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Results for 'Integrated Circuit'
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jul 31, 2015  |  Ends: 13d, 22h  |   5 Proposals
Looking for one or two engineers to help design and develop a few devices integrating the CSR1010 Bluetooth Smart (BLE) module with a NFC or RFID Reader. Must have experience with and code samples of CSR microcontroller programming. Project will include some PCB design as well.
Category: Electrical       

u****ope
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| u****ope
|    United States
Fixed Price: Not Sure   |  Posted: Jul 30, 2015  |  Ends: 27d, 22h  |   13 Proposals
Temperature control utilizing a 1000 ohm RTD input designed to output to a 3-32vdc solid state relay. The temperature control features power saving functions such as standby (reduced heat) and sleep (self power off) modes, a remote encoder / pot w/ momentary for user input, LED display and other calibration parameters. There should be an output to power (activate) other or additional modules and sleep mode may be inhibited by an external feedback from such other modules. Of particular interest is temperature calibration and related duty cycle settings as described later.
Category: Electrical       

p****ian
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| p****ian
|    United States
Fixed Price: $20 - $60   |  Posted: Jul 29, 2015  |  Ends: 11d, 11h  |   9 Proposals
I have an Autometer Speedometer that puts out a square wave at 5 volts DC. The faster the speed, the higher the hertz. I need a circuit that will trigger at 175 hertz and above and turn off below 175 hertz. It has to be powered by a 12 volt DC source. Would prefer if possible that the hertz setting can be made variable. I need it to put out a negitive trigger for a relay.
Category: Electrical       

e****to1
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| e****to1
|    United States
Fixed Price: About $20   |  Posted: Jul 28, 2015  |  Ends: 11d, 6h  |   1 Proposal
I have an audio source (portable cd player) connected to an amplifier through the AUX In. At the push of a button (preferably wireless) I need to have a device interrupt the current audio source by lowering its volume and instead feed a pre-recorded message to the AUX In to be played on the Receiver. The message is no longer than 30 seconds. This is similar to PA systems where when the announcers starts to talk the music is lowered. These are my constraint: 1. The solution has to be an existing device (or multiple devices) that integrates with my current setup. No computer solution. 2. I need to be able to easily record a new announcement on the device. 3. The cost should be less than $200.
Category: Electrical       

d****ava
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| d****ava
|    United States
Fixed Price: $500 - $1,000   |  Posted: Jul 28, 2015  |  Ends: 11d, 0h  |   15 Proposals
We are looking for a partner who could help us to develop an IOT box which will contain up to 48 home keys. The box should be able to be opened via password provided though the app which we are building already. The Box will have a safe type pin code lock and the password will be provided via the app. Once the user input the passcode, then the door of the box and lock of the specific key will be opened. The box will be powered via ac adapter and wifi/lan cable should be available. The box size should be under 50cm high, 30cm wide and 10cm deep. The box material can be anything light weight but need to have strength that normal human can not penetrate with bare hand. The box must have water proof version and non water proof version. Below is a spec which we assume. Bluetooth Option Spec: - 5V Power supply for controller - 24V Power supply for lock device - Microcontroller module 400Mhz - Bluetooth 3.0 module - Relay switch - Electric door lock device - Developed firmware - 9-...
Category: Electrical       

m****ly1
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| m****ly1
|    Japan
Hourly Rate: $20 - $30 / hr   |  Duration: 1-2 weeks  |  Posted: Jul 28, 2015  |  Ends: 11d, 0h  |   11 Proposals
We need a working prototype of an kitchen appliance. Professional candidate will start with a document describing how the appliance works and design a circuit, prepare a PCB layout and built the prototype. This prototype involves a infrared sensor, thermostat, fan and a hotplate. This product requires two inputs temperature in Fahrenheit or Celsius and distance in inches or millimeters. Based on input values of temperature and volume, output is varied. Output controls the speed of a fan and resistance to the hotplate. More details about the project are available after signing a confidentiality and non-compete agreement. There is room to pay a higher rate or longer hours if justified.
Category: Contract Manufacturing       
Preferred Location: North America

m****shi
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| m****shi
|    United States
Fixed Price: Not Sure   |  Posted: Jul 28, 2015  |  Ends: 10d, 17h  |   4 Proposals
looking for a company to design and prototype a sliding gate motor with remote controls. A sample sliding motor with remotes will be provided to the right company. The manufacture cost of the motor must be $50. Company must have mechanical and electronic design experience. A sample sliding gate motor can be provided to aid in the design. Most important aspect is to reduce production cost of the motor. Target production cost must be no higher than $50.
Category: Product Design       

