Category Archives: Projects

EEE Reborn – Flashing LED Sign

The signs and logos used in the Academic Week and students course parties, usually designed and built by finalist students, have been more and more present over the last few years. This time, it was us, first year students that came out with the initiative of building our own LED sign with the purpose of better representing our course, attracting more consumers and at the same time, adventuring themselves into the world of inventions. Continue reading EEE Reborn – Flashing LED Sign

PIC Programmer – PicPgm

While we’re still working on the next workshops, here’s a very simple and useful mini project, a low cost 40 pins PIC programmer using the serial port.

Micro-controllers play a very important role in electronics, as they are able to perform tasks in automation, control, image processing, among others. Their usage is immense. There are various families of micro-controllers, one of those is the Microchip’s PIC (Peripheral Interface Controller). PICs are very popular as they are relatively cheap and because of their characteristics, for example their low power consumption, internal oscillator and free development tools. Continue reading PIC Programmer – PicPgm

PVC tweezers for the manufacture of PCBs

In PCBs manufacture, it’s required to handle very carefully the printed circuit board, due not compromise the work done so far, and to avoid the risks of the chemicals used in the process.

One of the tools used in the manufacture process of PCBs are the tweezers. These can not be in metal material, because the perchloride of iron, is a metal corrosive.

eLab leaves here a suggestion, of how to make various sizes of tweezers. From a PVC strip, and the help of a hot air gun, we can mold the PVC in the form of a tweezer. Continue reading PVC tweezers for the manufacture of PCBs

Power Over Ethernet (PoE) Adapter

Description

Power over Ethernet or PoE, is the technology used for power transmission in network equipment, via network UTP cable, together with data. PoE is useful in situations when we want to connect network devices that are far away from a power source. In this situation we take advantage of the Ethernet cable, because there are 4 pairs of wires, but for the majority of networks, only 2 pairs are used for data transmission. PoE uses 2 unused twisted pairs, for electrical transmission needed to power the device. Continue reading Power Over Ethernet (PoE) Adapter