This instrucatables show how to make an ESP8266 version WiFi Analyzer clone.
Step 1: What Is WiFi Analyzer?
WiFi Analyzer is a handy app in Android, it help to visualize the WiFi signal information around you. It is very useful for helping select a right channel for setting a new AP. If you selected a channel that as same as another AP near you, you may encounter interference and degrade the network performance.
However, you may not have a Android phone in hand and it is a little bit overkill dedicate an Android phone for WiFi scanning. ESP8266 is good enough for scanning WiFi signal, let's make this handy tools together!
Step 2: Preparation
ESP8266 Board
I am using NodeMCU this time, any ESP8266 board that have SPI pins is ok
Display Board
I am using a 2.4" ili9341 board this time, 320x240 resolution is good enough for visualize WiFi signal information
Others
Some bread boards and pin connectors
Step 3: Connection
LCD VCC -> Vin / 3V3 LCD GND -> GND LCD CS -> D8 LCD RESET -> RST LCD D/C -> D1 LCD SDI -> D7 LCD SCK -> D5 LCD LED -> 3V3
P.S. : Adafruit ili9341 library does not require connect LCD reset pin, but this pin should pull up to make it works. At the same time it is better reset the LCD display when the MCU reset so I direct connect both reset pin together.
Step 4: Deploy Program
Download the program from GitHub and program to ESP8266 board:
https://github.com/moononournation/ESP8266WiFiAnal...
If you are not familiar program ESP8266 with Arduino IDE, here is a good instructables:
Step 5: Happy Scanning!
It's time to scan WiFi signal around you and share what you have done to your friends!
37 Discussions
1 year ago
I have the exact same display and I'm using an NODEMCU V0.9 board, when trying to upload the code I receive the following error(also I downloaded the current Adafruit_GFX) library files, any suggestions?:
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:67:67: error: section attribute not allowed for 'bitmap'
drawBitmap(int16_t x, int16_t y, PROGMEM const uint8_t bitmap[],
^
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:69:67: error: section attribute not allowed for 'bitmap'
drawBitmap(int16_t x, int16_t y, PROGMEM const uint8_t bitmap[],
^
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:75:68: error: section attribute not allowed for 'bitmap'
drawXBitmap(int16_t x, int16_t y, PROGMEM const uint8_t bitmap[],
^
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:77:76: error: section attribute not allowed for 'bitmap'
drawGrayscaleBitmap(int16_t x, int16_t y, PROGMEM const uint8_t bitmap[],
^
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:82:36: error: section attribute not allowed for 'bitmap'
PROGMEM const uint8_t bitmap[], PROGMEM const uint8_t mask[],
^
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:82:66: error: section attribute not allowed for 'mask'
PROGMEM const uint8_t bitmap[], PROGMEM const uint8_t mask[],
^
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:86:71: error: section attribute not allowed for 'bitmap'
drawRGBBitmap(int16_t x, int16_t y, PROGMEM const uint16_t bitmap[],
^
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:91:37: error: section attribute not allowed for 'bitmap'
PROGMEM const uint16_t bitmap[], PROGMEM const uint8_t mask[],
^
C:\Program Files (x86)\Arduino\libraries\Adafruit_GFX/Adafruit_GFX.h:91:67: error: section attribute not allowed for 'mask'
PROGMEM const uint16_t bitmap[], PROGMEM const uint8_t mask[],
Reply 1 year ago
Hi gadgets_guy, I have tried program with latest software and source code (Arduino 1.8.5, Adafruit GFX 1.2.2, Adafruit ili9341 1.0.11, esp8266 2.3.0) without any error. You may get update and try again.
Reply 6 months ago
Hi, good night. I can not download the code and the electrical diagram.
my email wagnerdeoliveiraaraujo@gmail.com
which can send the code and electrical schematic. appreciate.Detalhes
Reply 6 months ago
Hi WangnerA6, if you are not familiar with GitHub, simply click the "Clone or Download" green button at the right middle and then select "Download ZIP".
Reply 6 months ago
Thank you, I'll try that
Question 11 months ago
Can you use all thing from wifi analizer ? like on the phone?
Answer 11 months ago
use all thing?
1 year ago
Will any lcd work as long as it works with SPI protocol ??
Reply 1 year ago
Yes, since I am writing base on Adafruit_GFX, you may use any supported display. Just like my commented ST7735 code at ESP8266WiFiAnalyzer.ino.
1 year ago
Excellent project. Quick and easy to make. Nice code work too.
Thanks,
RoyBoy
1 year ago
A wonderful project! I do not think that the person who created this can be held responsible for knowing material costs outside of his familiar area. I wish the nit pickers would stop it!! There are some useful things to be learned here.
Thank you.
NeilRG
1 year ago
I see the 32 CYN price. That screen can't be bought for $5 in the US, or likely anywhere outside of China.
Reply 1 year ago
$7.20 US from http://www.ebay.com/itm/3-3V-240x320-2-4-SPI-TFT-L...
1 year ago
Отстой! Где код?
Reply 1 year ago
Он же дал ссылку на Гитхаб
1 year ago
On AliExpress that particular display is a little less than $14.00 delivery to US. Makes the project in US about $25. Cheaper than I thought. I yield.
Reply 1 year ago
delivery cost is a big proportion on web order, so I always buy more parts for each order to reduce the relative cost. This behaviour make me addicting to electronics ╮( ̄▽ ̄"")╭
1 year ago
Greetings
I have just downloaded, wired, compiled, and run the analyser sketch and am getting errors, (see attached first photo), the program was run on 2(two) nodemcu v1.0 and a v0.9 all with same errors. To get the program to work I added lines to your program (see attached second photo), now it works on all of the nodemcu's. I am running Arduino v1.6.9 on Windows 10, can you explain.
Reply 1 year ago
seems the error does not related to pgmspace.h, it should be connection problem. Check the cable connected well and correct settings in Arduino.
Reply 1 year ago
The usb cable I used is the same one that I've used on my other esp8266 programs with NO problems, and what settings in Arduino should I be checking.