Hd Webcam Hyumdai Softwares Blog

Coach - connector PIC40USB and Nunchuk (Wii)

I posted two modules over Coach project (the was in the pipeline).

First, the layout (just the outline) of PIC40USB to serve for the PIC18F4550 and the like. The novelty is that it includes a connector for USB and the ability to power electronics from the USB (not advisable to feed the rest of the modules from the USB and it might overload).

Second, a module for connecting the Nunchuk (auxiliary control of the Wii) with the remaining modules (using the I2C protocol), also carries the connector and built-in protections to prevent short circuits and power surges or use 5V supply.

hope shortly to put more modules (the PIC80 is in the process) and make these, I also modify the properties to set a standard for PCB's used. S2



Ranganok Shahzaman

Histones Are Tightly Packed Into

Tools: Power Supply (II) 3

As I said earlier power supply is essential in an electronics laboratory (and robotics), ideally have a source controlled variable symmetry and PC ... However this is expensive (> 500 €) and over time can interest a high power good voltage regulation.

For this (and to get some fast running) I have become a source of laboratory from a source which was AT home (from an old PC).



benefits that gives me more than interesting to start:

• +5 V (Red)


• -5V (Green)


• +12 V (Yellow)


• -12V (Blue)


• GND (Black): Masa, both are connected to each other and the earth ground ( mass non-floating).


• EARTH (Green-Yellow): Connection to earth ground

I've added a LED and have made a switch on the box itself short supply, so I can better controlled if a short circuit and turn off the power if necessary.

One thing to note is that the ground (GND) is not floating, ie is connected to earth física (EARTH) por lo para algunos experimentos no podremos usar esta fuente, sin embargo siempre se puede hacer una "chapucilla" eliminando la tierra (EARTH) del enchufe mediante un cable de 2 hilos.

A parte de esto, las Masas de los circuitos (+5V) - GND - (-5V) y (+12V) - GND - (-12V) estan conectadas entre ellas por lo que no podremos hacer circuitos independiente.

Además el circuito de 12V no es regulado por lo que no dará exactamente 12V a la salida y habrá que medirla con cada carga que se le ponga.

En un futuro espero mejorar la instrumentación del laboratorio haciendo una fuente regulada, simétrica y variable controlada por PC...

S2

Shahzaman Ranganok