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Fixed Price: Not Sure   |  Posted: 1h, 49m ago  |  Ends: 14d, 22h  |   1 Proposal
Hello I have a working relay system that i use for a few years and now i want to upgrade the code for it. Currently i use ATTINY13A to control a Non Latching Relay-DPDT 5V relay (TAKAMISAWA A5W-K) via a momentary spst footswitch. I can supply the schematics ,Hex files and BOM. Currently, when the footswitch is pressed, the uC is waiting until it is released. When the footswitch is released the relay is activated, along with an LED indicator.When this action is repeated,the relay is switched off. What i want to do is to use the same hardware and to add some features to the switching system, such as- 1. momantaty switching (relay is on only when the footswitch is pressed) 2.Reverse/Standard switching (either having the relay acrivated when the footswitched is released or when it is pressed) *Important feature (that is currently implimented) is that when the power supply cuts out, the relay switches automatically to "bypass mode" My request is for the files ,so i can progr...
Category: Electrical       

R****zic
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| R****zic
|    Israel
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jun 28, 2015  |  Ends: 13d, 20h  |   19 Proposals
Programming of microcontrollers as well as PCB design and software review. I am based in worcester ma.
Category: Electrical       

S****gal
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| S****gal
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jun 28, 2015  |  Ends: 13d, 20h  |   4 Proposals
Programming of microcontrollers as well as PCB design and software review. I am based in worcester ma.
Category: Electrical       

S****gal
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| S****gal
|    United States
Fixed Price: $500 - $1,000   |  Posted: Jun 27, 2015  |  Ends: 4d, 19h  |   16 Proposals
We are seeking an embedded design engineer to create a microcontroller-based Bluetooth wearable device. Applicants will be asked to design and prototype a version 1.0 of the device, estimated budget for this phase is $1000. We will likely hire multiple candidates for this phase to find the best developer. The chosen developer will be asked to complete the rest of the project. If this does not make sense, let me know. The basic requirements for version 1.0 are as follows: The device shall use Bluetooth Low Energy (4.0+) protocols. The device shall connect/pair with Bluetooth LE-supported devices, such as smartphones. The device shall be watch-size. The device shall vibrate upon command from the connected smartphone. The device shall have a lithium-polymer battery charging circuit. The device shall send battery level information to the connected smartphone. More detailed requirements will be provided to the chosen candidate(s)....
Category: Electrical       

j****325
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| j****325
|    United States
Fixed Price: $1,000 - $5,000   |  Posted: Jun 26, 2015  |  Ends: 26d, 17h  |   17 Proposals
Short description: In this system, each table in the restaurant gets a battery powered wireless calling device with buttons. When pressed, this calling device sends a wireless zigbee or generic 2.4GHz message that will be received by one or more of the base stations of the system, which are based on Raspberry PI A+. The master base station memorizes the call status for each transmitter so that said information can later be polled over wifi and displayed by apps run in smartphones worn by the waiters. The apps for said smartphones are developed in a separate project ? you don't have to develop them. Deliverables for this project: ? For the calling device; scematics, PCB layout, MCU firmware ? For the Raspberry base station; software (including installer script that makes the software start upon boot) All software must be delivered with source code, and all source code must be professionally written and well documented in English. Suggested milestones (open to discussion before proje...
Category: Electrical       
Preferred Location: Eastern Europe, India/Southern Asia, Eastern Asia

I****tor
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| I****tor
|    Sweden
Fixed Price: $500 - $1,000   |  Posted: Jun 26, 2015  |  Ends: 11d, 8h  |   2 Proposals
We need for services of programming of sip-based intercom on raspberryPI. Features: net connection on i2c and etc.: keyboard, PIR Sensor, rfid / nfs reader, wi-fi, z-wave, 4G, RGB matrix, LED display, dial-up numbers from remotely updated table, two buttons for direct call that should be pressed three times to be activated, audio and video recording upon a motion sensor, upon call an apartment, reading keys, opening of doors with translating of a call to SIP. management of software of z-wave locks, lighting, accepting of signal from a door sensor, checking a connection to Internet. streaming video on-demand. image correction software from a wide angle lens.
Category: Other IT & Programming       

