Difference between revisions of "NodeMCU v2"

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[[Category:Projects]]
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[[Category:Michael's Projects]]
  
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ESP8266 development board for wifi
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{{Project
 +
|name=NodeMCU v2
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|primary=[[User:Msemtd|Michael Erskine]]
 +
|created=03/03/2016
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|status=In Progress
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|type=member
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}}
  
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So I sent off to China for a NodeMCU board (for about £3) thinking that it might be fun to have something that talks over wifi, then forgot all about it. When it arrived in the post yesterday I wondered how I use it! I plugged it into a Windows 7 development PC with the micro USB and Windows went off and installed the CP2102 UART bridge driver. So then it presented itself as a serial port in the Windows Device Manager. I pointed a terminal at it (the free and relatively open Teraterm Pro) and after some faffing worked out it wanted a 115k baudrate. A little web searching revealed that it is expecting AT commands and there's a magic command "AT+GMR" - Cool!
+
ESP8266 development board for wifi --[[User:Msemtd|Michael Erskine]] ([[User talk:Msemtd|talk]]) 13:39, 3 March 2016 (UTC)
  
 +
So I sent off to China for a NodeMCU board (for £3.55 from http://www.ebay.co.uk/itm/291505733201 at time of writing) thinking that it might be fun to have something that talks over wifi, then forgot all about it. When it arrived in the post yesterday I wondered how I use it! I plugged it into a Windows 7 development PC with the micro USB and Windows went off and installed the CP2102 UART bridge driver. So then it presented itself as a serial port in the Windows Device Manager. I pointed a terminal at it (the free and relatively open Teraterm Pro) and after some faffing worked out it wanted a 115k baudrate. A little web searching revealed that it is expecting AT commands and there's a magic command "AT+GMR" - Cool!
 +
 +
    AT+GMR
 +
    AT version:0.40.0.0(Aug  8 2015 14:45:58)
 +
    SDK version:1.3.0
 +
    Ai-Thinker Technology Co.,Ltd.
 +
    Build:1.3.0.2 Sep 11 2015 11:48:04
 +
    OK
 +
 +
But how do I load a LUA script onto it? The NodeMCU website says nowt, so a bit of web searching and it seems that Arduino IDE can be used - very cool!
 +
 +
* http://esp8266.github.io/Arduino/versions/2.1.0/doc/installing.html
 +
 +
The Boards Manager within recent Arduino releases takes care of the installation of toolchains and whatever magic that Arduino needs. It downloaded a metric shedload of stuff (153,527kb of who-knows-what!) and then...
 +
 +
* http://nodemcu.readthedocs.org/en/dev/en/
 +
 +
    AT+RST
 +
    OK
 +
    ets Jan  8 2013,rst cause:2, boot mode:(3,6)
 +
    load 0x40100000, len 1396, room 16
 +
    tail 4
 +
    chksum 0x89
 +
    load 0x3ffe8000, len 776, room 4
 +
    tail 4
 +
    chksum 0xe8
 +
    load 0x3ffe8308, len 540, room 4
 +
    tail 8
 +
    chksum 0xc0
 +
    csum 0xc0
 +
 +
    2nd boot version : 1.4(b1)
 +
      SPI Speed      : 40MHz
 +
      SPI Mode      : DIO
 +
      SPI Flash Size & Map: 8Mbit(512KB+512KB)
 +
    jump to run user1 @ 1000
 +
 +
    n't use rtc mem data
 +
    rl?�?n�dÿ
 +
    Ai-Thinker Technology Co.,Ltd.
 +
 +
    ready
 +
    WIFI DISCONNECT
 
     AT+GMR
 
     AT+GMR
 +
 
     AT version:0.40.0.0(Aug  8 2015 14:45:58)
 
     AT version:0.40.0.0(Aug  8 2015 14:45:58)
 
     SDK version:1.3.0
 
     SDK version:1.3.0
Line 11: Line 63:
 
     OK
 
     OK
  
−
But how do I load a LUA script onto it? The NodeMCU website says nowt, so a bit of web searching and it seems that Arduino IDE can be used - very cool! The Boards Manager within recent Arduino releases takes care of the installation of toolchains and whatever magic that Arduino needs. It downloaded a metric shedload of stuff (153,527kb of who-knows-what!) and then...
+
So in trying to use ESPlorer to send LUA command line commands I just get lots of errors but the AT commands work fine. So I'm thinking that a firmware update might save it. Not knowing what I actually have bought is a bit of a problem! There some comparisons here:
 +
http://frightanic.com/iot/comparison-of-esp8266-nodemcu-development-boards/
 +
 
 +
    2nd generation / v1.0 / V2
 +
    The V2 fixes the short comings of the initial board, it’s more narrow and fits nicely into bread boards. The chip was upgraded from a ESP-12 to a ESP-12E.
  
