| Project Name | Description | Bids | Avg (USD) | Skill Required | Started | Ends | |
|---|---|---|---|---|---|---|---|
| ...for a schematic design (EAGLE format) and working prototype for charging Lithium Ion/Lithium Poly batteries | 13 | $164 | Engineering, Electronics | Mar 27, 2009 | - | ||
| ...powered battery charger The battery charger circuit should accept available power generated from a standard...charge a lithium ion polymer battery pack with a capacity of about 1500-2500mA. The circuit should als... | 1 | $510 | Engineering, Electronics | Feb 24, 2009 | - | ||
| ...powered lithium ion battery with an integrated charger and led driver circuit | 1 | $500 | Electronics, CAD/CAM, Microcontroller, Electrical Engineering, PCB Layout, | Feb 21, 2013 | - | ||
| ...for a Battery Guru / Expert. We have a wrist wearable communications device design and I need help...custom battery solution that would fit our design and power requirements. Supplier must have skype | Bid Now! | - | Product Sourcing, Manufacturing, Supplier Sourcing | Mar 14, 2012 | - | ||
| ...schematics into schematic capture tool Get an account on www.upverter.com and let me know your username/password ...for each schematic: - Load up the source schematic (a list to do is posted below) - Search for each compo... | 9 | $92 | Data Entry, Electronics, CAD/CAM, Microcontroller, Electrical Engineering | Sep 20, 2011 | - | ||
| ...with a Li-Ion battery charger integrated onto the same circuit board. LED Driver: Provide power to 4...wired lithium ion batteries. (Buck Driver) at least 5 brightness Levels (min - max brightness) Level...series... | 10 | $214 | Electronics, Microcontroller, Electrical Engineering, PCB Layout, Product Design | Mar 5, 2012 | - | ||
| ...shuttling battery equalizer like this one: http://www.electric-lemon.com/?q=node/151 Design it to be modular...either lithium (2V min to 4V max) or lead acid (11V min to 16V max). Therefore the circuit should be designed...(2V-16V... | 8 | $181 | Electronics | Aug 5, 2009 | - | ||
| ...high end battery charger. Thank you to the many people who applie dto the last iteration of this post, the...inside the battery pack and will control the charger IC in the charging cradle. MCU resides in charging...charger Sche... | 15 | $595 | C Programming, Engineering, Electronics, Microcontroller, Electrical Engineering | Apr 19, 2013 | - | ||
| ...circuit schematic drawn up in altium designer. It should supply 9 x 5050 warm white led's. It should...from a battery and should be fairly efficient. It will be run off a single cell li ion battery. Please | 10 | $67 | Engineering, Electronics, Microcontroller, Electrical Engineering, PCB Layout | Feb 7, 2012 | - | ||
...shuttling battery equalizer like this one: http://www.electric-lemon.com/?q=node/151
Design it to be modular...either lithium (2V min to 4V max) or lead acid (11V min to 16V max). Therefore the circuit should be...(2V-16V per | 12 |
$525 |
Engineering, Electronics |
Jul 14, 2009 |
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| | |
| ...design a battery charger and balancer all in one. It will be designed to charge and balance a lipo battery...to the battery and will need to have low power consumption The device should light an led and stop charging...with the b... | 14 | $341 | Electronics, Microcontroller, Electrical Engineering, Embedded Software, PCB Layout | Feb 6, 2013 | - | ||
| ...need a Li-Ion battery pack design for using 2 pieces REPLACEABLE 26650 Li-Ion or LiFePO4 cells. ~ 7.4V nominal...requires a "Battery Fuel Gauge" also, that has to be quite accurate. Housing is SPECIFIC to ou... | 4 | $13 | Industrial Design, Electrical Engineering, PCB Layout | Sep 3, 2012 | - | ||
| ...need a schematic for a powersupply with battery backup; Following are the specification Input: 230V...each Battery: 12V 1.3ah lead acid battery. Working should be as described below, - when connected...and the ... | 15 | $73 | Electronics, Electrical Engineering | May 8, 2013 | - | ||
| ...high end battery charger. MCU will communicate with the fuel gauge IC inside the battery pack and will | 19 | $696 | C Programming, Engineering, Electronics, Microcontroller, Electrical Engineering | Apr 4, 2013 | - | ||
| ...for our battery packs that charges each of the 12 cells in our battery packs individually to 3.6v. ...in our battery pack can be charged at 3 Amps as a standard charge or up to 10 Amps as a fast charge. ...Amps. Our batt... | 13 | $1265 | Electronics, Electrical Engineering | Mar 1, 2011 | - | ||
