M1 "Narrow" Tibbits

M1 Tibbits are single-width modules occupying one "M" socket on the standard tile. Their footprint is roughly 7 x 14 "squares" (one "square" is 2.54 x 2.54 mm).

M1 devices have four I/O lines for interfacing with the outside world. We found four to be the magic number: it is just right for a wide variety of I/O functions.

M1s can be short (M1S) or tall (M1T). Most M1 devices fit into "short" 12.5mm shells; a select few are 17.5mm "tall."

Each M1 module's color will tell you if it is an...

M1 Tibbits can incorporate up to four status LEDs.

I/O pins

M1 modules have two rows of six pins each:

Pins 8-11 are control lines D-A. They are for interfacing with our embedded modules or other microcontrollers. On Tibbo Project PCBs (TPPs), these pins are connected to the main CPU.

Pins 2-5 are I/O lines facing the outside world. On TPPs, they go to Tibbit connector sockets (i.e., connect to C1 and C2 devices).

Pins 6 and 12 are the GROUND and +5V power pins. Most Tibbit Modules consume (take) 5V power. There are also power supply Tibbits that generate 5V power from a variety of sources. Those output 5V through pin 12; for an example, see Tibbit #33.

Pins 1 and 7 are for the additional +15V and –15V voltages. These are optional and only needed by a few Tibbits. Special power supply Tibbit #12 generates +15V and –15V from the main 5V power.