| Project Name | Description | Type | Bids | Avg (USD) | Skill Required | Started | Ends | |
|---|---|---|---|---|---|---|---|---|
| Create a charge shuttling battery equalizer like this one: http://www. ... wide voltage range (2V-16V per battery). The maximum amount of current ... to the circuit: -If any battery voltage gets too high or ... above and make a PCB schematic with gerber files for PCB ... | Fixed | 12 | $525 | Electronics, Engineering | Jul 14, 2009 | - | ||
| I require the electronic circuit schematic for an electronic device, a paper scanning machine. The device is to scan ... . It must have an automatic document feed motor. The schematic is to be completed with altium software or ... | Fixed | 1 | $200 | Electrical Engineering, Electronics, Mechanical Engineering, Product Design | May 8, 2012 | - | ||
| Create a charge shuttling battery equalizer like this one: http://www.electric-lemon ... what the system is doing- balancing, balanced. -Circuit should enter a low power mode once ... as listed above and make a PCB schematic with gerber files for PCB production. ... | Fixed | 8 | $181 | Electronics | Aug 5, 2009 | - | ||
| - Manually enter electrical schematics into schematic capture tool Get an account on ... battery charger. charging current is about 1c. Schematic and BOM: http://www.extremecircuits.net ... 90v from a 1.5v battery power supply. Schematic and BOM: http://www ... | Fixed | 9 | $93 | CAD/CAM, Data Entry, Electrical Engineering, Electronics, Microcontroller | Sep 20, 2011 | - | ||
| Summary: Manually enter electrical schematics into schematic capture tool Get an account on ... .png 3. Minty Boost A usb battery extender you can use to extend ... adjustable power supply ideal for breadboarding. Schematic : http://www.ladyada.net/make/ ... | Fixed | 14 | $106 | CAD/CAM, Data Entry, Electrical Engineering, Electronics, Microcontroller | Sep 23, 2011 | - | ||
| I would like a small led driver circuit schematic drawn up in altium designer. It should ... off power as it is supplied from a battery and should be fairly efficient. It will ... run off a single cell li ion battery. Please provide component list and values. ... | Fixed | 10 | $66 | Electrical Engineering, Electronics, Engineering, Microcontroller, PCB Layout | Feb 7, 2012 | - | ||
| I am looking for a schematic design (EAGLE format) and working prototype for charging Lithium Ion/Lithium Poly batteries. The batteries are single cell 3.7v batteries 4.2v fully charged. Safety protection IS A MUST in the design. Must comply with the ... | Fixed | 13 | $165 | Electronics, Engineering | Mar 27, 2009 | - | ||
| Hello, I need a guy who can do basic schematic,stimulation and layout design. You should also know how to do DRC & LVS. And theses circuits are very very basic (inverter, gate, flipflop). I will guide you with specification and it is important ... | Fixed | 3 | $53 | Electrical Engineering, Electronics | Nov 11, 2011 | - | ||
| I need help in miniaturizing a circuit schematic that I have (involves ... half dedicated to a miniature circuit (with a microcontroller) and the ... I will pay as the project moves along. In other words ... me finish phases of the project, I will continually pay you ... | Fixed | 8 | $635 | Electrical Engineering, Engineering, Microcontroller, PCB Layout | Apr 28, 2012 | - | ||
| We need an analog signal conversion circuit based on op amps or instrumentation amplifiers. ... of the chosen components to implement the circuit is not critical as this will not ... A PCB layout is not needed. Only the schematic circuit verified with simulation. | Fixed | 13 | $110 | Electrical Engineering, Electronics, PCB Layout | Dec 19, 2011 | - | ||
