Yeo Chai Heng

How I created my own USB powered LED nightlight

If you wish to avoid tripping in a very dark room while not affecting sleep quality, then you can use a nightlight to succinctly lit up a portion of your room.

While there are many nightlight variations out there, it can be a meaningful exercise to try to create your own out of items that you already own or have in the house.

For example, instead of throwing away the Carrot Carotene Calming Water Pad container after the water pads ran out, I used it to create my nightlight.

Since it is translucent, this container can help dim the lights coming from the naked 5V Warm white LED light strip.

Given that, let us take a look at how I made use of the items that I already have to create a USB powered LED nightlight.

With some level of variations, you should be able to make your own USB powered LED nightlight too.

How to add an inline cord switch onto the cable of a USB powered device

Some time ago, I shared a post of how to make your own USB powered LED light. If you follow that post, you will be able to make your own USB powered LED light that can be attached to a USB 2.0 power adapter on your wall socket. When you turn on your wall socket, the lights will turn on. After you are done with using your light, you can turn off your wall socket to turn off the lights.

Sounds like common sense right?

However, your wall socket plug may be too far to reach at your convenience. In such a situation, you may want to add a switch onto the cable of your USB powered device.

Given that, this post discusses how we can add a switch to a 5V USB wire. In this post, I will use a white inline cord switch as an example to show how we can add an inline cord switch to a 5V USB wire.

Rendering multiple checkboxes with WTForms and Bootstrap

When you use WTForms and Bootstrap, you can quickly build up the dashboard for your own content management system with Python.

This is because WTForms provide several out-of-the-box implementations for rendering some basic fields that for capturing form data.

However, rendering multiple checkboxes can be open to different UI implementations based on users' preferences. Therefore, different fields and widgets are available in WTForms to cater for different ways of displaying a form input to the user.

Given these points, let's see how we can render multiple checkboxes with WTForms and Bootstrap.

How to make your own USB powered LED lights

Since upstream USB connectors can supply 5V of DC power to downstream devices, we can use USB connectors to power LED lights.

While there are many USB powered lighting options available in the market, making your own gives you more flexibility in the form factor.

With this in mind, let's look at how we can make our own USB powered LED lights.

How I repaired one of my corrupted git repository on gogs git server

While trying to commit my codes to my Raspberry Pi gogs git server, I got a rejection:

 ! [remote rejected] master -> master (missing necessary objects)
error: failed to push some refs to 'http://192.168.1.115:3000/org/a-project.git'

In addition to that, I got a HTTP 500 when I try to view the repository details page via the dashboard.

Since I can view my other repositories on my gogs git server, something must be wrong with a-project.git.

Given that, here are the steps that I took to rectify the issue.

My Logitech MX Master 2S cursor was not moving on my computer screen and how I made it work again

While trying to capture screenshots on my Mac, I noticed that my mouse cursor was jittering and not doing my bidding.

After a while, my Logitech MX Master 2S mouse cursor stopped moving altogether.

Since I considered Logitech MX Master 2S wireless mouse a good buy, I decided to repair it.

This was how I went about solving the problem.