Difference between revisions of "ESP-2"

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m (moved ESP8266 to ESP^2: ESP information will become more extensive, so moving the egg salad programmer to its own page)
(moved most of the information to ESP8266 so removing it here)
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[[Image:Runprogrun.JPG|335px|thumb|Behold, the ESP^2 (esp egg salad programmer).]]
 
[[Image:Runprogrun.JPG|335px|thumb|Behold, the ESP^2 (esp egg salad programmer).]]
  
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=== Revision 1.1 ===
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== Revision 1.1 ==
 
[[User:Xopr|xopr]] Modified the ESP^2 a bit:
 
[[User:Xopr|xopr]] Modified the ESP^2 a bit:
 
* Added three wires (VCC, GND and GPIO2) for Dallas temperature sensor debugging (wire ends are insulated)
 
* Added three wires (VCC, GND and GPIO2) for Dallas temperature sensor debugging (wire ends are insulated)
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* Added resistor to the 5V ESP^2 TX signal (should be two diodes I guess, the resistor divider didn't work)
 
* Added resistor to the 5V ESP^2 TX signal (should be two diodes I guess, the resistor divider didn't work)
  
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== Using Arduino 1.6.4 to program the ESP8266 ==
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== Todo ==
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Taken from https://github.com/esp8266/arduino
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Find a way to program the ESP-12 (2mm pitch) modules without much hassle (note that it needs a 10k resistor between GPIO15 and GND) to boot correctly
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* Install Arduino 1.6.4 from the [http://www.arduino.cc/en/main/software Arduino website].
 
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* Start Arduino and open Perferences window.
 
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* Enter ''http://arduino.esp8266.com/package_esp8266com_index.json'' into Additional Board Manager URLs field. You can add multiple URLs, separating them with commas.
 
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* Open Boards Manager from Tools > Board menu and install ESP8266 platform (and don't forget to select your ESP8266 board from Tools > Board menu after installation).
 
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* For the ESP^2, the device name (under Linux) is /dev/ttyACM3
 
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* Change the programmer from ''AVRISP mkII'' to ''ArduinoISP''
 
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* poweroff ESP (either unplug the USB or pull the device from the socket
 
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* set the switch to ''prog''
 
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* poweron the ESP
 
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* You can now upload your sketch
 
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=== Webserver serving JSON ===
 
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This sketch provides a webserver-like interface and provides a json file (somewhat compatible with [[SpaceAPI]])
 
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There is a version running in the space in a 'hot' zone, and accessible on [http://192.168.1.132 http://192.168.1.132]
 
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You can find the code [[ESP8266-DS18S20|here]]
 
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=== SpaceAPI ===
 
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The new [[SpaceAPI]] is a combination of some PHP, MySQL, and some ESP modules updating the space state and sensor data.
 
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The ESP sketch sketch will have several features like space state switch, indicator, Dallas temperature and other sensors, which can be enabled compile-time.
 
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=== SpaceState ===
 
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This sketch is a web client and will update the SpaceState
 
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You can find the code [[ESP8266-SpaceState|here]]
 
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== loading scripts from a webserver  ==
 
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I ([[User:Da Syntax|Da Syntax]]) got tired from typing the scripts line for line into the lua console of the nodeMCU firmware. I wrote a little function to load the scripts from a webserver running on my laptop. This way I can just save the script on my laptop and load it to my ESP8266 calling 2 functions ( netload() and dofile("netloaded.lua") )  
 
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<pre>function netload()
 
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conn=net.createConnection(net.TCP, 0)
 
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conn:on("receive", function(conn, payload)
 
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print(payload)
 
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file.open("netloaded.lua", "w")
 
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file.write(payload)
 
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file.close()
 
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end)
 
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conn:connect(8080,"192.168.1.193")
 
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conn:send("GET /test.lua HTTP/1.1\r\nHost: www.example.com\r\n"        .."Connection: keep-alive\r\nAccept: */*\r\n\r\n")
 
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end
 
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</pre>
 
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=== Future plans ===
 
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*Send mac address of the wifi module in get so the web server can return device specific firmwares
 
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*Put the script between specific tags so there won't be any problems with headers that are added by the web server + gives the possibility to add meta data (e.g. version of script or a signature)
 
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*Create a nice php/mysql webapp to easily manage the scripts per module
 

Revision as of 20:01, 23 July 2015

Featured article
ESP-2 had been flagged as a featured article and will automatically appear on the Main Page.
Project: ESP-2
Featured:
State Active
Members Prodigity, Da Syntax, xopr
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Description Playing around with cheap wifi modules
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synopsis

To make the ESP8266 more accessible to everyone I have created a "programmer" which allows for easy firmware uploading and communication with the module.

Behold, the ESP^2 (esp egg salad programmer).

Revision 1.1

xopr Modified the ESP^2 a bit:

  • Added three wires (VCC, GND and GPIO2) for Dallas temperature sensor debugging (wire ends are insulated)
  • Added pullup resistor was added so GPIO0 can be used after the device has been booted
  • Added resistor to the 5V ESP^2 TX signal (should be two diodes I guess, the resistor divider didn't work)

Todo

Find a way to program the ESP-12 (2mm pitch) modules without much hassle (note that it needs a 10k resistor between GPIO15 and GND) to boot correctly

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