This "small" robot, although not the first work to be published on this page, was, in fact, my first solo project in robotics.

 

When a group of students from a subject called "Science Workshop" asked me about possible works they could develop, the idea of building a car that could be controlled through an application installed on a smartphone came up.

 

When I got home, I asked myself if I could also build such a car. After buying the necessary material, I started building the car, which was ready the same day I started building it. Truth be told, I never thought I'd make it this fast.

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What is certain is that this car was the basis of several projects, or if we prefer, it was divided into several phases, like this:

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1. Construction of the car controlled by an application installed in a  smartphone .

2. Installation of ultrasonic sensors that are activated by the same application (The fact of driving was not enough, I had to go further!).

3. 3D printing of the supports for the 9V battery, the microservo and the ultrasonic sensors (it was one of the first projects to be printed on my 3D printer). I had built some bases out of cardboard and acrylic, but as they were glued together and were made by hand, they were very fragile. The supports I used can be downloaded from the Thingiverse platform: HC-SR04 support and 9g micro servo support .

4. Replacement of the 9V battery with two LiPo batteries, each 3.7V (The 9V battery used up very quickly! :( ).  

5. Installation of a LiPo battery charge monitoring system, so as not to destroy them due to misuse of charging and discharging (LiPo batteries are expensive, I cannot afford to spoil them! ;) ).

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The schematic of this project can be found here and the code can be found here . ​

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