tangint : tech : pcb : blades : comm : intracomm (browse directory)

Intra-communication (intracomm) Blade

The intracomm blade acts as a kind of message router, passing control and data messages from slaved function blades (sensors, displays, etc.) to controlling gateway or computation blades.

What it looks like

Pinouts

The MainHeader (left) has a standard v1.0 blade layout (more details here)

The FunctionHeader (right) has the following pinout

1 : POW1	14 : POW2
2 : POW3	13 : POW4
3 : DSN3	12 : DSN2
4 : DSN4	11 : DSN1
5 : GL_SCL	10 : GL_SDA
6 : DSN_TILE_LEFT	9 : DSN_TILE_SELF
7 : GND(Tile)	8 : [NC]

• POW[n]
  • controls the power of blade[n]
• DSN[n]
  • the digital serial number line of blade[n]
• GL_SCL, GL_SDA
  • the global i2c SCL and SDA lines
• DSN_TILE_LEFT
  • the digital serial number of the tile immediately left
• DSN_TILE_SELF
  • the digital serial number of the tile
• GND(Tile)
  • when the intracomm is properly seated in a tile, the pin is connected to ground

Details

The circuit board layout (ready for physical fabrication/production) is accessible here: JPEG, Proteus. (Information about Proteus)

The circuit board schematic (for those who wish to modify or check pinouts) is here: PNG, Eagle.  (Information about Eagle)

The firmware for the intracomm blade is located here. More details on compilation and upload to come.

Rights

Copyright (c) 2005-2011 Louisiana State University, Center for Computation and Technology, Tangible Visualization Group.

This material is based upon work supported by the National Science Foundation under Grant No. MRI-0521559.

Licensed under the  Creative Commons BY-NC-SA 3.0 license.

Parts List

Part	Part Number	Part-Supplier Number	Supplier	Number of objects in Set
PIC Microprocessor	PIC16f876a	PIC16F876A-I/SP-ND	Digi-Key	1
4.7Kohm Resistor		4.7KQBK-ND	Digi-Key	2
20 Mhz Crystal	ZTT-20.00MX	X909-ND	Digi-Key	1
Dallas Silicon Serial Number	DS2401	DS2401-ND	Digi-Key	1
Small Capacitor .1uF		BC1154CT-ND	Digi-Key	1
Red LED Spot		160-1084-ND	Digi-Key	3
Yellow LED Spot		160-1085-ND	Digi-Key	1
Opto Isolator	AQV253	255-1554-5-ND	Digi-Key	2
Male Headers 2x7				2