer using a GSM modem over a GPRS network...
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  • $500.00 USD
    5.0
    Profile image for Seller Mastarezma

    Mastarezma

    Apr 1, 2014

    Hi is Awesome ! you can trust this guy , even after i paid him , when i found a problem he was there to help and keep his side of the deal , a true professional it was a pleasure working with him .

    Project Description:Hi Guys , I got an IP camera that have an C++ windows application (DLL's ) i want to convert the DLL to C# so i can control the PTZ using C# .net from the web , (up,down ,left,right, zoom in/out)...
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  • $166.00 USD
    5.0
    Profile image for Seller nextairj23

    nextairj23

    Mar 31, 2014

    Very high quality. Professional. Received project with time to spare! Highly recommend! great guy!

    Project Description:I am working on driving a 3 phase, 24V, 20A in wheel hub motor with the TI drv 8301 69M kit using a foot throttle. I've desoldered the potentiometer(an ADC port) and solder the foot throttle's signal wire in it's place...
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  • $871.67 USD
    4.6
    Profile image for Seller woodoodm

    woodoodm

    Sep 13, 2013

    Thank you for perfect work!

    Project Description:Development of Impulse Power Supply with parameters: Input voltage 100 - 240 V The output voltage of 19 volts The output nominal power of 120 watts Efficiency 90% As a basis you can take any power supply from the laptop with the appropriate parameters...
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  • $38.76 USD
    5.0
    Profile image for Seller quantumrider

    quantumrider

    Nov 18, 2006

    Rating: 5.0/5.0

    Project Description:[Project Description hidden]
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  • $90.00 USD
    5.0
    Profile image for Seller quantumrider

    quantumrider

    Oct 5, 2006

    Rating: 5.0/5.0

    Project Description:[Project Description hidden]
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  • $17.00 USD
    5.0
    Profile image for Seller quantumrider

    quantumrider

    Sep 21, 2006

    Rating: 5.0/5.0

    Project Description:[Project Description hidden]
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  • $17.00 USD
    5.0
    Profile image for Seller iFoerster

    iFoerster

    Aug 28, 2006

    K03ak delivers high quality code. Deliverytime and communication were perfect. Many thanks to K03ak.

    Project Description:[Project Description hidden]
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    Artem has not completed any projects.
  • [Sealed] In Progress

    Background InformationPreviously we had another person building these portable incubators for us that was a retired electrical engineer. He suddenly passed away and we have been unable to get any of the intellectual property concerning the incubators from the estate While we still have many working units that are still operational we do know in the future that we will eventually need more units therefore we are embarking on this project to design our own incubator with help from some talented individual or team from Freelancer. Initial Requirements for Version 3Here is what we are trying to achieve:PCB should not be bulky or interfere with portability of the unitPower Source: (2) 9 volt alkaline batteriesSome kind of on/off switchVolume of Water to be Heated: 100 mlWater Temperature Starting Point: 80 °FOptimal Temperature Point: 98.6 °FOptimal Temperature Range 95 to 99 °FTime at Optimal Temp: 3.33 Hours Other Notes: Liquid should never go over 100 °F and once it reaches 95 °F it should not deviate below that temperature.The basic parts consist of the following: 1 PVC bag1 metal sensor probe that is inserted in the bag.1 sensor that is inserted in the probe and connected to a controller board.1 flexible heater that fits under the bag and is connected to the controller board2 9 volt battery leads that is connected to the controller board.Software should be written to keep the temperature at the desired range.**** IMPORTANT***Please read the PDF file for more complete information.

    [more]
  • $800 USD In Progress

    everything in this link https://docs.google.com/document/d/1ZExNN3dZ0Hv7VzkuZ6gvKzk-IZMx2AkK6za_wkSGuBk/edit?pli=1start here video player*if the first stream is not playing, try to play the next stream.* check if can play dash .if can play, and the users checks “auto” on the channels screen, the video play plays the dash format.if not , play regular rtsp stream.* option to play static ads(pictures), and video ads over the maun video(overlay)* option to play playlist of preroll ,following by the movie and the postroll.disable scrubbing when playing preroll and postroll.*option to control the buffer size of the steam (how fast the movie should start playing up to 3 seconds) *icon to indicate a problem in the internet connection*the ability to display video and content like a banner , in the same screen while changing video size *if connection speed is too low switch to a slower stream (Dash like system

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  • $1000 USD In Progress

    As we discussed in Pm for desktop version of software. As we discussed in Pm for desktop version of software. As we discussed in Pm for desktop version of software. As we discussed in Pm for desktop version of software. As we discussed in Pm for desktop version of software.

