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slavaten

Android / Electronics developer

Username: slavaten

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Location: Khabarovsk, Russian Federation

Member since: October 2006

Reputation:

4.8/5

(18 reviews)

5.5
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1 user has recommended this freelancer.

My projects:

  • $150 USD
    5.0
    Profile image for Seller twogh

    twogh

    7 days ago

    He did very well and I really want to work with him again.

    Project Description:briefly, basic function coding. I'm studying ARM board with stm32f4discovery board. I want to develope wireless communication function with nrf24l01 chip. But it's very hard for me because this is my first time to study ARM...
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  • $900 USD
    5.0
    Profile image for Seller marshall9

    marshall9

    27 days ago

    very good embedded developer, slavaten always goes the extra mile to ensure that the project is completed to my satisfaction, i have no hesitation in recommending him to other people.<br/>

    Project Description:I have ongoing work related to our previous project &#039;Optimize USB Mass Storage Transfer Speed and FatFS DiskIO Speed&#039;
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  • ₹10000 INR
    4.0
    Profile image for Seller suryaswaroop

    suryaswaroop

    Mar 18, 2014

    Good Nice to Work With Him

    Project Description:I have a Beagle bone Black and Installed TI Prebuit Image Android JB 4.3. Need to Design an Android App (*.APK) for LED Blinking
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  • ₹25000 INR
    5.0
    Profile image for Seller vikramnadgir

    vikramnadgir

    Feb 26, 2014

    satisfied with the work he has done. This guy is good , has patience &amp; very good commitment. we will Definitely hire him again.

    Project Description:[This is a Private Project. You must be logged in to view the Project Description]
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  • ₹11111 INR
    5.0
    Profile image for Seller vikramnadgir

    vikramnadgir

    Feb 20, 2014

    He is very good at USB HID and will definitely hire again.

    Project Description:We need help to make the USB HID java API to work with our hardware controller. This controller is based on a ARM processor. We need a the correct class file which sends and recieves data using USB HID ...
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  • $600 AUD
    5.0
    Profile image for Seller marshall9

    marshall9

    Jan 25, 2014

    Very good outcome from this project, it turned out being bigger than first expected and slavaten just dug in and finished it, very happy with how he works.

    Project Description:I Need a project that incorporates 3 different modes 1) USB Mass Storage 2) Virtual Com Port 3) FatFS Disc IO The board is a STM32F103RB micro SD card access via SPI1 Should support cards from 2GB to...
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  • $130 USD
    5.0
    Profile image for Seller tanjum86

    tanjum86

    Jan 16, 2014

    Great guy to work with. Did the job fast and never lost patience. He worked with me to develop the software without having the actual board. That was very impressive, and it shows he knows what he is doing. Good debugging skills, always stayed in touch and finished the project on time. Would definitely love to work with him in the future.

    Project Description:I have a development board with a keypad lock firmware. You need to write firmware to add a calculator and a thermometer functionality to it. A very simple project. Please only bid if you can finish this project in two weeks...
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  • $100 USD
    4.8
    Profile image for Seller mrinnovation

    mrinnovation

    Jan 3, 2014

    Does great work! He's fast and knows what he's doing.

    Project Description:I am busy with two projects and need some help writing an LCD menu system, PWM, and A/D routines for the Pic32 Microcontroller in the C language. The libraries are already written and included. These programs will be written in the Microchip MPLab IDE so the project can be shared...
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  • $1200 AUD
    5.0
    Profile image for Seller marshall9

    marshall9

    Nov 26, 2013

    Very good person to work with, he wrote the fastest SPI micro sd code i have seen for this project which made the difference between average software and excellent software. He also helped me work through some hardware issues that were preventing the software from working as it should. Highly recommend slavaten, i will be paying him a bonus for this project for a job well done.

    Project Description:[This is a Private Project. You must be logged in to view the Project Description]
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  • $155 USD
    5.0
    Profile image for Seller DandDSolutions

    DandDSolutions

    Oct 12, 2013

    Professional.

    Project Description:We have a STM32F10x MD based board which functions as a logger to capture Data from an Ublox GPS to an SD card - http://www.onetalent-gnss.com/ideas/wireless/rappen10logwi . We would like to add an ISR to it to log a timestamp based on GPSTime + a counter to a separate file alongside the GPS log...
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    slavaten has not completed any projects.
  • [Sealed] In Progress

    I would like to translate an old Fortran90 simulator source code into a C# program, with results displayed in a GUI rather than a text output (3D representation of grid nodes, customizable graphs, and numerical output sheets). I personally have very limited programming experience (VBA, a little Python), but am trying to learn C# for this project. My overall goal with this project is to learn how this type of simulator works and learn C#. I do not want to produce commercial software or make money from these efforts, so my time table is very open.I will have 3 goals for this project...1. Understand the simulator source code, formulas, and inputs that will be required.2. Develop a logical C# program architecture.3. Set the program up in C# to a basic level of operation.

