Here I present a Lego Technic MOC programmable controller to control two independent Lego Technic functions simultaneously. The controller uses two tank tracks with pins on them to select between neutral, forward and reverse to control a small crane. The timing of the switching can be controlled ...read more

Here I present a Lego Technic Spirograph machine programmed using Powered Up. The powered up controller is used to maintain the desired gearing ratio between the turn table and the inner gear to draw a spirograph that replicates the real original spirograph drawing toy.

This video presents a lego technic two speed automatic gearbox using two motors and the Powered Up (PU) lego technic control system. Each motor uses a pivoting gear to either connect to it's gear to the left when rotating in the forward direction or to the gear to the right when reversing. Th...read more

Here I present a Lego Technic MOC gearbox with 1,000 different speeds. This is not a sequential gearbox, instead the gearing ratios are selected using 10 switching levers each of which adds a power of 2 to the overall output gearing ratio. A down gearing of 1000 to 1024 at the end of the gearbox ...read more

A Lego Technic MOC modular binary counter is presented and used to measure the RPM of a large Lego Technic motor. The counter is constructed of a series of 4 sides reels each representing 2 bits. These are held at neat 90 degree angle multiples by a micro stepper mechanism. The overflow bits are ...read more

Here I present a 256 speed gearbox controlled by 8 switches. This design is based on a 2 differential N to P gear ratio design presented in one of my other videos. The gearbox allows 256 different gearing ratios to be selected including 1:44, 1:34, 1:33, 1:32, 1:28, 1:27, 1:24, 1:2...read more

This Lego Technic MOC has over a billion to 1 gearing ratio. It is designed to resemble an architectural tower structure. I measure the input speed of over 3000 RPM using a digital tachometer and calculate the rate of rotation of the tower top to be about 222 days per rotation.

This video shows a Lego Technic 7 segment LED panel that can count upwards or downwards using a track driven program via tow ball pins. The LED display can be programmed to show digits or one of 17 different letters to make a sequential display to animate small text messages.

The panel is...read more

This video presents a Lego Technic version of the spinning top battle game "Beyblade". A Lego Technic launcher for spinning tops made out of Lego is demonstrated and a number of battles are fought between various top designs. The launcher uses a high speed buwizz buggy motor to drive th...read more

Here I present my design for a compact and powerful Lego Technic 2 speed automatic gearbox.

The gearbox uses the Lego Technic Powered Up functions to detect speed and deduce torque from that to make gear switching decisions. The gearbox switches between a high gear of 1 to 4, to a low gea...read more