Serial WiFi module


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  1. #4
    Join Date
    Oct 2009
    Location
    Utah, USA
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    427

    Default Re: Serial WiFi module

    Hi Art,

    These esp8266 modules are NOT 5V tolerant! you must use 3.3v

    I highly recommend one of these... (also available on Tindie) as it makes it much easier to program and has a breadboard friendly header strip to access the pins of the module. Has a spot for the module to plug into it, a 3.3v regulator on board, reset button and jumpers to put it into flash mode, etc

    http://www.ebay.com/itm/CP2102-USB-T...QAAOSwBahVAS39

    Since the pin spacing does not fit a typical breadboard you may need to buy or build one of these...

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    I've seen some of your prototyping work so should be no problem for you :-)


    There are several ways to go as far as programming, first you can choose to use the native OS that comes with them which responds to old school modem like commands that begin with "AT"

    or you can load a different OS, for example one that is very popular is NODEMCU and then program in a language called LUA

    or you could try the BASIC (I have not)

    I have mostly had success with the LUA but I am terrible at anything other than BASIC so it has been a real struggle.

    there is a pretty nice tool called ESPLORER...
    http://esp8266.ru/esplorer/

    to load the NODEMCU OS I have used esp8266flasher.exe
    which allows you to flash a different OS like NODEMCU

    these little modules are amazing!! some have shown using them at a range of >1000 ft in ideal conditions.

    using the LUA language I have been able to read a ds18b20 temp sensor connected directly to the module (with pull up resistor) and generate an email sent directly from the module via my email provider

    Lots of possibilities, not enough time (or knowledge)

    good luck
    Last edited by Heckler; - 13th November 2015 at 06:30.
    Dwight
    These PIC's are like intricate puzzles just waiting for one to discover their secrets and MASTER their capabilities.

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