LEGO specifications

From Exterior Memory
Jump to: navigation, search

LEGO dimensions

See https://bricks.stackexchange.com/questions/288/what-are-the-dimensions-of-a-lego-brick and http://www.robertcailliau.eu/en/Alphabetical/L/Lego/

A 1x1 brick is 8 mm by 8 mm width, and 9.6 mm (3x 3.2) high.

The stud on top of a brick has 4.8 mm ⌀, and is 1.8 mm high.

LEGO Power Functions

See e.g. https://www.philohome.com/tech.htm

LEGO power functions works with 9V. A cable has 4 wires: 9 Volt, ground, C1 and C2. C1 and C2 are either 0 Volt or +9 Volt, and are used to power motors or lights.

Speed of motors are controlled with a pulse width modulation (PWM) on C1 and C2.