├── README.md
└── OpenWiFiDetector.ino


/README.md:
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 1 | MASLOW: an Open WiFi Detector with ESP8266
 2 | =======
 3 | 
 4 | by Andres Sabas
 5 | The Inventor's House Hackerspace
 6 | 19 sept 2015
 7 | 
 8 | ###Material
 9 | - NodeMCU V1.0 or ESP8266 v2 or HUZZAH Adafruit o ESP8266 version 12 or 07
10 | - Lipo Battery 3.7v
11 | - Lipoly NodeMCU Backpack The Inventor's House
12 | 
13 | Based in Adafruit work https://learn.adafruit.com/wifi-hotspot-finder-adafruit-pro-trinket-cc3000g
14 | 


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/OpenWiFiDetector.ino:
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 1 | /*
 2 |  *MASLOW: an Open WiFi Detector with ESP8266 
 3 |  *based in Adafruit https://learn.adafruit.com/wifi-hotspot-finder-adafruit-pro-trinket-cc3000
 4 |  * by Andres Sabas
 5 |  * The Inventor's House Hackerspace
 6 |  * 19 sept 2015
 7 |  */
 8 |  
 9 | #include "ESP8266WiFi.h"
10 | 
11 | // Time to sleep (in seconds):
12 | const int sleepTimeS = 30;
13 | 
14 | void setup() {
15 |   Serial.begin(115200);
16 | 
17 |   // Set WiFi to station mode and disconnect from an AP if it was previously connected
18 |   WiFi.mode(WIFI_STA);
19 |   WiFi.disconnect();
20 |   delay(100);
21 |   pinMode(4, OUTPUT);
22 |   Serial.println("Setup done");
23 | 
24 | }
25 |   
26 | void loop() {
27 |   uint8_t sec;
28 |   
29 |   analogWrite(4, 10);
30 | 
31 |   Serial.print(F("Scanning..."));
32 |   int n = WiFi.scanNetworks(); // WiFi.scanNetworks will return the number of networks found
33 |   Serial.println(F("scan done"));
34 |   if (n == 0)
35 |     Serial.println(F("no networks found"));
36 |   else
37 |   {
38 |     Serial.print(n); Serial.print(F(" network"));
39 |       if(n > 1) Serial.print('s');
40 |       Serial.println(F(" found:"));
41 |     for (int i = 0; i < n; ++i)
42 |     {
43 |       int sec = WiFi.encryptionType(i);
44 |       
45 |         // Print SSID and RSSI for each network found
46 |         Serial.print(i + 1);
47 |         Serial.print(": ");
48 |         Serial.print(WiFi.SSID(i));
49 |         Serial.print(" (");
50 |         Serial.print(WiFi.RSSI(i));
51 |         Serial.print(")");
52 |         Serial.println(sec);
53 |         delay(10);
54 | 
55 |         if((sec == ENC_TYPE_NONE || sec == ENC_TYPE_WEP) && (WiFi.RSSI(i) > -95)) { // If open network and good signal...
56 |             // Switch LED to conspicuous 'open networks' flash immediately
57 |             analogWrite(4, 1023); // 1 sec
58 |             delay(1000);
59 |             // "Open hotspot" is as good as the indicator gets and the scan
60 |             // can stop now, get into power-saving sleep mode ASAP.
61 |             // If you're using the Serial console and want to see all
62 |             // networks displayed, comment out this line:
63 |             //Serial.println("Not security");
64 |             //Mode Sleep for ESP8266 Version 12 or model with pin16 avaible
65 |             //Necesary jump RST and GPIO16
66 |             
67 |             sleep_now(); // Function Sleep 30 seconds
68 |         }
69 |     }
70 |   }
71 | 
72 | }
73 | 
74 | //Mode Sleep for ESP8266 Version 12 or model with pin16 avaible
75 | 
76 | void sleep_now(){
77 |  
78 |   Serial.print(F("Sleeping..."));
79 |   // deepSleep time is defined in microseconds. Multiply
80 |   // seconds by 1e6 
81 |   ESP.deepSleep(sleepTimeS * 1000000);
82 | }
83 | 
84 | 


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