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Fixed Price: Not Sure   |  Posted: Dec 14, 2015  |  Closed  |   0 Proposals
You will be required to design a 'Night Timer' system .The timer should have four 7-segment LEDs i.e. should count up to 59 minutes 59 seconds in increment of 1 second.there should be a pause and reset button. 1. Four 7-segment RED LEDs. 2. One PAUSE button and one RESET button to pause and reset the timer as needed. 3. You need to use and configure a Light Dependent Resistor for that purpose. (Note: Multisim does not make provision for LDRs so to simulate your design you have to use an Opto-coupler and potentiometer combination to represent the LDR). 4. You need to use a step-down transformer as the system will have a 230V AC supply and the timer should operate on 9V DC. 5. You MUST ONLY use the following components in your design: Power Source, Transformer, Optocoupler, Potentiometer, switches, LED Display, Resistors, Capacitors, Transistors, Diodes, Basic logic gates ICs, Decoders, Timers, Counters and Flip-Flops. 6. You CANNOT use Programmable ICs, Micro-controllers or M...
Category: Electrical       

k****shg
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| k****shg
|    Mauritius
Fixed Price: $5,000 - $10,000   |  Posted: Nov 30, 2015  |  Closed  |   13 Proposals
PLEASE READ AND SIGN NDA. PROJECT REQUIREMENT DOCUMENTS WILL BE RELEASED IMMEDIATELY AFTER RECEIPT OF SIGNED NDA. We have a project which requires HANDS ON experience of 5+ years in the following domains. Please respond only if you meet requirements. ? Microchip PIC24F series micro-controller ? Modification of existing source code to add wireless connectivity using TCP/IP to our AssetPro (A cloud based application which interfaces with several of our devices) ? Change event structure to comply with AssetPro application so data sent from the charger can be interpreted by the AssetPro (Current event structure does not comply with AssetPro communication protocol) ? Integrate UART based Wi-Fi module (HF-LPB100-0) interface to PIC24F ? Integrate UART based BLE module from Microchip ? RN4020
Category: Electrical       
Preferred Location: North America, Eastern Europe, Eastern Asia

a****tor
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| a****tor *
|    United States
Fixed Price: Less than $500   |  Posted: Sep 08, 2015  |  Closed  |   17 Proposals
As the title states, I need some guidance (and circuit diagram) on a very basic design that uses both an Adafruit Trinket 5V micro-controller and a Hall Effect IC sensor (links below). Basically need the hall effect sensor to notify through USB when flagged. If you can code in Arduino, there's extra work in it for you.   [obscured]  /introducing-trinket/pinouts   [obscured]  /datasheet-pdf/pdf/547695/OHHALLSENSOR/OH44E.html
Category: Other - Engineering &...       

****
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| Client
|    United States
Fixed Price: Less than $500   |  Posted: Aug 06, 2015  |  Closed  |   6 Proposals
I have created a prototype of a web-connected bulb using a Raspberry Pi micro-controller which connects to WiFi, a PowerSSR Tail that is controlled by the GPIO of the Raspberry Pi (  [obscured]  /pages/powerssrtail.aspx), and a standard light fixture. I would now like to move my design forward, in order to produce several dozen units. I would like to miniaturize my design into a compact and easily-produceable design. I do not know exactly what shape the design should take, so I am open to suggestions, whether it be soldered components or a complete PCB. The design will need to split mains power from a standard plug into three 'paths': one to the micro-controller at the appropriate rate, one to the SSR without any rating-change, and one to a powered speaker, again at the appropriate level. I will need help selecting and sourcing components as well. Inquire for more information!
Category: Electrical       
Preferred Location: North America

j****fer
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| j****fer
|    United States
Fixed Price: Not Sure   |  Posted: Aug 02, 2015  |  Closed  |   14 Proposals
Provide the following: 1. Hardware Selection and Bill Of Materials, including manufacturers datasheet, software and or operations manual 2. Provide System Overview and description 3. Provide a general arrangement drawing For the following. Theatrical Revolving Stage Control System using Arduino Micro Controller with DMX512 and Midi Shields as Operator Input Options and CanOpen(CAN) Shield for field device Input/Output interface(CanOpen for Rotary Encoder position, Variable Speed Drive Send/Receive, Digital IO). Overview We want to develop a Control System for our Revolves (Cueing Software and manual control), whereby we can allow our customers to use MIDI tracks and/or DMX512 lighting commands to position etc our Revolve0750 to Revolve10800 revolving platforms and stages. This project is merely to select correct Arduino products, provide all documentation and software of the selected products,as well as a general arrangement drawing and bill of materials of all selected products fo...
Category: Electrical       

t****ant
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| t****ant
|    Australia
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Aug 02, 2015  |  Closed  |   13 Proposals
Hi, I am in the process of working on a device which utilizes an ESP8266 wifi module, specifically the ESP-12 variation. The module will be controlling a bank of 4 to 6 RGB leds. I have nearly everything working, but there are some issues and I am a noob when it comes to electronics. I am looking for a go-to person who is fluent in electronics, integrated circuits and micro-controllers such as Arduino and the ESP8266 module who can assist me when I have questions and provide consulting/guidance guidance when it comes to helping me plan resistors, transistors, wiring layout, etc. over the course of the project. This is a small project, and I will have just occasional questions and need occasional assistance. I am looking for someone who can charge by the hour to provide consulting on an as needed basis.
Category: Electrical       