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  • $1500 USD In Progress

    HelloI need someone to write a driver (UART and SPI) for Tiva C arm processor to communicate with ZNP(Zigbee network Processor) based on Z-Stack Home Automation 1.2 from Texas InstrumentsAll the documents required on how to interface is available on TI.com z-stack for home automation 1.2I need this urgently, please show the you understand the project before biddingThe ZNP processor is CC2530 from TI

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  • $800 USD In Progress

    Need to develop a simple circuit which can store a 10 Digit Number like &quot;98-11-28-79-81&quot; in a permanent memory (ROM or FLASH)On pressing of a button, the 10 Digit number read from the memory and is converted to Binary and Frequency Shift Keying (FSK) is applied to generate an audio message. The base frequency being used for the FSK - is around 22 KHZ.This audio is played out aloud through a Ultrasonic Transmitter.The audio will have a preamble for synchronization.We want a small LED Light to be part of the circuit. The LED should light up when the message is being played.If LED does not light up, even after pressing the button - it will automatically mean that perhaps the battery has worn out and needs to be replaced.[Not part of this project] What we want to do is to capture this Ultrasound through an app running on Andriod Phone. The app will be able to decode the audio message and extract the 10 digit number from it. This is being developed separately.Note 1: If it makes the life any simpler, the 10 digit number stored in the permanent memory - could be stored in BINARY, there by avoiding the need to covert to binary.Note 2: We would want to have the cost of the circuit to be as low as possible.

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  • $750 USD In Progress

    I have DOS EEG analysis software that calculates magnitude, phase, and spectral correlation. I need to be able produce the same values as this software puts out in modern windows software. I need someone who can reverse engineer this software and discover the FFT algorithms this program uses.. I can provide the software, EEG data files and scripts needed to generate the numbers I need.

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  • $20 USD/hr In Progress

    I have ongoing work related to our previous project &quot;Atmega firmware for calculator and thermometer&quot;

  • $20 USD/hr In Progress

    Hello,I am looking for an electronic/software engineer. I´d like to develope a usb radon detector. An example for a similar device (temperature detector): http://dev-random.net/temperature-measuring-using-linux-and-raspberry-pi/I´d like to read the radioactive level on a simple unix system like a raspberry brings it.There are already some electonical radon detectors on the market but all are in portable devices like this one: http://www.corentium.com/uk/technologyAre you interested, if yes, you can add me at skype: rudl88best regardsRudolf

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  • $25 USD In Progress

    We are looking for someone to make an Arduino Library for the Maxim Integrated - MAX14920/ MAX14921 chip. We have the source code in .c/.h for the chip on another system so it just have to be converted to Arduino.We need to have the ability to report individual cell voltage as well as percentage left in the battery pack and ability to configure the amount of cells used (3-16 cells) as well as battery chemistry used and balancing the cells. Also the ability to detect shorts between wires, as well as open-wire conditions. The information should be supplied to LCD.print and Serial.print.We will supply a full data sheet of how the device connects to the Arduino and data sheets for the SPI interface on the MAX14921 chip is included below as well as full scource code. Also full data sheet with SPI details will be supplied together with information on how the chip is connected to the Arduino board. There will also be full support availible from Maxim Integrated via e-mail for any questions.Maxim Integrated - MAX14920/ MAX14921 chiphttp://www.maximintegrated.com/datasheet/index.mvp/id/7696/t/alhttp://datasheets.maximintegrated.com/en/ds/MAX14920-MAX14921.pdfBids over 50 USD will be ignored.PLESE NOTE this bid limit!

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  • $100 USD In Progress

    We have an RS232 sensor that recieves data via a serial port on a computer, we need the incoming data processed from one format to another and transmitted onto a virtual serial port. We also need some verification done on the incoming data. Incoming data example $PEXM,xxx,xa,yyy,ya,zzz,za xxx =? X Axis rate xa = X Axis accleration yyy =? Y Axis rate ya= Y Axis accleration zzz = Z Axis rate za = Z Axis accleration this data would need to be converted into degrees for xx.x (x axis degrees) and yy.y (y axis degrees) and meters + or - for zz.zzz $PFEC,gpatt,000.0,xx.x,yy.y, $*PFEC,*GPhve,zz.zzz,A We would a gui to setup the input port and baud rate we would need the data to be sent to a virtual com port (settings defined with a gui again) Any questions please dont hesitate to ask The output formate is in rate and acceleration. This needs to be taken from a 0 refrence and taken as + and - absolute value.? ## Deliverables * * *This broadcast message was sent to all bidders on Monday Nov 23, 2009 4:52:40 PM: Hello, Please note that the output format is in rate and acceleration. This needs to be taken from a 0 refrence and taken as + and - absolute value. Can this be done by you ?

