Pi-hole Monitor

Pi-hole Monitor is a Wemos D1 Mini (ESP8266) with an I2C OLED display that is managed through a web interface and sits on your local network and will display statistics from your Pi-hole server.
Pi-hole Monitor Video

Features:

• Display Pi-Hole Statistics
• Total Blocked
• Total Clients
• Percentage Blocked
• Blocked Ads Graph from the last 21.33 hours of data (only 128 lines to show 10 min incriments)
• Option to show Top 3 Clients Blocked
• Option to display 24 hour or AM/PM style clock
• Sample rate is every 60 seconds
• Fully configurable from the web interface (not required to edit Settings.h)
• Supports OTA (loading firmware over WiFi connection on same LAN)
• Basic Authentication to protect your settings
• Video: https://youtu.be/niRv9SCgAPk
• Detailed build video by Chris Riley: https://youtu.be/Rm-l1FSuJpI

Required Parts:

• Wemos D1 Mini: https://amzn.to/2ImqD1n
• 0.96" OLED I2C 128x64 Display (12864) SSD1306: https://amzn.to/3cyJekU
• (optional) 1.3" I2C OLED Display: https://amzn.to/2IP0gRU (must uncomment #define DISPLAY_SH1106 in the Settings.h to use the 1.3" SSH1106 display)

Note: Using the links provided here help to support these types of projects. Thank you for the support.

Wiring for the Wemos D1 Mini to the I2C SSD1306 and SSH1106 OLED

SDA -> D2
SCL -> D5
VCC -> 5V+
GND -> GND-

3D Printed Case by Qrome:

https://www.thingiverse.com/thing:3573903 -- new 0.96" SSD1306 OLED Display https://www.thingiverse.com/thing:2884823 -- for the 0.96" SSD1306 OLED Display
https://www.thingiverse.com/thing:2934049 -- for the 1.3" SSH1106 OLED Display

Upgrading

Once compiled and loaded you will have ability to upgrade pre-compiled firmware from a binary file. You can upload the pre-compiled binary files to your printer monitor via the web interface. From the main menu in the web interface select "Firmware Update" and follow the prompts.

• piholemonitor.ino.d1_mini_SSD1306.bin - compiled for Wemos D1 Mini for the smaller 0.96" SSD1306 OLED (default)
• piholemonitor.ino.d1_mini_SH1106.bin - compiled for Wemos D1 Mini for the larger 1.3" SSH1106 OLED

Compiling and Loading to Wemos D1 Mini

It is recommended to use Arduino IDE. You will need to configure Arduino IDE to work with the Wemos board and USB port and installed the required USB drivers etc.

• USB CH340G drivers: https://sparks.gogo.co.nz/ch340.html
• Enter http://arduino.esp8266.com/stable/package_esp8266com_index.json into Additional Board Manager URLs field. You can add multiple URLs, separating them with commas. This will add support for the Wemos D1 Mini to Arduino IDE.
• Open Boards Manager from Tools > Board menu and install esp8266 Core platform version 2.5.2
• Select Board: "LOLIN(WEMOS) D1 R2 & mini"
• Set 1M SPIFFS -- this project uses SPIFFS for saving and reading configuration settings. If you don't do this, you will get a blank screen after uploading. If you get a blank screen after loading -- check to see if you have 1M SPIFFS set in the Arduino IDE tools menu.

Loading Supporting Library Files in Arduino

Use the Arduino guide for details on how to installing and manage libraries https://www.arduino.cc/en/Guide/Libraries
Packages -- the following packages and libraries are used (download and install):
ESP8266WiFi.h
ESP8266WebServer.h
WiFiManager.h --> https://github.com/tzapu/WiFiManager
ESP8266mDNS.h
ArduinoOTA.h --> Arduino OTA Library
"SSD1306Wire.h" --> https://github.com/ThingPulse/esp8266-oled-ssd1306/releases/tag/4.1.0 (version 4.1.0)
"OLEDDisplayUi.h"

Initial Configuration

All settings may be managed from the Web Interface, however, you may update the Settings.h file manually only the first time loading -- but it is not required.

• Add the address and port for your Pi-hole Server (via web interface).
• Add the Pi-hole API Token from Pi-hole → Settings → API/Web interface.

NOTE: The settings in the Settings.h are the default settings for the first loading. After loading you will manage changes to the settings via the Web Interface. If you want to change settings again in the Settings.h, you will need to erase the file system on the Wemos or use the “Reset Settings” option in the Web Interface.

Web Interface

The Pi-hole Monitor uses the WiFiManager so when it can't find the last network it was connected to it will become a AP Hotspot -- connect to it with your phone or computer and you can then enter your WiFi connection information to get the monitor on your network.

After connected to your WiFi network it will display the IP addressed assigned to it and that can be used to open a browser to the Web Interface. Everything can be configured there.

Donate or Tip

Please do not feel obligated, but donations and tips are warmly welcomed. I have added the donation button at the request of a few people that wanted to contribute and show appreciation. Thank you, and enjoy the application and project.

Or -- you can buy me something from my Amazon Wishlist: https://www.amazon.com/hz/wishlist/ls/GINC2PHRNEY3

Contributors

David Payne -- Principal developer and architect

Contributing to this software is warmly welcomed. You can do this basically by forking from master, committing modifications and then making a pulling requests to be reviewed (follow the links above for operating guide). Detailed comments are encouraged. Adding change log and your contact into file header is encouraged. Thanks for your contribution.