r****014
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| r****014 *
|    South Africa
Fixed Price: Less than $500   |  Posted: Jul 26, 2015  |  Ends: 9d, 4h  |   3 Proposals
I am looking for a circuit designer (and possibly builder) who can use Broadlink Home Automation DNA to create an item that work through the Broadlink RM PRO to call lighting scenes. Broadlink is an existing semi-open source home automation system manufactured in China. The electronics seem quite high quality and they have created an aspect to their system called Broadlink DNA. This is a way that almost any other electrical appliance can communicate with the Broadlink hubs. Broadlink is a way of storing and centralizing remote commands for various light switches, TV and airconditioning systems. By using an APP on your mobile the system calls the stored commands and broadcasts them. What I am looking to do is create a unit that has a set of buttons that can be programmed through the APP to call scenes from the Broadlink. The scenes are a series of commands that activate a set of devices. This could be a "arrive home scene" where all the lights in a living area are switched ...
Category: Electrical       

b****own
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| b****own
|    New Zealand
Fixed Price: Less than $500   |  Posted: Jul 26, 2015  |  Ends: 8d, 21h  |   11 Proposals
Hello, I am looking for additional ideas / approached on a LiPo charger circuit. Requirements: Schematic - can be hand drawn if very legible Single cell LiPo battery (100mah, with no secondary protection) +5V input voltage And the final, most difficult requirement... Total BOM cost of <$ 0.20 USD in volume. This will eliminate the typical LiPo single chip charger solutions. Probably will require discrete components. Additional information: Charging source is a USB port so figure 5V 100ma Over voltage charging protection is required. Deep discharge protection is required. There is a micro already available, so a digital I/O and ADC is available for intelligent control. That can be used to enable a series pass transistor, and ADC to monitor voltage. You would need to provide all scaling / and interface circuitry. Low bat indicator is desirable, can use micro ADC if needed.
Category: Electrical       

r****ics
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| r****ics
|    United States
Fixed Price: Not Sure   |  Posted: Jul 24, 2015  |  Ends: 13d, 9h  |   23 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: Not Sure   |  Posted: Jul 23, 2015  |  Ends: 6d, 3h  |   10 Proposals
I need help putting together a control unit for a custom sous vide. I first looked at using a PID system but was told that a programmable touchscreen control could be the better way to go. I have a little electrical background but this is pass me. I need a unit to control the temp and time like a PID but I need preset buttons to hold set profiles. If this is something you could do please let me know. Thank you.
Category: Electrical       

R****use
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| R****use
|    United States
Fixed Price: $70 - $100   |  Posted: Jul 22, 2015  |  Ends: 4d, 21h  |   0 Proposals
I am looking for someone to quickly write an mplab harmony project which has a cdc com port and mass storage device and is capaple of reading an at45db641e memory chip. The board we have has a pic32mx250f128d. The memory chip is interfaced using spi.
Category: Product Design       

H****530
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| H****530
|    United Kingdom
Fixed Price: $1,000 - $5,000   |  Posted: Jul 22, 2015  |  Ends: 4d, 19h  |   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

f****h50
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| f****h50
|    United States
Fixed Price: Less than $500   |  Posted: Jul 20, 2015  |  Ends: 3d, 6h  |   6 Proposals
Greetings Elancer's, I'm looking to have a custom flourescent bulb hour meter made in China. I need a design file with a list of all the components needed to make the product. I will need a Gerber file and Bom file of the design. We need the product to be inexpensive to produce (less than $4 per unit) so please use components with that in mind. See attachment for a basic idea of the product. Thank you!
Category: Electrical       

z****llc
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| z****llc
|    United States
Fixed Price: Not Sure   |  Posted: Jul 20, 2015  |  Ends: 3d, 0h  |   1 Proposal
Hitting the golf ball on the 'sweet spot' of the club gives a player the maximum benefit of a proper swing. We need engineer's to help us build a club that will, on impact with the golf ball, identify on a smart phone or on the club it self, where the club struck the ball (position). Some of possible sensors that could be used are vibration sensors, pressure sensors and then triangulate the point of impact and display that on a smart phone (via BT) or on the shaft of the club with some LED indicators. Any freelancer selected, will be required to sign a NDA and provide references for their past projects. Since we are located in NJ, we are looking for freelancers in NJ, NY, PA and close by region only.
Category: Electrical       
Preferred Location: United States

