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Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
We are looking to establish a working relationship with a PCB designer that can work for us as a freelancer. This posting is for a simple design to evaluate the candidates. We are asking for a simple two layer board with a network of resistors and capacitors. More information will be provided. Altium knowledge and proficiency is required.
Skills: Electronic Design Altium Designer PCB Design
Fixed-Price - Intermediate ($$) - Est. Budget: $1,000 - Posted
I wish to create a custom board which I will have manufactured which will do the following. 1) Bluetooth 2) Wifi 3) Camera 4) Amplifier and 3 watt Speaker I wish to put these capabilities in to an item. I need the main board to step down from an an incoming 110 power source and I need the board to be no more than 1 inch wide by 2 inches long. I basically want a board which will accomplish the following. Hook up to the bluetooth of a cell phone (iphone or android) and stream music to the speaker. I need the wifi to be able to remotely turn off the item through an app that a programmer will design I need the camera to be able to take pictures and send them through wifi or bluetooth (the app will handle those as well).
Skills: Electronic Design Circuit Design Electrical Drawing Electronics
Fixed-Price - Entry Level ($) - Est. Budget: $50 - Posted
I am looking for someone who would modify the schematics and PCB layout in the following reference design http://bit.do/bSGXR . The idea is to add external EEPROM/flash memory to the MCU, so you need to update the provided Altium schematics and PCB layout. You should be careful to leave some pins on the part in a defined state so the memory stays enabled and ready to communicate. You must guarantee that the solution will work for sure, so MCU will be able to communicate via SPI with external memory. I am opened for suggestions about which memory to choose, but I believe that S25FL256SAGNFI001 or N25Q256A13EF840E should be a good choice.
Skills: Electronic Design Circuit Design Electronics PCB Design
Fixed-Price - Entry Level ($) - Est. Budget: $150 - Posted
I am looking for someone who would modify the firmware for TI CC2541 in the following reference design http://bit.do/bSGXR . The current provided firmware is sending ECG readings from ADS1293 in real-time via Bluetooth to a dedicated app on a phone. I would like to have it modified in a way to also store ECG readings to external EEPROM flash memory via SPI for at least 24 hours straight and send all the data on-demand to a mobile device via Bluetooth. There are no official TI specific examples with CC254x and SPI flash, but you may see how the SPI driver is utilized in the CC2541 KeyFob reference design http://www.ti.com/tool/CC2541DK-MINI . You would need to write your own functional driver such that you could read/write to the external memory device. You can also refer to CC2541 user guide http://www.ti.com/lit/ug/swru191f/swru191f.pdf for SPI interface. SimpleBLEPeripheral example use the following SPI pins (P1.5 - CLK, P1.6 - MOSI, P1.7 - MISO) to do LCD driver so you can refer to it for implementation SPI driver. You can also refer to HalOTARead and HalOTAWrite in hal_ota.c which is implemented in Z-Stack http://www.ti.com/tool/Z-Stack . It uses SPI interface to control external flash/EEPROM. It is a bonus (but not necessary) if you are also able to modify provided Altium project (check design files in the reference design), so by adding external EEPROM flash device into the schematics and PCB layout. If you have any better ideas for different approaches to the project, then I am also open to suggestions.
Skills: Electronic Design Electronics Embedded Systems Microcontroller Programming
Fixed-Price - Expert ($$$) - Est. Budget: $1,000 - Posted
We need a PCB designed to communicate between an object and a mobile app GSM/GPRS battery to charge mobile phones altimeter GPS
Skills: Electronic Design
Hourly - Intermediate ($$) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Hello applicants, Our Product is almost complete. My engineer left due to illness toward the last leg of the project. Now I need someone that can pick up where my engineer left off. I have the gerber files and all the info that i will share with the applicant. Scope of the work: Battery Controller : New Design, Scope includes Schematics design, PCB design and Gerber package generation. DC to Ac Inverter Board : Design review and change. Package Generation. Inverter do not support grid charging and do not support Online/offline interactive functions with Grid. The output cannot be connected to the grid in any way and loads needs to be seperate wiring. It is possible to design line interactive Inverters or grid charging type. Control Unit : Schematics changes, PCB design. Programming/software development. Other boards such as Inverter, DC-DC push pull converter need signals from this board. As all control functions implemented in software for all boards are from MCU located in this board. DC-DC Push pull converter : Review of design, design changes, package generation. . AC-DC converter from Grid : New design to be made. Enough power to support charging of battery. Solar DC-DC regulator : For DC bus, 100W panel. Product Configuration Suppose to be two: 128 Wh storage (3.7 v 10 ah) 3 output for LED light bulbs Usb phone charging port Includes battery, 100 watt panel inverter and grid charging connection 256 Wh storage (3.7 v 20 ah) 3 output for LED light bulbs Use charge port Output plug for laptop charging of small tv input Includes 250w panel battery and inverter also with grid charging It a very small unit that works with IoT Platform via M2M chip. We need the finished up within 1-1.5 week. Please submit your cover letter and lets start talking..
Skills: Analog Electronics Computer Engineering Electrical Drawing Electrical engineering
Fixed Price Budget - Intermediate ($$) - $50 to $100 - Posted
I have an idea that i need a schematic or either a resolution for. Id like to add a countdown clock that starts at 30:00 minutes when a mechanical lift is started and buzzes when it reaches 00:00. In other words when I lift a vehicle up in the air with my mechanical lift - as soon as I press the button to lift it in the air - I'd like the countdown clock to start and countdown from 30:00. I currently have the lift in place and I can have an electrician wire it up.
Skills: Digital Electronics Electrical Drawing Electrical engineering Electronic Design