l****abs
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| l****abs
|    United States
Fixed Price: Not Sure   |  Posted: Jul 31, 2015  |  Closed  |   16 Proposals
Mechanical/Electrical/Industrial Engineer wanted!! Incredible opportunity to make a difference and make money/equity. BACKGROUND: We have finished wearable technology photo device with a 2 Mega Pixel camera. It is now time to make the 6-8 megapixel prototype/working model. -The 2MP PCB board layout is completed. -We are using BLE or Wifi for the prototype. -You should program micro-controller/processor. -The prototype must be ready to be replicated overseas. Your device will help thousands. -Our Software/App is nearly finished. You are not expected to have software experience. TOOLS: You will receive all of the know-how and components from our previous prototypes. You can get our patent application, that might help problem solve the new prototype. You will also get Computer Generated Graphics and Industrial Design Sketches. TIME FRAME: Approximately 40 hour estimated time to completion. This could be 3 or 4 days of intense work or spread over one and a half weeks. BONUS: Most of...
Category: Mechanical       

c****itz
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| c****itz
|    United States
Fixed Price: Not Sure   |  Posted: Jul 24, 2015  |  Closed  |   24 Proposals
I would like to create a circuit that controls 2 muscle stimulating electrode pairs with an arduino UNO micro-controller. Attached is the current circuit which works well for the stimulating electrodes, however there are a few changes I would like to implement to this configuration: - I would like to be able to adapt this circuit so I can control their on/off state using the arduino. This includes precise timing of when the electrode's become active and the duration for which they remain in the 'on' state. - I would like to be able to keep the integrated intensity control If this is a job you would like to take on, please do not hesitate to contact me and I will be happy to discuss details, any queries you may have and provide a full request for quotation. Kind regards, William Markiewicz
Category: Electrical       

W****mkz
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| W****mkz
|    United Kingdom
Fixed Price: $1,000 - $5,000   |  Posted: Jul 22, 2015  |  Closed  |   13 Proposals
Need to develop a GPS tracker, Engine Shut Off, and Passenger Weight Checking device for CNG cars. This device will be outfitted onto CNG cars and will transmit the data through GPRS GSM sim to a central server. The central server can send out requests to shut off the engine. If weight checker is not possible, we need a switch for the driver to indicate his ability. Switch up for available, switch down for not available. Each device should cost under $40 USD to produce. The device can be built with micro controller parts found around electronics stores. The server side aspect can be done by us but if you have experience developing software as well, that is a plus. The software for the micro controller will have to be developed by you. Please provide past work examples, your experience, and how you intend to build such a device. Include the code "343" in your response so I know you read the description. Very important that all these parts can be sourced in Bangladesh or...
Category: Electrical       
Preferred Location: Bangladesh

****
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| Client
|    United States
Fixed Price: Not Sure   |  Posted: Jul 19, 2015  |  Closed  |   16 Proposals
I have a programmable infrared TV remote control that that I need to clone the PCB. I'm needing the full schematic, Gerber files and other necessary files to recreate this board. This remote control uses a removable but programmable micro-controller. It's a PIC16F648A that sits inside of a socket (16F648). It contains two Infrared LEDs, a 9A104G resistor, a 10v capacitor, 4.000MHz Crystal and several very tiny resistors on the other side. This remote is powered by 4 AAA batteries. This PCB board is about 2" wide and about 8" long. Also a primer on the circuit and how it works would be great! Also, I have pictures of the PCB that I can provide.
Category: CAD       
Skills: 3D Modeling, AutoCAD, OrCAD       

b****lee
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| b****lee
|    United States
Fixed Price: Not Sure   |  Posted: Jun 25, 2015  |  Closed  |   8 Proposals
This is phase 1 of the project. Writing VHDL code to convert 12 K hz to 40 K hz HS video signals to standard VGA video signals using a FPGA and external RAM for screen display. Input signals will be digitized for the FPGA from a Analog AD9880-KSTZ-150, On screen display ( OSD)and input processed by a STC12LE5624AD micro controller. Input signals to be converted are STYLE (RGB(A), RGB(D), SOG, YUV, RGBS, RGBHV and YPbPr). OSD control will have Horz. position, width, Vert. position, height, phase, sync ( separate HV, composite HV, SOG and YUV. Resistance setting (75 ohm, 750 ohm) Scanning (progressive, interlaced).Screen resolution ( 640 X 480 and 800X600). Also in the OSD window it will show in real time the VS and HS input frequency. THE OSD function will display on default when no signal is present and have a time out to close when not being used. We will supply a prototype board for testing the VHDL code via a JTAG interface. And will provide a schematic of the prototype.(ID: 74...
Category: Other - Engineering &...       
Skills: Verilog / VHDL       

r****103
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| r****103
|    United States
Fixed Price: $500 - $1,000   |  Posted: Jun 19, 2013  |  Closed  |   21 Proposals
- Project based work for prototype product concept with renewable energy integration (solar power) - Full-time employment option based on successful project and overall performance - Strong programming skills in C/C++ (Arduino) - Understanding and/or experience with PLC, SCADA, HMI, VFD, Control Panel designing, chip programming, Embedded C, Advance C, PIC, ARM, micro controllers, GSM and GPS modules.
Category: Product Design       
Preferred Location: United Arab Emirates

****
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| Client *
|    United Arab Emirates
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