| ...circuit schematic 2. Design Printed Circuit Board 3. Production of one unit, including component sourcing...circuit schematic -Submit an original editable files. I currently use Eagle ver. 5.11.0 light edition...providing <... | Bid Now! | - | Audio Services, Engineering, Electronics | Sep 10, 2011 | - | ||
| ...design lithium polymer battery pack that will be used in a consumer electronics product. We estimate this | Bid Now! | - | Electronics | Jun 9, 2008 | - | ||
| ...lead acid battery and solar panel. The solar panel puts out 5 Watts / 5VDC. The battery I need to charge...charge the battery (see attached app note) and use MICREL linear voltage regulator MIC29302 (see attached)...from the <... | 9 | $158 | Electronics, Electrical Engineering, PCB Layout | Jan 8, 2013 | - | ||
| ...and 24V battery systems. The regulator must have charge cycles for sealed lead acid, agm, flooded lead...gel and lithium ion batteries. | 9 | $150 | Electronics | Feb 7, 2012 | - | ||
| ...build a battery management system based on the TI BQ77PL900 IC. The batteries are 20 lithium (LiFePO4) | 12 | $688 | Electronics | Oct 8, 2008 | - | ||
| 1) A battery model built by Matlab/Simulink will be provided. (Make sure you are capable to read code/simulink...your own battery model based on the attached paper fig. 2 (Make it 24V, 2 modules) 2) You must design a...accurately the <... | 4 | $587 | Matlab & Mathematica, Electrical Engineering, Automotive, Machine Learning, Mathematics | Jul 5, 2010 | - | ||
| ...recharge a Li-Ion battery (single cell, approx 100mAh). Require a very small, inexpensive chipset circuit. Must | 9 | $961 | Electrical Engineering | Jul 13, 2012 | - | ||
| ...(SimPowerSystem) own battery model to use. The power consumption depends on the time, is given. There has to be created...on the battery level. A similar model as an example is given. The data of the Li-Ion Battery will... | 7 | $193 | Engineering, Electronics, Matlab & Mathematica, Electrical Engineering, Mathematics | Oct 6, 2010 | - | ||
| de-code-ion-cube | 3 | $646 | PHP | Apr 23, 2009 | - | ||
| ...design schematic and a parts list. 4) I need this done in a relativly short time. Please include with...of the battery pack: 20 batteries 24 Volts 80000 mAh or 100000 mAh Please include shipping costs in your | 3 | $382 | PHP, C Programming, Engineering, Testing / QA, Software Architecture, Software Testing, Website Testing, MySQL, Usability Testing | Apr 25, 2002 | - | ||
| ...into a schematic and a PCB. An INA114P amplifies a thermocouple voltage and feeds in into an ADS1211P...rechargeable battery) also interfaces with the ATmega328P as does a 16 switch keypad and a 2 line by 16 character...both the s... | 18 | $199 | Engineering, Electronics, Anything Goes | Jan 12, 2010 | - | ||
| ...to the schematic. After some testing, I am thinking that there may be an inherent flaw with the aux...aux battery that I am using. I am currently using a 3.7v li-poly battery. When it is higher than the...not the batte... | 1 | $100 | PCB Layout, | Nov 28, 2012 | - | ||
| ...poly LI-ION battery power cape. Do the circuit design for the cape. Do the PCB design for the cape. Do | 3 | $616 | C Programming, Electronics, Embedded Software, PCB Layout | May 30, 2012 | - | ||
| ...schematics into schematic capture tool Get an account on www.upverter.com and let me know your username Then...for each schematic: - Load up the source schematic (a list to do is posted below) - Search for each compone... | 20 | $125 | Data Entry, Electronics, CAD/CAM, Microcontroller, Electrical Engineering | Oct 6, 2011 | - | ||
| Electronics | Apr 15, 2009 | - | |||||
| ...receiver schematic and parts list. This is a very simple circuit. Transmitter will have a switch on it...or AC (battery or 110- wall wart) - Receiver needs to be tiny, smaller than 2"x0.5"x1" ... - Schematic... | 10 | $117 | Wireless, Electronics | Jun 4, 2009 | - | ||
| ...simple battery powered electronics device with an alarm. The work we are looking for includes: ... Schematic design component specification (BOM) PCB layout (optional) Device description: Battery | 21 | $182 | Electronics | Feb 14, 2012 | - | ||
