5V to 3.3V Logic Level Converter
Is a project that i’m building a problem arise. It’s necessary to connect an Arduino to an ESP8266. But the arduino outputs are 5V and the ESP8266 inputs work with 3.3V. If it is connected directly, the ESP8266 burns.
S-Video – RF Conversion
Today I came across a relevant situation. I was necessary to show a Microsoft PowerPoint presentation an a TV. But the TV and the laptor were 50 meters away, the laptop could not be places near the TV and the only cable that was installed between the two was a coaxial RF cable. The only laptop output that could be used was an S-Video.
How to convert S-Video to RF only with the existing equipment?
Keyes IR Obstacle Sensor with Arduino
A project that i was developing for a workshop about electronics is a LEGO® train controled by an arduino. The project it’s explained in here. There were two situations where it was necessary to detect the train’s position. When this is was arriving to the station and when is was on an external track. First i’ve tried to use “Line Tracking” sensors but didn’t have enough range. On the second try used a Keyes IR Obstacle Sensor (this model) and they worked.
LEGO NXT World Explorer
One project that i’ve presented on an electronic and computer’s workshop that happened in Castelo Branco, Portugal (II Workshop de Electrónica e Informática) consisted on a robot build with LEGO® and controlled with a LEGO® NXT kit (borrowed by the School of Engineering of the Castelo Branco Polytechnic Institute) that explores the space around it without touching anything. For that i used an ultrasound sensor (LEGO® 9846) and two touch sensors (LEGO® 9843).
Arduino and LEGO® Power Functions
On june 10 i attended a workshop about electronics and computer (http://ei.aicb.pt) with a project bases on LEGO Power Functions and Arduino.
The project involves a LEGO Train that was controller by an Arduino. The goals were: