Inventions of All Time

An idea came up to me to post all the inventions that changed our lives and the things we can’t live without. Every morning, we wake up and use these tools that shaped the modern era, and simply we can’t ignore these tools that has become part of our daily lives. I will also be citing its unique qualities that makes it useful. Giving you some historical information about the inventor, his traits and accomplishments, so we can learn from them and be our inspiration. For all of us are inventors, we just don’t know it.

Turning Cars

This is how cars should turn. You can fit in cramped spaces and park easily. I think controlling the car’s steering wheels electronically is much safer than controlling it mechanically. Computations are much more exact than mechanical steering which causes a lot of accidents.

Raspberry Pi Robots! Looks so cool that kids will love.

3D Hologram LED TV

I was searching for projects using the Arduino when I came about this YouTube video published by VECT. It looks interesting since you can put LED lights in a cube which you can control using as simple Arduino. Imagine making these same LED lights smaller like found on LED TVs, and making them like this cube.

I think this will produce a Holographic TV where you can view it in many angles like looking at a human’s face’s front, back, side, and on different angles. 

The future of tech is interesting.

YouTube Video by:


Rolling Platform

Mostly, you have seen transporters that have two wheels like the hoverboard, and the Segway. The difficulty lies on balancing the device since it got two wheels. Thus, four wheels is much stable.

You saw this that looked like what Amazon is using in their warehouses. The main difference is they are used for transporting heavy loads for warehouse use and it has AI. Mine’s a consumer device that you can use for transportation.

The construction is simple and it needs some shock absorbers for terrain adaption. There is a cable that you can hold and press buttons to move forward, right and left. Yes, it has ‘tank’ like wheels but is limited to four for conservation. I didn’t do the math if it needs a 24 volts motor or 12 volts should be sufficient.

Basically, this is just a rough draft of a cool idea.

Fernando L. Cuevas Jr.


Humidity and Temperature Arduino Project

Back in the day, we would study weather by making wind vanes out of wood and barometers to measure humidity and temperature. Now, we have Arduinos, pocket-sized micro controllers and computers, electronic sensors to do this. The good part is it’s so easy to do even for a child, and all you need to learn is just a search away. Another benefit is it’s affordability. You can buy the components on-line from Amazon, or Lazada.

I can now measure humidity and temperature electronically. And, to know if it will rain, humidity is one factor on predicting it.

Why bother making this if we have smartphone apps to do just the same? Well, those data came from sources only to a specific area and not specific to your place. Some parts of your city is raining and some parts are just cloudy, and they got those data only where they are situated in. Thus, this project.

These are the required components:

  • Arduino Uno.
  • 3 pins DHT11 Humidity and temperature sensor.
  • Breadboard.
  • Wires.
  • Laptop or Raspberry Pi

Here is the schematics: 


  1. You place the sensor on the breadboard.
  2. Attach black wire (whichever color you use), to the negative pin of the sensor. A minus (-) is indicated on the sensor and on to GND of the Arduino.
  3. Attach a white wire to the Output (the middle pin), and the end to Digital (2).
  4. Attach a red wire to the positive (+) pin of the sensor and the end to 5V.
  5. Download the source code: Source Code Zip File. Note: You need to install the Arduino IDE from
  6. Connect your Arduino to your laptop USB and upload the Arduino source code (it ends with the .ino file extension). For more info regarding setting up your Arduino, go to
  7. Once uploaded, go to the Folder and open a Powershell. You can do this easily by pressing the shift key while right-clicking it and choose Open Powershell.
  8. Inside the folder with the Python script (.py), run this on the shell (without the quotes): “python .\humidity_and_temp_sensor_dht11_3_”

If everything is connected properly, it will show the temperature and humidity in the Powershell console.


If it says, “error 101” then check your wiring. Your wires might be defective or not properly inserted on your breadboard. Replace your wires and move the sensor to another location on your breadboard.

Check the serial port where your Arduino is connected. In Arduino IDE, go to the menu and choose Tools->Port and see where it is connected. Go to Tools->Board Info to check if your Arduino is connected and working properly.

Check the Baud Rate if it is 9600.

Check if SimpleDHT Library is installed. Go to menu, Sketch->Include Library->Manage Libraries. Search for DHT (Simple DHT), and install it.

Some DHT11 3-pin sensors has different pin placements (There is even a four pin sensor). You can check it by looking at the label above the pins and it’s usually the plus and minus signs.


There you have it. A quick and easy way to learn more about your environment by using a temperature and humidity sensor and an Arduino.

If this is your first project, then “Congratulations!”

You can learn more about Arduinos from their official website and clicking the “Learn” link.

Or, you can visit Arduino Playground, there are some interesting ideas they have there:

Please share:


Health Smartphone

I’ve been evangelizing people about how practical the Apple watch is because of its health related features (even if I don’t own one). I’ve seen people using it and praising it for its health benefits by keeping you fit, and monitor your body for vital signs such as: calories, blood pressure, heart rate, sugar levels, and more. But, these features is confined to watches such as the Apple watch.

What if, you build a smartphone with these features by putting in sensors? Why not? That will differentiate this phone from others and it will also be super useful and brings a lot of value to a common, ubiquitous smartphone that we bring everyday and everywhere.

I’m not against buying ‘another’ device dedicated to this, but it is kind of a an inconvenience bringing two devices and always charging it both.

So, I guess this is kind of a suggestion that make smartphones even do more and help others to be healthy and enjoy life.