How to use / navigate this blog

This is a quick summary of how to use / navigate this blog.

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Working with HC-SR04 Ultrasonic Sensor

This is a brief summary of how to use HC-SR04 ultrasonic sensor.


RJ-11 as physical I/O interface

For board with multiple I/O ports and each port has multiple wires, I find it quite convenient to use RJ-11 as the physical I/O interface because it could be plugged / unplugged very quickly and it supports up to 6 wires in one port.



This is a summary of my experience testing out the SPIFFS feature for ESP8266.

Below is the source of the Arduino sketch used.

ESP8266 - Developing Program Using ESP8266 SDK

This is a brief summary of my experience with setting up the ESP8266 SDK environment and using the ESP Open SDK.

OS: Windows 8.1


ESP8266 - WiFi Manager

This is a brief summary of my experience working with WiFi Manager developed by tzapu for ESP8266. A big thank you to tzapu for this amazing work. The original version of the code can be found at https://github.com/tzapu/WiFiManager/blob/master/examples/AutoConnect/AutoConnect.ino

The instruction for getting WiFiManager ready for Arduino IDE can be found at https://github.com/tzapu/WiFiManager.


ESP-12F Programming Jig and Breadboard Adapter

I recently developed a programming jig and breadboard adapter for ESP-12F.

The Programming Jig

The programming jig (center right) and CP2102 (center left).