g****edn
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| g****edn
|    United States
Fixed Price: $75 - $100   |  Posted: Jul 20, 2015  |  Ends: 2d, 17h  |   9 Proposals
Note: this is just a simple start to a longer motor speed control project. The goal is to create small circuit and a programming for an MSP430 (G2553 launchpad type would be even better) that generate a PWM pattern, controlled by 3 buttons. 2 PWM pattern should be designed: one is constant speed, another one is going from high to low speed then back to high on 2 second patterns. A button does change between one to the other. 2 other buttons are here to be able to modify the speed in the patterns. one to increase, one to decrease the speed. The output should be : -A drawing (even by hand) of the the components on a breadboard linked to the launchpad -the program for the MSP430 to be loaded using CCSv6 I have done such a circuit on Arduino but I am looking to go to TI430 for production. that projects allows me a head start and to learn too. Thanks for your time
Category: Electrical       

o****b79
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| o****b79
|    United States
Fixed Price: Less than $500   |  Posted: Jul 20, 2015  |  Ends: 2d, 11h  |   9 Proposals
I need the schematics drawn for me so that I can order some PCB. i need the board to include a 5v lithium ion battery charger which i will be connecting leads to and attaching to a mini usb jack. The board will also need a bluetooth transceiver as well as an amplifier in the 6w-10w range. Either with one channel that is 6-10W or two channels that are 3w-5w each. The board will be used to connect to through bluetooth to a phone or computer and then play music through the speaker connected to the included amp, and all run off of the 3.7v-5v lithium ion battery. I AM ONLY LOOKING FOR THE SCHEMATICS NOT BOARD PRODUCTION. I will use these schematics to submit and order PCB's that are as small as possible and include all desired features.
Category: Electrical       

t****n15
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| t****n15
|    United States
Fixed Price: Less than $500   |  Posted: Jul 18, 2015  |  Ends: 11h, 50m  |   5 Proposals
Basically needing an encryption module to use a key to encrypt a set of operating messages/API into encrypted messages, then after passing through it, it is decrypted using a key, and used by a secondary processes or devices to execute instructions or messages/data. This is to protect the data from one device, that docks onto another station for data retrieval etc. So basically, encoding messages or information in such a way that only authorized parties (docking stations and perhaps a reader) can read it.
Category: Electrical       

s****708
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| s****708
|    United States
Hourly Rate: Not Sure   |  Duration: 1-3 months  |  Posted: Jul 18, 2015  |  Ends: 8h, 41m  |   7 Proposals
Programming microprocessors and designing circuits to interface with various components. Arduino experience helpful. Work with ultrasound, magnetic, & other sensors. Control LED light strips, communicate over WiFi or other wireless technology. Interface with other existing systems using I2C, Ethernet, & serial. Must be near KC to install product in existing components on site.
Category: Electrical       
Preferred Location: United States

R****ear
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| R****ear
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jul 15, 2015  |  Ends: 12d, 20h  |   31 Proposals
Hello, We are currently building prototypes for a client and are looking for someone to design electronic circuits for us. The first is a simple low battery level indicator. For the first few prototypes we originally used the open source SparkFun Uh-Oh kit:   [obscured]  /products/11087 Schematic:   [obscured]  /datasheets/Kits/UhOh-v11_corrected.pdf 1) The updated version would need to be able to handle 24 V instead of 10 V. 2) We would like to eliminate the potentiometer from the circuit due to cost. 3) Also power consumption must not go above 25 mA. 4) We need the LED to turn on in the 16 to 19 V range, depending on a resistor.
Category: Electrical       

Y****Roy
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| Y****Roy
|    Canada
Fixed Price: Not Sure   |  Posted: Jul 02, 2015  |  Ends: 30d, 1h  |   18 Proposals
1) RFID based locking solution (Mandatory) ? Making an RFID based lock. ? Integrating the RFID based lock with the Raspberry Pi/Black Beagle. ? The Raspberry Pi should contain the database of RFID tags, which can be updated via an online server (Azure Web can be used to create the web interface), and we should be able to add the RFID tags directly using the web server. ? We must be able to get the logging data (check in time, checkout time, RFID tag no.) on either a note or excel sheet. ? Remember, only one user should be able to use the locker at any given point of time. Reference to how it may look like:   [obscured]  /watch?v=4lra1Y2RsWM 2) Temperature control ? Will be using a simple exhaust fan connected to a relay. ? Measure the temperature using a temperature sensor. ? The raspberry pi should signal the relay to turn on the fan when temperature inside the locker goes above 77 degrees Fahrenheit. 3) Capturing videos and streaming our Internet. ? We need to capture ima...
Category: Electrical       

j****ota
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| j****ota
|    United States
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