| ... Picture 1.jpg]. Furthermore voltages of each battery must be monitored once every 10ms ... power sleep mode if variance in battery voltages is within preset parameters. ... 10A Programmable with RS-232 pins Circuit testing and improvements are welcome but ... | Fixed | 0 | Electronics, Engineering | Jul 11, 2009 | - | |||
| ... Picture 1.jpg]. Furthermore voltages of each battery must be monitored once every 10ms ... low power sleep mode if variance in battery voltages is within preset parameters. ... 10A Programmable with RS-232 pins Circuit testing and improvements are welcome but ... | Fixed | 7 | $661 | Electronics, Engineering | Jul 11, 2009 | - | ||
| ... NiMH and NICd batteries packs charge. The battery packs will contain a ... Functionalities: - Charging Ciclyng control - Max charge control based on both voltage ... temperature - Adjustable Cut off circuit - Battery temperature monitor ( to control full ... | Fixed | 29 | $466 | Electrical Engineering, Electronics, Microcontroller, PCB Layout | Aug 17, 2011 | - | ||
| Fixed | Nov 30, 2008 | - | ||||||
| ... within the limitations of a car battery. The circuit is a security unit by nature. ... Alarm light • Transmitter • Receiver The circuit should perform as follows. When the ... I would turn what is probably a simple project for the right person, into a ... | Fixed | 21 | Electronics, Engineering | Jul 15, 2008 | - | |||
| Hello, I need someone who can do basic schematic,stimulation and layout design. THIS IS NOT PCB layout. More like IC layout. Here is the project. http://www.cs.utah.edu/~bchong/VLSI/Resources/Layouts/D%20Flip-Flop%20Design.pdf You should also ... | Fixed | 10 | $174 | Electrical Engineering, Electronics | Nov 12, 2011 | - | ||
| We are looking to develop a SLA battery recharging circuit to be used with our prototypes. Please contact me for further information regarding specific requirements. | Fixed | 20 | $152 | Electrical Engineering, Electronics, Engineering, PCB Layout | Jan 14, 2010 | - | ||
| Fixed | Apr 15, 2009 | - | ||||||
| This project is a simple TI embedded Beagle Bone hardware and software design project. Develope the system requirements for a poly LI-ION battery power cape. Do the circuit design for the cape. Do the PCB design for the cape. Do the Eclipse C row boat ... | Fixed | 2 | $625 | C Programming, Electronics, Embedded Software, PCB Layout | Today | 6d 21h | ||
| ... . http://www.sparkfun.com/products/10751 Schematic: http://spikenzielabs.com/SpikenzieLabs/SolderTime_files/SolderTimeSchem. ... converts power from a 9-volt battery to run 2 white LEDs at ... while only using 13mA on the battery - which is over 90% efficient! ... | Fixed | 21 | $122 | CAD/CAM, Data Entry, Electrical Engineering, Electronics, Microcontroller | Oct 6, 2011 | - | ||
| ... a Tsop40 flash, a 6264 PDIP, a CR2032 Battery, 74ls139 Addressdecoder, custom 16pin Chip easy ... for voltage. I have designed a roughly schematic in Eagle and can provide you ... have to fill in the sram battery backup circuit, fill in the voltagelines and ... | Fixed | 11 | $128 | PCB Layout | Jan 9, 2010 | - | ||
| ... project: I need a transmitter and receiver schematic and parts list. This is a very ... can operate off of DC or AC (battery or 110- wall wart) - Receiver needs to ... - I will need a parts list - Schematic - support to ensure that the circuit does ... | Fixed | 10 | $117 | Electronics, Wireless | Jun 4, 2009 | - | ||
| ... PCB layout already done by your company. If the project can be completed tonight I will be very ... the Op amp pin out Made a low battery circuit, as seen on the bottom left of the schematic. Made a battery connection circuit with a diode Changed the value of ... | Fixed | 1 | $20 | PCB Layout | Mar 13, 2012 | - | ||
| ... components are: Magnetic Reed Switch, Resistor, LED, Battery, Battery Holder. I need that breadboard ... tested and working, turned into a Schematic, and then translated into Gerber files ... receive the files of both the schematic and gerber files produced from ... | Fixed | 20 | $87 | Electrical Engineering, PCB Layout | Dec 7, 2011 | - | ||
