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Recent content by zejulios

  1. Z

    External/Battery switch

    There are some devices from linear that does all of this. Has anyone used them? Any alternatives?
  2. Z

    External/Battery switch

    Hello, Thanks for your replays, I was expecting some part numbers, like thylacine1975. I did not mention what parts did I choose so anyone can point me others, or to know if I'm on right path. The microchip thylacine told was exacly what I'm thinking of, so maybe I'm on right track :). Thanks!
  3. Z

    External/Battery switch

    Hello, I have a new project that I need to work with external supply and battery when external supply is not used. I'm thinking of a 5V external adapter, that will charge a 3,7V Lion battery, and my circuit should run at 3V3. I need to detect when my system is on battery, and also charge the...
  4. Z

    Wifi and Ethernet module

    This can be on option. It only lacks the same pinout on both, needing to have 2 footprints on my board. I'll take a closer look, thanks!
  5. Z

    Wifi and Ethernet module

    I'm currently working with the MRF24WB0 from microchip (STACK on microcontroller) and I have a 15-20€ budget for that. I can reach 50€ for an embedded solution that share the same pinout/firmware on Wifi or Ethernet.
  6. Z

    Wifi and Ethernet module

    Digi Connect is what I'm looking for, it has Wifi and cable in the same form/pinout, but they are too expensive, the cost around 90% of my budget for my product :(...
  7. Z

    Wifi and Ethernet module

    And what about the same for ethernet cable? Tjamls-
  8. Z

    Wifi and Ethernet module

    I'm using microchip PIC18F family controllers. I'm looking for Wifi and cable modules with TCP/IP stack builtin, so I can free my microcontroller resources. I'm looking for a device that handles HTTP requests, and I only need to configure, ip/dhcp and access point and the module deal with the...
  9. Z

    Wifi and Ethernet module

    Hello, In my project I have to use ethernet network, either by ethernet cable, or Wifi. I'll use HTTP client, since my board will access a webpage. I need two modules (one with ethernet, other with wifi) that uses the same firmware, and comunicate with my micro (UART/SPI/I2C), so I can easly...
  10. Z

    Android OEM/Open Frame device

    Hello, I'm working on a project that I need an Android "tablet" style, but with open frame/OEM tablet, since I want to make my own box for it. I'm looking for something like this "http://www.garz-fricke.com/santaro-104-openframe_en.html". Do you know any alternatives? Usually it's cheaper to...
  11. Z

    10" Tablet Car Charger Circuit

    Hello, What is the main difference from LM2576 and LM2596, besides the frequency... Which is the best? Thanks.
  12. Z

    10" Tablet Car Charger Circuit

    @ZASto Thanks for the tip. @ard My project connects to the tablet, using a micro controller so I need D+ and D- free. I'll use microchip accessory firmware.
  13. Z

    10" Tablet Car Charger Circuit

    Hello, I'm developing a system with a Tablet. The system will run on a car (12V), and I need to charge the tablet from my circuit. I think I'll need about 2A for a 10" tablet charger, does anyone have a small/cheap design so I can convert 10-18V of the car to 5V 2A? I've found out a cheap...

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