Mutchus

If you are tired of connecting the same I/O devices every time you prototype a new project then this board could save you a lot of time. All the necessary pins of the devices on the board are accessible through headers that allows easy connection of the board to a breadboard circuit or other development boards (Arduino, etc) using jumper wires.

8051 Generic Board is my fist project board in 8051 microcontroller course. This board is design for atmel 89c51 ic, please refer to its datasheet for more information. Now come towards board description: There are four i/o ports in 89c51, this board is design in such a manner that all ports are byte addressable whare as port3 can also be access bit wise in other world port 3 is also bit addressable. This can be done by proper selecting the jumper j2 and j5 and etc.Note that there are 8 jumpers at port 3 and also 8 jumpers at the u4 & u5 o/p pins are required, whereas in schematic only four are shown. 74ls245 latches are used to decide the direction of data. Switch SW1 is used to select the direction. If SW1 is towards vcc than the data direction is from 89c51 to latch o/p pins. And if SW1 is towards gnd than the direction is from latch to 89c51. For more info please refer to its datasheet. LED bargraph are used to indicate the status of 89c51 port pins; that is data in or out. Con...

I previously showed you my PIC32 proto board I made on verroboard (http://www.blogspot.com/2016/02/pic32-development-proto-board-on.html). To make the proto board “more of a product” and easy to reproduce, I was working to make the proto board on a PCB. I used ExpressSCH to draw the schematic, and used ExpressPCB to design the PCB. Once designed, Professor Bruce Land got the PCB made from ExpressPCB themselves. The PCB is just to be a basic board with the PIC32MX250F128B placed on it. The power supply connections are provided as are external oscillator connections (if needed). Additionally, there is a nice convenient power supply input connector (standard 2.5mm jack/plug). All the IO pins along with power (Vin and +3.3V) and ground are placed on a SIL connector at the edge of the board so that the board can be conveniently placed on a breadboard for experimenting and prototyping (see pictures below). It's a nice little 2-layer PCB measuring only 3.1 inches by 1.8 inches. I chose t...

T'Con board Circuit Diagram – FB-03C – Part number 8204 000 92022 -  Philips 37" LCD TV   Tcon LVDS & Control  Tcon power  Tcon supply Tcon mini-LVDS  Click on the schematics to magnify