| ...schematics into schematic capture tool Get an account on www.upverter.com and let me know your username/password ...for each schematic: - Load up the source schematic (a list to do is posted below) - Search for each compo... | 7 | $122 | Data Entry, Electronics, CAD/CAM, Microcontroller, Electrical Engineering | Sep 20, 2011 | - | ||
| ...schematics into schematic capture tool Get an account on www.upverter.com and let me know your username Then...for each schematic: - Load up the source schematic (a list to do is posted below) - Search for each compone... | 14 | $105 | Data Entry, Electronics, CAD/CAM, Microcontroller, Electrical Engineering | Sep 23, 2011 | - | ||
| I need schematic and set of printed circuit design for the RF Transmitters and a set of printed circuit...Energizer A23 Battery DIP switches addressing on transmitter. led indicator illuminated by pressing channel...powered: 9v bat... | 10 | $578 | Electronics, CAD/CAM, Electrical Engineering, PCB Layout, Assembly | Nov 6, 2012 | - | ||
| ...a PCB schematic and take care of everything regarding the project (hw, fw, ..). Preferably if there is...Accelerometer, battery, PIC). 2- Firmware. 3- Mechanical design (case and cooling), and all needed manufacturing | 17 | $1393 | Engineering, Microcontroller, PCB Layout, GPS | Jan 4, 2013 | - | ||
...A NiMH battery pack consists of qty 2 AA NiMH cells in series with a over-current device (solid state...points: 1. Battery stack + terminal 2. Battery stack - terminal 3. Positive (or negative) external connector...external | 1 |
$42 |
Anything Goes |
Nov 18, 2009 |
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| ...7200mah lithium polymer battery Output voltage= 7.3vdc I need a design made to automatically adjust the | Bid Now! | - | Electronics | Jul 22, 2007 | - | ||
| ...rechargeable battery. A switch to turn on the device and leds should be provided to indicate beginning / end | 6 | $379 | Electronics, Microcontroller, Electrical Engineering, PCB Layout | May 27, 2012 | - | ||
| ...RECHARGEABLE BATTERY POWER SOURCE IN CUSTOM CASING BATTERY Type: Li ion with built in circuit protection | 7 | $1371 | Electronics, Manufacturing, Manufacturing Design | Jan 13, 2012 | - | ||
| ... LED, Battery, Battery Holder. I need that breadboard that I have tested and working, turned into a...a Schematic, and then translated into Gerber files. The goal is for me to receive the files of both the...the schematic... | 20 | $87 | Electrical Engineering, PCB Layout | Dec 7, 2011 | - | ||
| ...rugged battery tube, a 17 point design checklist (safety specifications, mostly intuitive and logical)...final schematic level with all solidworks, g-code, and mold specifications completed. 3. Design Deployment | 4 | $910 | Industrial Design | May 10, 2012 | - | ||
| Electronics, CAD/CAM, PCB Layout | May 1, 2012 | - | |||||
| Engineering, Electronics, Electrical Engineering, Materials Engineering, PCB Layout | Jul 12, 2011 | - | |||||
| Engineering, Electronics | Apr 28, 2009 | - | |||||
| ...individual (per-battery) voltage in a series string of 12 volt batteries while the batteries are connected and...the same battery and have reasonably similar voltage reading.) Circuit must be powered by separate power...single ... | 25 | $186 | Electronics, Electrical Engineering, PCB Layout | Nov 9, 2012 | - | ||
| ...build a lithium battery charger and would like to ask about the circuitry that would be required. I don't...details or a schematic at this point. At this point, I basically need to know whether or not what I'd like | 1 | $50 | PCB Layout, | Jul 30, 2012 | - | ||
| ...a PCB schematic and take care of everything regarding the project (hw, fw, ..). I need a GPS tracker...Accelerometer, battery, Processor, Camera). 2- Firmware. 3- Mechanical design (case and cooling), and all needed...internal ... | Bid Now! | - | Electronics, Microcontroller, Embedded Software, PCB Layout, Anything Goes | Mar 29, 2013 | - | ||
| ...VDC Car battery recharged by solar panels. The energy is then converted to 220-240 VAC using power inverter | Bid Now! | - | Graphic Design, Illustration | Apr 27, 2013 | - | ||
| ...a 3.7v lithium rechargeable battery. The PCB board will have 10 push buttons connected to it. When you...charge the battery or to download the button key strokes that were pressed. Its very simple. We need someone | 26 | $2266 | Electronics | Jul 27, 2010 | - |
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