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  • $1600 USD In Progress

    Abstract:Seeking person with some hardware, firmware skills. Goal is a small, battery powered driver circuit capable of receiving an infrared signal and generating the desired output. Total reward is $2500.This project will be divided into 3 phases. 1: development and delivery of a functioning breadboard circuit powered by external power supply. Use of a development board, Arduino, etc. is acceptable.2: Review of prototype. Then development and delivery of a functioning PCBA including rechargeable battery and power management circuit3: Review of prototype. Then development and delivery of final design including A: Circuit diagramB: Gerber filesC: Firmware code, programming C is preferredD: Compiled code, such as hex filesE: Bill of materials. BOM must include price and supplier for all non generic parts such as ICs, switches, potentiometers, power management circuits, voltage regulators, etc.Client will be responsible for all prototyping costs. A prototype budget will be provided. Service provider will be responsible for supplying their own tools, development software, and hardware such as IC programmer. Client will provide some similar circuits for reference. Service provider will be required to sign an NDA and sign over intellectual property rights of the resulting design.Specific requirements:1: Target size for finished PCBA, including battery is 75mm x 75mm x 6mm. Thinner is better.2: Target cost, including battery, for 50 units is $16 each3: Circuit must receive 10 different commands via a common IR standard that can be broadcast by a universal remote, i.e. RC-5, RC-6, NECIdeally button 1 on a remote would correspond with command #1, etc.4: Circuit must output 8 channels of 100V AC +/- 20% at 2500 Hz, +/- 30%. 1 W total output5: Outputs 0-7 correlate to IR commands 0-76: IR command 8 places circuit into a sound reactive mode where:6A: Circuit receives input from microphone6B: Circuit outputs channels 0-7 as a continuous gradient relative to the volume of sound received from microphone6C: Softest sound translates to channel 0 and loudest sound translates to all channels 0 through 7 6D: User controls volume sensitivity with a linear potentiometer7: IR command 9 silences sound reactive mode and stops all outputs8: Tactile switch or button toggles between on, sound reactive mode, and off9: Slider switch powers off circuit entirely10: Power is supplied by a small Polymer Li-ion cell, such as #6051 or #6020 at batteryspace.com11: Circuit charges battery via micro USB port12: Target battery life is 100 minutes of active use13: Use of a common IC, such as a PIC, ATiny, or ATmega, is preferred.14: Final component placement on PCBA is at client"s discretion, such as microphone, potentiometer, buttons, switches, and battery locations.15: Client to specify connector for 8 output channels16: Service provider to specify a universal remote for use in this projectPayments: Upon receipt of prototype and deliverables for each phase, service provider will be paid within 15 days.Phase 1: $1000Phase 2: $750Phase 3: $750Service provider may either submit prototype expenses for reimbursement or provide client with a shopping list and client will purchase.Timeline: Timeline is flexible. Target is 10 weeks:Phase 1: 2 weeksPhase 2 development: 2 weeksPhase 2 prototype: 4 weeksPhase 3: 2 weeks