| ... but explain to me the motor and the battery with the solar power. waiting for your ... /fwdschematics%20%281%29.zip i posted the project requirement over here http://www.freelancer.com/projects/Electronics-Microcontroller/circuit-designing.html | Fixed | 7 | $8 | Electrical Engineering, Electronics, Embedded Software, Microcontroller | Oct 26, 2011 | - | ||
| Design simple 24v control circuit Need to use automotive parts eg bosch relays ... design, layout and workshop drawings The circuit includes solar, battery bank 6 X 200Ah ... ok to use commerciably available solar charge controllers. Circuit needs to be robust | Fixed | 11 | Electrical Engineering | Jan 9, 2012 | - | |||
| ... Unit with. The engineer would design the circuit and provide a professionally made digital schematic drawing of the circuit along with all the electronics components ... /names/indexes. We will assemble the circuit at our location. The engineer does ... | Fixed | 22 | $390 | Electrical Engineering, Electronics, Engineering | Jan 18, 2012 | - | ||
| Fixed | May 1, 2012 | - | ||||||
| ... 5 volt power supply with a battery charge and supply circuit to ... UPS, without any fancy "on battery" or "supply fail& ... when using a sealed lead acid battery and it must also prevent ... volts @ 1 or 2 amps. Battery is to be connected externally ... | Fixed | 13 | Electronics | May 23, 2008 | - | |||
| Battery switch over & charger circuit diagram Background The device is powered ... main functional components to this project: Battery Switch over: 1) The primary power ... will not lose power. Deliverables: 1) Circuit diagram, can be in eagle cad ... | Fixed | 7 | Electronics, Engineering | Nov 13, 2008 | - | |||
| Fixed | Jun 8, 2011 | - | ||||||
| ... . THE OFFER SHALL INCLUDE DESIGN OF CIRCUIT, PCB LAYOUT INCLUDING HEAT SINK CALCULATIONS ... MPPT CHARGER TO BE MOUNTED IN BATTERY INPUT CIRCUIT AND 2) LED DRIVERS TO ... CHARGER SHALL HAVE ALL PROTECTIONS INCLUDING BATTERY UV/OV, CHARGING CURRENT LIMITING AND ... | Fixed | 2 | $425 | Product Design | Jan 24, 2012 | - | ||
| ... -Filtered-Linear-Power/step2/Schematic/ 2. A Circuit used to measure ... for an automobiles speedometer and tachometer. Schematic : http://www.instructables.com/files/ ... to increase volume going to headphones. Schematic : http://www.instructables.com/files ... | Fixed | 10 | $134 | CAD/CAM, Data Entry, Electrical Engineering, Electronics, Microcontroller | Sep 19, 2011 | - | ||
| Fixed | Oct 2, 2011 | - | ||||||
| ... difficult on the .1mm level. It incorporates a simple rugged battery tube, a 17 point design checklist (safety specifications, mostly ... will be asked to take your design to the final schematic level with all solidworks, g-code, and mold specifications ... | Fixed | 4 | $910 | Industrial Design | May 10, 2012 | 2d 17h | ||
| ... engineer I need the following.. A simple circuit that is described below and kind of ... use your engineering expertise to design the circuit, the information below is just to ... a space that is about 3X2 inches. Battery operated that will last for about ... | Fixed | 7 | $186 | Electronics, Engineering | Sep 19, 2008 | - | ||
| ... the internal resistance of the battery. The electronic circuit has to handle batteries ... is to determinate the condition of the battery based on its internal resistance. ... is highly preferred to develop this circuit using a microcontroller (PIC) of ... | Fixed | 14 | $1211 | Electrical Engineering, Electronics, Engineering, Microcontroller | Jan 25, 2010 | - | ||
| ... the use of two diodes on this circuit board. On the schematic, they are labeled D? and D ... diodes.jpg If you need further reference, the entire circuit is here: http://wepersonalizegifts.com/031510/schematic.pdf What is the purpose of these two ... | Fixed | 28 | Electrical Engineering, Electronics | Mar 15, 2010 | - | |||