b****unh
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| b****unh
|    Kazakhstan
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jun 25, 2015  |  Ends: 10d, 22h  |   3 Proposals
Using nRF51xxx chip with pre-programmed softdevice to integrate on chip PWM output, ADC, SPI (read only) and BTLE stacks and some digital outputs. SPI is dual channel higher speed ADC (want to momentarily read 250kHz-500kHz) System clock uses 16MHz external crystal and internal RC 32kHz circuit. Desired PWM will be configurable via BTLE but will be around 100kHz.
Category: Other IT & Programming       

n****ldc
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| n****ldc
|    United States
Fixed Price: More than $10,000   |  Posted: Jun 24, 2015  |  Ends: 9d, 19h  |   50 Proposals
YOU MASTER AS MANY AS POSSIBLE OF THESE SKILLS: .NET 3D Modeling 802.11 Protocol Adobe Creative Suite Android Animation Art Direction Backbone.js Bioinformatics Book Authoring Branding C C# C++ CAD Character Design CHEF Chukwa Concept Art Content Marketing Corporate Presentations CSS D3.js Database Optimization Data Science Data Visualization Devops Django Electrical Engineering Embedded Development Ember.js Facebook API Flume Front-end Markup (HTML, CSS) Game Design GIS GLSL (OpenGL Shading Language) Google App Engine Google Glass SDK Google Maps API Hadapt Hadoop Hardware Design HBase Hive HTML Illustration Illustrator InfiniDB iOS Java Javascript jQuery LAMP Linux Logo Design Lua Machine Learning Mahout Microcontroller Programming Mobile Design Mobile Web MongoDB MySQL Network Science Networking Node.js Objective-C OpenGL Packaging Design Perl Photography Photoshop PHP Pig PostGIS PostgreSQL Print Design Process Engineering Processing Product Strategy Project Management Puppet / Ch...
Category: Web Programming       
Skills: MySQL Administration, Javascript, PHP       

p****sta
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| p****sta *
|    Norway
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jun 24, 2015  |  Ends: 9d, 16h  |   9 Proposals
Develop C/C++ code for various network accessible embedded devices both RTOS supported and running as bare metal. Development tools are executed on both Windows and Linux platforms. In depth knowledge of microcontrollers while specific experience with Freescale Kinetis development tools and MQX RTOS preferred. Create Bootloaders and device drivers UART, I2C, SPI, A/D, USB, I2S... Ability to debug by reading schematics / data sheets and using tools such as oscilloscope, logic analyser, wireshark, jtag debugger... Create test firmware for newly designed prototype hardware. Write HTML, CSS, Javascript ,XML, JSON as required. Understanding of network TCP and UDP protocols and both client and server perspectives of communication. Basic understanding of network routing. Knowledge of ARM architectures. Experience with embedded Linux. Familiarity with version control systems such as Subversion Knowledge of video and audio processing a plus. Understanding of TLS/SSL security a plus Experienc...
Category: Other IT & Programming       
Skills: C, ARM, RTOS, Device Driver Development       
Preferred Location: United States

a****dev
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| a****dev
|    United States
Fixed Price: Less than $500   |  Posted: Jun 23, 2015  |  Ends: 9d, 2h  |   7 Proposals
Hi. I need some example code for STM32F103RBT6 MCU. Example will consist of below: GPIO, ADC, UART (Interrupt based), Flash Read/Write, Timer-RTC, PWM, Low Power Modes, SPI (SD Card). Programming environment need to be Keil MDK 5.14 and HAL Driver (STM32CubeF1). Developer must need to have Dev Kit of STM32F103RBT6 MCU. Detail specification will be provided. Thanks. Regards.
Category: Other - Engineering &...       

s****naz
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| s****naz *
|    Bangladesh
Hourly Rate: $30 - $300 / hr   |  Duration: 7-9 months  |  Posted: Jun 23, 2015  |  Ends: 8d, 18h  |   8 Proposals
To provide better solution with my existing skills and experience in all areas of Computer and Software problem under critical situation. To understand the intricacies of the Computer field by way of actual hands on experience and dealing with daily Computer problems.
Category: Other IT & Programming       