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  • $1000 USD In Progress

    We need a fast parallel port driver, we can user under 64bit. It should be a replacement of our current 32bit driver. The driver should be used as a DLL to read and write to the parallel port with interrupting. The driver has to run under normal conditions for Windows 7 64bit OS in an industrial environment. It has to run 24 hours, 7 days and at least 1 month without reboot, crashes or memory leaks.The driver has to support both onboard parallel ports and certain PCI/PCI-e based I/O cards that provide the ACK interrupt (above or below interrupt 15) and I/O port mappingThe driver has to support a callback function, when the ACK interrupt was called.The driver has to provide a list of available LPT ports and to select one port for the connection.The driver should support bidirectional communication (if available for the port). We need to read and write the data port. Read and write the control port. Read the status port.All parts should be usable for commercial purpose. (So check the license of the OS, tools and libs you are using)TestYou should provide a test program which returns the input to the output of the LPT port for a performance test.You should provide results of an performance test with ~2,000,000 triggers at a trigger rate of ~10ms. (~5h test)99,9% of responses have to be in less than 1ms. 99,999% have to be in less than 5ms. 100% of the responses have to be quicker than 25ms.You have to test for memory leaks.We will do a final test on our i7 with some programs in the background. (System load 20..80%)DeliveryYou have to deliver the following:- Diver for Windows 7, 64 bit.- Test driver / Test mode- Test Protocol- Your source code

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  • $526 USD 17 days ago

    hello there i need a person who can finish my PCB schematics add more and put them into a right order.

  • $5263 USD 26 days ago

    We have to projects for which we need electrical engineering.

  • $20 USD/hr 27 days ago

    To Whom It May Concern:I am searching for someone that can help me design a specialize circuit board for a test rig. With help from the micro-chip designer, I have part of the primary function, which is to increase the 24Vdc input to 90Vdc output, of the circuit board designed. However, the design still requires adaptation to inputs from the test rig thereby providing the 90Vdc to activate a solenoid at the proper timing. The electronics specialist will have to (1) understand basic mechanical design (test rig), (2) select the best external electrical units to support the circuit board and (3) complete the current circuit design with a component list. The final design should be detailed such that it can be built by a pcb company. If you have experience with designing circuit boards, I am very interested in communicating and determining if we can do business together.

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  • $20 USD/hr Apr 25, 2014

    Please do not accept this project. I have a few questions before I can offer a project. Are you available to chat?

  • $755 USD Dec 24, 2013

    I need a Simple GSM Data logger that is based on SIM900 (or similar) GSM modulethe devices should have its own internal memory (SD card)the device inputs/ outputs should be programmed via commandsall parameters such as recording interval, recording time, .... should be programmable via commands (USB and or GSM commands)the recorded data on the SD card should be read directly via Excelthe device should transmit the data via GSM (programmable) by html POST and/or GET and/or to a server Portthe device should have an internal chargeable batteryComplete firmware in embedded C (preferred to based on Atmel but not a must), eagle PCB and schematic must be providedthe PCB should be designed to fit the standard DIN case we will provide.

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  • $3000 USD Jun 27, 2013

    [Project]GSM/GPRS Tracker with sensors for Low Power Application. Module will be dormant most of the time, wake up periodically to check for an incoming SMS, and if an incoming SMS is there, answer with the location of the tracker. [Components]- GSM/GPRS + GPS (SIMCO908)- Compass (AK8975)- Accel (LIS331DLH)- Battery Level Monitor (LTC2942-1)- Microcontroller TBD- GSM/GPRS + GPS Antenna TBD[Requirements] Please see attached block diagrams.[Taks + Milestones]1- Discussion on Components and FW functionality. Draw by hand HW block diagram. Schematic Capture. Board Layout. (MILESTONE1 $ TBD)2- Spin Two Boards, Debug (MILESTONE2 $ TBD)3- Code FW discussed in basic FW block diagram in (1). (MILESTONE3 $ TBD)[Deliverables]- Schematic Capture- Board Layout- Source Code for FW- PCB (physical board, HW)[How to Bid]Place a total bid and indicate three milestone payments as indicated above.

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    Artem does not have any open projects.
    Artem does not have any work in progress.
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Portfolio

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Résumé

Experience

Engineer

Oct 2007 - Present (6 years)

Institute of Applied Electronics

Graduate Student

Oct 2007 - Oct 2010 (3 years)

NTUU "KPI"

Student

Sep 2001 - Jul 2007 (5 years)

NTUU "KPI"

Education

Master

National Technical University of Ukraine 'Kyiv Polytechnic Institute'

2001-2007

Ph.D

National Technical University of Ukraine 'Kyiv Polytechnic Institute'

2007-2013