| ... electrical engineer to layout and provide a schematic design for a Power Unit similar to ... circuit and provide a digital schematic drawing of the circuit along with the part numbers of all the ... ; so that I may construct the circuit at my location. You DO NOT ... | Fixed | 12 | $212 | Electrical Engineering, Electronics, Engineering Drawing, Microcontroller | Jan 4, 2012 | - | ||
| Project characteristics: We need a battery charger able to charge two serial ... , 17.2 Ah batteries serial connected. Maximum battery current charge: 1.6A (Is desirable ... : 3A Current charger limit: 6A Short circuit protection per output: 10A Minimum ... | Fixed | 11 | $480 | Electronics, Engineering | Aug 25, 2008 | - | ||
| Aim Design and Supply a schematic diagram of an 'Audio Delay' circuit. Criteria The design should use components that are ... should drive an 8ohm 5w speaker. Deliverables A schematic diagram suppied in PDF format. A Bill of ... | Fixed | 8 | $176 | Electrical Engineering, Electronics, Engineering, Manufacturing Design, Mechanical Engineering | Feb 4, 2011 | - | ||
| I have a simple circuit for a power-over-ethernet power ... like the PCB Layout completed for the circuit. It is a simply ... PCB layout based on the attached schematic and BOM. I would also ... components. I am attaching the schematic, Bill Of Materials, and the ... | Fixed | 21 | $492 | PCB Layout | Jun 21, 2011 | - | ||
| ... switch), wich select the voltage to read. This voltage is from a battery, I need to read the voltage via AD converter. This voltage must be read in the web server too. I need the project with PIC or Rabbit RCM4000, the schematic and the source code ... | Fixed | 11 | $198 | C Programming, Electronics, Microcontroller, Remote Sensing | Jan 23, 2012 | - | ||
| ... switch), wich select the voltage to read. This voltage is from a battery, I need to read the voltage via AD converter. This voltage must be read in the web server too. I need the project with PIC or Rabbit RCM4000, the schematic and the source code ... | Fixed | 10 | $420 | C Programming, Electrical Engineering, Electronics, Microcontroller, Remote Sensing | Jan 28, 2012 | - | ||
| ... inches of the water. The circuit must be battery powered by a small over the shelf battery,The unit will be operated ... hour everyday. We would like the battery to last atleast one year. ... will be water proof. I just need the circuit designed and prototyped. ... | Fixed | 32 | $497 | Electronics, PCB Layout | Feb 14, 2010 | - | ||
| ... to build a high quality Super Preamp circuit (op-amp for micrphone), i need to ... SUPER Super Ear op-amp system , the circuit should have transistors, preamp ic . the ... in his mind this things for the circuit design ... 1- sound quality ( no noise ) ... | Fixed | 3 | $155 | Audio Services, Electronics | Apr 20, 2012 | - | ||
| - Manually enter electrical schematics into schematic capture tool Get an account on ... place. 3. Minty Boost A usb battery extender you can use to extend ... adjustable power supply ideal for breadboarding. Schematic : http://www.ladyada.net/make/bbpsup ... | Fixed | 8 | $115 | CAD/CAM, Data Entry, Electrical Engineering, Electronics, Microcontroller | Sep 20, 2011 | - | ||
| Fixed | Jan 19, 2012 | - | ||||||
| Fixed | Jan 26, 2009 | - | ||||||
| ... and electronic circuit projects using basic components (resistors, capacitors, transistors, battery, etc). ... electrical engineer to assist in developing project content for the product. The ... new concepts. For example, an early project might be to wire an ... | Fixed | 77 | $358 | Electrical Engineering, Electronics | Oct 21, 2010 | - |
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