G****161
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| G****161
Fixed Price: Less than $500   |  Posted: Jun 22, 2015  |  Ends: 7d, 17h  |   4 Proposals
Hi there I am currently working on a project that runs with an MCU, my current setup (adjustment) require the user to change the setting of the MCU through a 16 position hex rotary switch. I would like to upgrade this part of project and adjust the muc through an ANDROID APP over TCP Socket. note: the ESP-12 is connected to an STM32 microcontroller over TX/RX ports. Please bid reasonably.. Thanks
Category: Mobile Design       
Skills: Android, iPhone App Development, Java, TCP/IP       

h****omy
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| h****omy
|    China
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jun 22, 2015  |  Ends: 7d, 6h  |   10 Proposals
We are working a stm32 based controller board.It would have the following features 1. 2 DC-DC converter 100W each 2. 2 DC-DC Converter 10W each 3. 144Pin QFP microcontroller 4. Analog sensor Interface 5.I2C/SPI/FSMC Interface I am attaching a incomplete schematics with this job requirement.We expect this to be a maximum 6 layer board.We expect to be on a kicad. Any other layout package is also fine. We expect a limited support for a some time. Thanks Prabhu.G
Category: Electrical       

p****jan
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| p****jan
|    India
Fixed Price: Less than $500   |  Posted: Jun 21, 2015  |  Ends: 6d, 17h  |   10 Proposals
I need you to design the schematics/programming of a microcontroller based magnetic card reader. The device must store to an onboard flash chip and be interfaced by USB. It must be ultra low power and not have a standby mode. Further information available
Category: Electrical       

c****593
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| c****593
|    Australia
Hourly Rate: Not Sure   |  Duration: 3-4 weeks  |  Posted: Jun 21, 2015  |  Ends: 81d, 12h  |   15 Proposals
We seek to develop a solar powered greenhouse automation system for small holder farmers in Kenya. The system should have 3 wireless sensors that measure temperature, humidity and soil moisture. These sensors also have small solar panels with an inbuilt battery to power it during the night. The approximate range of the sensors should be 300feet. The sensors are then connected to the main gateway which is programmed to receive impulses and convert them to messages to be sent to the farmer via SMS on their mobile phone using a GSM module. This enables remote monitoring of the greenhouse from wherever a farmer is just by simply texting the system. The system also using the soil moisture sensor should be able to automatically regulate the water channeled through the driplines by opening and closing the solenoid valve which should be solar powered too. This will ensure accurate and more efficient use of water channeled through the driplines. The farmer should also be able to self irrigate t...
Category: Product Design       

t****ich
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| t****ich
|    Kenya
Fixed Price: $50 or less   |  Posted: Jun 21, 2015  |  Ends: 6d, 8h  |   7 Proposals
I am going to be using a PIC16f877 Microcontroller to read a potentiometer voltage between 0-5v DC. When each of the thresholds listed below is crossed, I would like a different digital output to be "high" while the other 7 outputs will be "low". You can use any 8 digital outputs. 0 - 0.62 0.62 - 1.24 1.25 - 1.86 1.87 - 2.49 2.5 - 3.11 3.12 - 3.74 3.75 - 4.36 4.37 - 5 I would like the code to be written in C, and annotated well (so I can learn). Thanks!
Category: Other IT & Programming       

n****cts
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| n****cts
|    United States
Fixed Price: Not Sure   |  Posted: Jun 20, 2015  |  Ends: 5d, 20h  |   6 Proposals
Need an experienced programmer who has previously worked with STM32F103 Cortex-M3 microcontrollers. Need to write a code to play the WAV files from SD card to DAC/PWM output. Target MCU: STM32F103C8T6 System Clock Freq: 168MHz Desired IDE: CooCox CiIDE SD Card Interface: Hardware SPI (1 data line bus is enough) SD file system: FAT32 The program has to read wav sound files from SD card and play them into internal DAC or output to PWM. The output mode can be selected by a jumper (DAC or PWM) The PWM frequency should be 328KHz, 9bit resolution. The Sound should be played in two modes, Normal mode and Split mode. The split mode means that the sound amplitudes higher than zero should be output on one DAC channel while amplitudes of lower level than zero should be played on second DAC channel. The same should be also in case of PWM. The modes should be able to select by jumpers. Totally there should be 4 modes Mode 1: DAC normal mode (1 channel DAC) Mode 2: DAC split mode (2 channels DAC) M...
Category: Electrical       

