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 Yearling
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May
13
comment What is the purpose of this plate with door rail?
And the 2 stud version was often used to secure the old 9V motor (bricklink.com/PL/71427c01.gif?0) that had two grooves on each sides, allowing it to be removed easily.
Apr
13
answered How to import an unofficial parts archive into LDraw?
Apr
3
answered Lego RCX hardware schematic
Feb
15
comment What are the biggest one piece wheel?
Confirmed, though it is missing a center hub and is thus difficult to use. The next in size that does have one is 59521 bricklink.com/catalogItem.asp?P=59521
Jan
16
comment How can a Mindstorms robot lift something very heavy?
Proper down gearing (and strong structures) can indeed make wonders... See this tiny LEGO RCX robot lifting and moving a 44kg load: philohome.com/hoist/hoist.htm
Jan
1
comment How to control a 88004 Servo Motor with a Raspberry Pi?
Problem is that I am not Python savvy... Might be a physical interface problem too?
Dec
30
awarded  Yearling
Dec
30
comment How to control a 88004 Servo Motor with a Raspberry Pi?
The duty cycle percentage is the ratio between powered time over cycle period. Eg. here, a 30% duty cycle at 1200 Hz means 250µs on / 583µs off.
Dec
29
answered How to control a 88004 Servo Motor with a Raspberry Pi?
Dec
7
answered City scale connection for five-bladed helicopter rotors
Nov
27
comment How can I attach a Technic Linear Actuator to a EV3 Medium Motor?
For the large linear actuator you can also used this specialized part (bricklink.com/catalogItem.asp?P=61905) but unfortunately it's rare and expensive
Nov
15
answered How can I wire up the LEGO 2838?
Nov
10
comment Help identifying a black round piece with three rings
For the record, this part is also one of the two glued halves forming the old pin joiner (brickset.com/parts/design-75535). Its LEGO reference is 6221 (brickset.com/parts/design-6221)
Oct
27
answered Unlimited engine option does not work
Oct
20
answered What adhesive can bond LEGO bricks to metal?
Sep
29
revised Faulty NXT Motor
added 4 characters in body
Sep
27
answered Faulty NXT Motor
Aug
24
awarded  Enlightened
Aug
24
awarded  Nice Answer
Aug
7
answered Where can I find LDraw examples?