  
−
http://nodemcu.readthedocs.org/en/dev/en/
 
  
 
== Links ==
 
== Links ==
Line 21: Line 76:
 
* https://www.coolcomponents.co.uk/nodemcu-v2-lua-based-esp8266-development-kit.html
 
* https://www.coolcomponents.co.uk/nodemcu-v2-lua-based-esp8266-development-kit.html
 
* http://www.seeedstudio.com/recipe/index.php?controller=recipe&action=show&recipe_id=232&ref=product
 
* http://www.seeedstudio.com/recipe/index.php?controller=recipe&action=show&recipe_id=232&ref=product
 +
 +
= First Jiffy Programs =
 +
 +
Using the Arduino core: -
 +
* Using Arduino 1.6.5, I added support for the nodemcu with the Boards Manager...
 +
<gallery>
 +
File:Nodemcu-ard-boardsman.png
 +
</gallery>
 +
* documentation for the ESP8266 Arduino Core is at...
 +
** http://esp8266.github.io/Arduino/versions/2.0.0/
 +
* Not 100% sure how many digital IO pins I can use - they seem to clash with all sorts of peripherals:
 +
** see http://esp8266.github.io/Arduino/versions/2.0.0/doc/reference.html#digital-io
 +
** pragmatic approach is suck-it-and-see!
 +
 +
== First Project: Status Boards ==
 +
 +
* Project [[Status_Boards]]
 +
* See my GitHub project at https://github.com/msemtd/nodemcu-statusboard
 +
* NodeJS server dishing up the info
 +
* in theory this allows scaling to any number of feeds and boards
 +
 +
== Second Project: WiFi-enabled Banjo ==
 +
 +
* Toby's LED banjo needs to host its own webserver, and perhaps its own WiFi hotspot
 +
** project page here: [[WiFi-enabled Banjo]]
 +
** We are riding the ESP8266 [https://en.wikipedia.org/wiki/Hype_cycle Hype-Cycle] until the wheels fall off!
 +
** ESP8266 Captive Portal https://www.hackster.io/rayburne/esp8266-captive-portal-5798ff
 +
Possible uses for said WiFi hotspot...
 +
 +
* Change colour of lights.
 +
* Provide a link to our soundclound page.
 +
* Piratebox
 +
* Livestreaming from a microphone or small camera located inside banjo. Or pointed at the audience.
 +
* Rickrolling
 +
* Something that fucks with the people at Makerfaire in some way.
 +
* Tiny smoke machine

Latest revision as of 15:56, 5 February 2019


NodeMCU v2
[[{{{image}}}|border|frameless|220px|center]]
Primary Contact Michael Erskine
Created 03/03/2016
Completed {{{completeddate}}}
Dormant {{{dormantdate}}}
Version {{{version}}}
Members {{{members}}}
Manufacturer {{{manufacturer}}}
Model {{{model}}}
Location [[{{{location}}}]]
GitHub / Repo {{{repo}}}
Status In Progress
Type Members Project
Live Status {{{livestatus}}}
QR code

ESP8266 development board for wifi --Michael Erskine (talk) 13:39, 3 March 2016 (UTC)

So I sent off to China for a NodeMCU board (for £3.55 from http://www.ebay.co.uk/itm/291505733201 at time of writing) thinking that it might be fun to have something that talks over wifi, then forgot all about it. When it arrived in the post yesterday I wondered how I use it! I plugged it into a Windows 7 development PC with the micro USB and Windows went off and installed the CP2102 UART bridge driver. So then it presented itself as a serial port in the Windows Device Manager. I pointed a terminal at it (the free and relatively open Teraterm Pro) and after some faffing worked out it wanted a 115k baudrate. A little web searching revealed that it is expecting AT commands and there's a magic command "AT+GMR" - Cool! 

   AT+GMR
   AT version:0.40.0.0(Aug  8 2015 14:45:58)
   SDK version:1.3.0
   Ai-Thinker Technology Co.,Ltd.
   Build:1.3.0.2 Sep 11 2015 11:48:04
   OK

But how do I load a LUA script onto it? The NodeMCU website says nowt, so a bit of web searching and it seems that Arduino IDE can be used - very cool!

The Boards Manager within recent Arduino releases takes care of the installation of toolchains and whatever magic that Arduino needs. It downloaded a metric shedload of stuff (153,527kb of who-knows-what!) and then... 

   AT+RST
   OK
    ets Jan  8 2013,rst cause:2, boot mode:(3,6)
   load 0x40100000, len 1396, room 16 
   tail 4
   chksum 0x89
   load 0x3ffe8000, len 776, room 4 
   tail 4
   chksum 0xe8
   load 0x3ffe8308, len 540, room 4 
   tail 8
   chksum 0xc0
   csum 0xc0

   2nd boot version : 1.4(b1)
     SPI Speed      : 40MHz
     SPI Mode       : DIO
     SPI Flash Size & Map: 8Mbit(512KB+512KB)
   jump to run user1 @ 1000

   n't use rtc mem data
   rl?�?n�dÿ
   Ai-Thinker Technology Co.,Ltd.

   ready
   WIFI DISCONNECT
   AT+GMR

   AT version:0.40.0.0(Aug  8 2015 14:45:58)
   SDK version:1.3.0
   Ai-Thinker Technology Co.,Ltd.
   Build:1.3.0.2 Sep 11 2015 11:48:04
   OK

So in trying to use ESPlorer to send LUA command line commands I just get lots of errors but the AT commands work fine. So I'm thinking that a firmware update might save it. Not knowing what I actually have bought is a bit of a problem! There some comparisons here: http://frightanic.com/iot/comparison-of-esp8266-nodemcu-development-boards/ 

   2nd generation / v1.0 / V2
   The V2 fixes the short comings of the initial board, it’s more narrow and fits nicely into bread boards. The chip was upgraded from a ESP-12 to a ESP-12E.


Links

First Jiffy Programs

Using the Arduino core: -

  • Using Arduino 1.6.5, I added support for the nodemcu with the Boards Manager...
  • Nodemcu-ard-boardsman.png

First Project: Status Boards

Second Project: WiFi-enabled Banjo

Possible uses for said WiFi hotspot...

  • Change colour of lights.
  • Provide a link to our soundclound page.
  • Piratebox
  • Livestreaming from a microphone or small camera located inside banjo. Or pointed at the audience.
  • Rickrolling
  • Something that fucks with the people at Makerfaire in some way.
  • Tiny smoke machine
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