"The Teensy 3 is just only an Arduino software compatible carrier 32 bit ARM stamp using the Freescale ARM M4 K20" --> Thanks Paul S.
Having PWM, touch, hardware serial 1-3, SPI, I2C, analogs and digitals needs a solution to sort out all the I/O
into a organized, modular, solid connection system. This is where the T3 BaseBoard comes into play.
My next door neighbor, the PCB designer, designed the T3 BaseBoard, for my Teensy 3, on very short notice. He designed a modular
connection system to deploy the Teensy 3 for rapid software, hardware testing and design.
The T3 BaseBoard is only a prototype and no expense was spared.
This board was not made for commercial applications but through a little reverse
engineering of the PCB layout pattern it could be easily duplicated.
You could also order the exact board through the same PCB prototype house but the
cost would be prohibitive unless the order quantity of units are increased substantially.
Maybe a large forum group user "at cost" purchasing would reduce the unit cost down substantially.
T3 BaseBoard Features:
Twenty seven, four pin, modular, JST (Japan Solderless Terminals)
two mm. connectors are used for the Teensy 3 I/O. (includes +3.3 VDC power and ground)
The 4 pin modular format is the same throughout with minor exceptions.
This same 4 pin modular pin-out format is incidentally exactly compatible with SeeedStudio's
low cost Grove electronic widgets.
Current limits (620 ohm resistors) protects all Teensy I/O pins from over-current, direct shorts,
pin to pin shorts or mis-wired I/O connections.
On-board 1 A 3.3 VDC LDO regulator is used for additional Teensy 3 power.
Needs an external +5 VDC +- 5 % regulated power supply input.
Two on-grid ( 0.1 space) 14 pin header stacking sips (1.6” on-grid apart) for Teensy 3 breadboard testing.
Two on-grid ( 0.1 space) 14 pin header header sips also for Teensy 3 breadboard testing.
On-board special Teensy 3 power and signal protection designed to keep the Teensy 3 healthy and from user destruction.
Three hardware serial I/O ports on separate JST modular connectors. (with power and ground)(Serial 1-3)
Three separate SPI bus I/O on modular JST 2 mm connectors with chip selects. (SPI 1-3)
Four individual I2C bus on JST modular connectors. (with power and ground and optional bus pullups)
Six, quick connect, on-board, low power, 3 mm LEDS with dropping resistors for user status testing.
A complex but flexible on-board power setup configuration with many user power options.
Eight analogs on four JST modular connectors using the Teensy 3 provided clean "analog ground".
Please note: Due to the PCB prototype house board size limitations, none of the Teensy 3 bottom I/O was
included on the T3 BaseBoard.
Any comments welcomed for improving the T3 BaseBoard.
BTW ... See attached pdf pic for the T3 BaseBoard
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