A****dil
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| A****dil
|    Armenia
Fixed Price: Not Sure   |  Posted: Jun 18, 2015  |  Ends: 3d, 20h  |   7 Proposals
Hello ? We have a two phase project that requires an expert with a M2M device control over satellite experience/ background to design a detailed schematic to turn on/off existing simple piece of hardware (self-powered) as needed over a satellite constellation from a work station computer. This detailed schematic will need to show the end-to-end M2M solution and detailed diagrams of all components and their interaction. We will provide the simple schematic of the device that needs to be controlled/"power on/off" through an accessible wiring harness and/or inline power switch or micro-controller over and existing satellite constellation (Iridium/Inmarsat). The device is self-powered and has an existing tri-band antenna. (Avionics/Aerospace engineering background helpful but not necessary) Phase two is to build the prototype(s) and merge with said devices which can be used to demo to Avionics/Aerospace team on a desktop version or over Iridium SDK . We are receptive to h...
Category: Other - Engineering &...       
Preferred Location: North America, Western Europe, Eastern Europe, India/Southern Asia

T****oup
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| T****oup
|    United States
Fixed Price: $500 - $1,000   |  Posted: Jun 17, 2015  |  Ends: 2d, 8h  |   15 Proposals
I am developing a chargeable LED lamp for rural India, and am looking for somebody who will do the embedded software development for this lamp. The initial schematic draft is ready (will be shared later), and the requirements for the software are set as in the attachment. The software will make a PWM signal for controlling the charging circuit, as well as a PWM signal for controlling the LED driver. Scope of Work 1. Selecting of microcontroller and schematic review (a Freescale MC9S08PA4 is proposed) - The controller must meet the product requirement. - The controller must be very cost effective and best in the performance. - Sharing the controller details with the Rural Spark to get approval. - Review and agreement on Rural Spark Schematic for software implementation in product design. - Embedded software person can suggest and provide us the changes in schematic as per software requirement. 2. Write Code - The embedded software will be coded into C/C++. - The Code will be very m...
Category: Electrical       
Skills: Electronics, C++, Microcontroller, Embedded C       

R****ark
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| R****ark
|    India
Hourly Rate: $30 - $300 / hr   |  Duration: 7-9 months  |  Posted: Jun 16, 2015  |  Ends: 1d, 6h  |   8 Proposals
To provide better solution with my existing skills and experience in all areas of Computer and Software problem under critical situation. To understand the intricacies of the Computer field by way of actual hands on experience and dealing with daily Computer problems.
Category: Other IT & Programming       

G****161
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| G****161
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jun 15, 2015  |  Ends: 13h, 48m  |   17 Proposals
Need someone who know Programming Embedded Systems , working with microcontrollers and sensors and real-time monitoring sensors
Category: Mechanical       

r****uba
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| r****uba
|    Croatia (Hrvatska)
Fixed Price: $1,000 - $5,000   |  Posted: Jun 15, 2015  |  Ends: 13h, 26m  |   4 Proposals
Using off the shelf transceivers I will be creating a WAN and LAN. * The WAN is using higher power transceivers (Comms via UART etc). * The LAN will be based on IPv6 transceivers (again comms via UART etc). * Basic sensors and buttons will build up the LAN and will need to be written in (C/C++ etc). The 'Hosting Controller' will be an Arduino Mega 2560 with a customized shield. The controller will need to address both the above transceivers (via UART), a Bio Metric finger scanner (via Wiegand), temporary GPS modules (RS232?) for calibration, and a few I/O ports for basic switching/sensing.
Category: Product Design       

S****003
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| S****003
|    Uzbekistan
Fixed Price: $500 - $1,000   |  Posted: Jun 13, 2015  |  Ends: 73d, 11h  |   12 Proposals
Since I'm often overloaded with work, I am looking for a work buddy. Someone I can trust, and share future projects with. I am very specifically looking for someone living in Davao Region, Mindanao, Philippines. I need to travel several times per year to Tagum City for personal reasons. It would be great to get in contact with some engineers in this area, so we can work together on projects more efficiently. These are the skills I'm looking for: - Circuit Design. You know how to desing electronic circuits (analog and digital), and have preferably some experience with a design program like Eagle, Target3001, ... (or anything similar). - Embedded Software. You know how to program a microcontroller (preferably in C). I myself have experience with 16-bit PIC microcontrollers and will soon learn how to use the Cortex M7 (from ST Microelectronics). Experience with one of these would make our cooperation easier. - IoT (Internet Of Things). For future projects, I will need to focus on micr...
Category: Electrical       
Preferred Location: Philippines

k****ier
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| k****ier
|    Belgium
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