For the LASER, we need to know which power we have to use, in order to know the LASER’s class. It was a difficult question which I had to think and reflect on. Actually, the class 3B is a higher level of LASER, but more dangerous. On another way, I thought that a 3R LASER couldn’t be powerful enough. Finally, after some researches, we decided to take a 3R LASER of 5mW, which would be sufficient for projecting animations. Furthermore, the LASER will be in green colour (520 nm) , thus points will be more apparent and distinguishable.
There are 2types of LASER that we can use: The LASER diode, that can be used like a simpleLED or the LASER Diode Pumped Solid Stage. We will use the first one.
With those informations, we can now specified some characteristics like the tension : 2.8 – 6.5V/ DC
We will control our LASER with the TTL modulation and not a analogic one. We can also shade the beam’s brightness with PWM mode.
Now, we also know that in order to show an animation, we need 300KB/s = 2.4 Mbits/s.
Also, 10BASE-T Ethernet can provide us 10Mbits/s which is enough. We can also take another specification of Ethernet that will be widely enough like 100BASE-T .
For the Wi-Fi, norms are differents by the range and the rate. We can use almost every norm, but we prefer to have a considerable range in order to do the LASMO’s configuration everywhere in a site. So,we will use the 802.11n norm Wi-Fi.
Now, we have to identified the micro-processor we will use