How to Connect a DS3231 to NodeMCU V3
To connect a DS3231 RTC module to an ESP8266-based NodeMCU V3 development board, we use the I2C interface. The default I2C interface pins of NodeMCU… Read More »How to Connect a DS3231 to NodeMCU V3
Default Username and Password of PLDT Routers 2019
In order to make configuration changes on your PLDT router, you need to know the default username and password of PLDT routers. The Need for… Read More »Default Username and Password of PLDT Routers 2019
How to Run FSCK Manually in VMware
VMware Workstation is a great software for running virtual machines. However, once in a while, the virtual machine’s file system gets corrupted and the virtual… Read More »How to Run FSCK Manually in VMware
Arduino Auto Ranging Ohmmeter, Part 1
An Arduino auto ranging ohmmeter is easy to implement using an Arduino Uno or other Arduino development boards. And depending on the implementation, it can… Read More »Arduino Auto Ranging Ohmmeter, Part 1
Restore Windows Photo Viewer with a Simple Tweak
If you upgraded your Windows from an older version to the new Microsoft Windows 10 version, you would find out that you have a new… Read More »Restore Windows Photo Viewer with a Simple Tweak
How to Control ESP-01 thru a Router
The ESP-01 ESP8266 module can be controlled directly, without using any WiFi router at all. To extend the range of the ESP-01 control, it can… Read More »How to Control ESP-01 thru a Router
How to Control ESP-01 Without a Router
The ESP-01 module is the smallest and the cheapest of all ESP8266 development boards. People usually program it for use via the Internet. The ESP-01… Read More »How to Control ESP-01 Without a Router
How to Compute Resistor Value for LED
In order to safely connect an LED to a circuit, a current limiting resistor is placed in series with the LED. It is quite easy… Read More »How to Compute Resistor Value for LED
ESP-01 with RTC and LCD Display
The ESP-01 module is a popular ESP8266 development board. Its popularity stems from its low cost and its small form factor. But one disadvantage of… Read More »ESP-01 with RTC and LCD Display
ESP-01 ESP8266 NTP Clock with LCD Display
It is possible to make a digital clock out of an ESP-01 ESP8266 module synchronized with NTP (Network Time Protocol) and using a 20×4 LCD… Read More »ESP-01 ESP8266 NTP Clock with LCD Display
How to Program ESP-01 with Arduino IDE
To program an ESP-01 module with Arduino IDE, the module needs to be connected to a programmer adapter. What keeps the ESP-01 module apart from… Read More »How to Program ESP-01 with Arduino IDE