datasith / ai_tips_esp8266

Code from my "ESP8266 Tips & Tricks" tutorial series on YouTube

Yo, I'm Cisco @datasith

• I am a Data Scientist • My background is a mix of electrical engineering, robotics, and computer vision • My current interest lie on architecting computer vision solutions for geospatial applications • I (used to) run a YouTube channel to teach *anyone* about DIY Electronics and Data Science • When I'm not coding (if ever), I enjoy running 🏃 snowboarding 🏂 boxing 🥊 and watching/playing fútbol ⚽

Projects

🤖 Studying Robot-Fly Visual Interactions Together with @peterpolidoro, we built a real-time, vision-based controlled, XY-stage to move a magnet within a chamber to study visually mediated responses of walking fruit flies. Publications: Zabala et al., "A simple strategy for detecting moving objects", Current Biology (Cell Press), 2012.
🦟 Tracking Insect Wings and Body Kinematics I built a 3D, high-speed video, auto-capture rig to observe visually mediated responses of fruit flies. The responses were elicited by a self-triggered LED chamber surrounding the flight volume. Publications: Zabala et al., "Wing and body motion during flight", Journal of Exp. Bio., 2009.
🏎️ Team Caltech - DARPA Urban Challenge Together with fellow students, post-docs, and professors, we built an autonomous ground vehicle capable of maneuvering a 60 mile course in a mock urban environment in under 6 hours. Publications: Burdick et al., "Sensing, navigation and reasoning", DARPA Technical Report, 2007. Articles: Zabala, F. "How to fall in love with CV", Medium, 2022 (last accessed).

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ai_tips_esp8266's Issues

How to pass values from scripts to arduino sketch?

Web API access

Hello!
I try to make the Web API access example from your YouTube Video with the esp8266.
https://www.youtube.com/watch?v=8xqgdXvn3yw&t=607s
Want to modify it to work with my OpenWeatherMap account.
Maybe you can help me with this. Thanks in Advance!
Andreas
Code is attached …. also the Json Output of the OWM

/*------------------------------------------------------------------------------
  11/01/2016
  Author: Makerbro
  Platforms: ESP8266
  Language: C++/Arduino
  File: simple_client.ino
  ------------------------------------------------------------------------------
  Description: 
  Code for YouTube video demonstrating how to run a web client on the ESP8266 to
  get Weather Data from the Weather Underground API:
  https://youtu.be/Edbxyl2BhyU
  
  Do you like my videos? You can support the channel:
  https://patreon.com/acrobotic
  https://paypal.me/acrobotic
  ------------------------------------------------------------------------------
  Please consider buying products from ACROBOTIC to help fund future
  Open-Source projects like this! We'll always put our best effort in every
  project, and release all our design files and code for you to use. 

  https://acrobotic.com/
  https://amazon.com/acrobotic
  ------------------------------------------------------------------------------
  License:
  Please see attached LICENSE.txt file for details.
------------------------------------------------------------------------------*/
#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <ArduinoJson.h>

ESP8266WebServer server;
uint8_t pin_led = 16;
char* ssid = "WLAN-MYWLAN";
char* password = "MYPSWD_ABRACADABRA";

#define WU_API_KEY "MY_OPENWEATHERMAP_APIKEY"
#define WU_LOCATION "2916936"   **_// CITY ID CODE_OF MY CITY IN **GERMANY****
#define WU_URL "api.openweathermap.org"

static char respBuffer[4096];

void setup()
{
  pinMode(pin_led, OUTPUT);
  WiFi.begin(ssid,password);
  Serial.begin(115200);
  while(WiFi.status()!=WL_CONNECTED)
  {
    Serial.print(".");
    delay(500);
  }
  Serial.println("");
  Serial.print("IP Address: ");
  Serial.println(WiFi.localIP());

  server.on("/",[](){server.send(200,"text/plain","Hello simple client!");});
  server.on("/getdata",getData);
  server.begin();
}

void loop()
{
  server.handleClient();
}

WiFiClient client;

void getData()
{
  const char request[] = 
** I THINK HERE IS THE PROBLEM WITH THE WORKING WITH THE :JSON RESPOND FROM THE OWM SERVER **
    "GET /data/2.5/weather?id=" WU_LOCATION "&appid=" WU_API_KEY " HTTP/1.1\r\n"  
    "User-Agent: ESP8266/0.1\r\n"
    "Accept: */*\r\n"
    "Host: " WU_URL "\r\n"
    "Connection: close\r\n"
    "\r\n";
  Serial.println(request);
  client.connect(WU_URL, 80);
  client.print(request);
  client.flush();
  delay(1000);

  uint16_t index = 0;
  while(client.connected())
  {
    if(client.available())
    {
      respBuffer[index++] = client.read();
      delay(1);
    }
  }
  client.stop();
  char * json = strchr(respBuffer,'{');

  DynamicJsonBuffer jBuffer;
  JsonObject& root = jBuffer.parseObject(json);
  JsonObject& current = root["weather"];
  String weather = current["description"];
  JsonObject& current = root["main"];
  String temp_c = current["temp"];
  String msg = "Temp(C): "+(temp_c -273,15)+", Weather: "+weather;
  server.send(200,"text/plain", msg);
}

JSON RESPOND FROM OWM SERVER:

{
  "indent_size": "4",
  "indent_char": " ",
  "max_preserve_newlines": "5",
  "preserve_newlines": true,
  "keep_array_indentation": false,
  "break_chained_methods": false,
  "indent_scripts": "normal",
  "brace_style": "collapse",
  "space_before_conditional": true,
  "unescape_strings": false,
  "jslint_happy": false,
  "end_with_newline": false,
  "wrap_line_length": "0",
  "indent_inner_html": false,
  "comma_first": false,
  "e4x": false,
  "indent_empty_lines": false
}

No Nodemcu .bin file in since 1.4 release

So I'm going through the tutorial since the video skips way ahead of someone who is starting out.

One of the steps for Flashing the firmware to the ESP8266 python esptool.py --port /dev/tty.SLAB_USBtoUART write_flash 0x00000 ~/Downloads/nodemcu_float_0.9.6-dev_20150704.bin

Problem is the, there is no .bin file in the latest release

However in the example in the tutorial:

You can see there is a .bin file available.