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  • [Sealed] Today

    We have a magnetic stripe card reader which connects to the audio jack on an android device to read data on it. We are looking for an individual who can develop a simple app to make it work. SDK/sample codes will be provided.

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  • $1500 USD Today

    I have a company that creates a smart shoe insole check out my website to understand better www.xonano.com. I would like to have an app that can connect to a Bluetooth enabled Arduino micro-controller and stream data to the phone. The phone would have to display an image of the insoles and put a pressure heat map that corresponds to the values that are received from the micro-controller. I would also like to have the program give me information such as cycle time and sequence of impact (i.e. heal, arch, ball or ball, arch heal). I am sure whomever gets this project would have to help me create the specs better.

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  • $200 USD 2 days ago

    Hi, I&quot;d like you to make a program that decompiles xsc files then lets ms edit it in a editable form not hex then recompile it. http://www.mediafire.com/?i130ymmb4mw4jimHere are sone for testing

  • $700 USD 14 days ago

    We need an app that can read in data coming through the headphone jack. This data will need to be graphed vs time. We also want to be able to display and save the maximum value for each data group. The app will need to display the data very quickly and also be able to compare the maximum value to previous saved values.

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  • $700 USD 14 days ago

    We need someone to design the electronic circuit to take the voltage values output from a piezoelectric sensor and input them through a phone&quot;s headphone jack. The signal into the phone needs to be in a form that an app on the phone can read and understand. In addition, any power the circuit needs should be drawn from the headphone jack of the phone. We will need this design to be made into a PCB layout as well.

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  • $750 CAD 16 days ago

    Develop an app that has:- Ability to read USB OTG data and parse / decode data - Create a graphical GUI that would display some of this data in realtime- Log all data from USB OTG - Email capable- Colour selections for interface, etc- Write to USB OTG (maybe, not sure of this)I am a SW engineer by trade so I will provide a detailed description, graphics, etc. before we start. This will provide a very easy requirement base to work from.Additionally I will need some &quot;proof of concept code&quot; as we go along to ensure that proper progress is being made and that we are in sync for the cost to deliverable schedule.A non-disclosure agreement needs to be signed.I will need to have more details about ownership, how to sell my app, etc.

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  • $2500 USD 19 days ago

    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&quot;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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  • $2500 USD 21 days ago

    Приглашаем к сотрудничеству опытного С/С++ embedded developer со знанием английского языка.уверенные навыки С/C + + 5 лет опыта работы в коммерческих проектахуверенный устный и письменный английский опыт разработки встроенных решений на основе Cortex M0-4 (STM32f407 или аналог), ARM7 (NXP LPC2387 или аналог), AVR, iMX.знания пром. сетей и интерфейсов (CAN , RS232, I2C, SPI )Знание программного обеспечения многопоточной обработки данных FreeRTOS , CTL, пр.TCP / IP (или аналогичный LwIP) знание протокола Modbusзнания файловых систем (FatFs или аналогичный) Знание USB (ST основе или аналогичный)навыки планирования, умение выполнять задачу качественно и в срокУсловия: полный рабочий день, пятидневная рабочая неделя, достойный уровень оплаты. Работа в развивающейся иностранной компании, с интересными задачами и сложными решениями.

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  • $600 CAD Jan 16, 2014

    The PIC32MX150F128D communicates with a 8051 Microcontroller via UART port. This is implemented and working already. What is needed is a function that will allow PIC to write new firmware onto the 8051 using only Rx and Tx lines. Firmware will be saved on external Flash accessible through SPI.

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  • $500 USD Sep 4, 2013

    OK the project is an upgrade to my previous project ECG reader . I need an implementation of a respiratory graph reader now in the same application when it connects via bluetooth to my biomedical device . I feel that this place is very small to mention each and every demand of the project . So if interested to work on this please message me to ask for the detailed word SRS of the project . The project again is with some time constraints . Thanks & Regards

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    slavaten does not have any open projects.
    slavaten does not have any work in progress.
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Résumé

Education

magister

Novosibirskij Gosudarstvennyj Universitet

1974-1980