A dual-RCX, six motor dog. Slashdot Review. Cindy Salwen pointed out a description of the protocol for the serial interface between the computer and the Dacta Control lab. This may or may not be related to the protocol used by the RCX, but if you`re reading this page, it`s probably interesting information anyway. She also contributes another URL: National Instruments (LabVIEW) pages. Robolab is available for sale from Pitsco.
Click here to download the full size of the above Circuit.
Fred Martin, arguably the father of the RCX (well, given that LEGO redesigned the Programmable Brick from the ground up for production reasons, the *grand*father), has a page on LEGO MINDSTORMS. Kekoa Proudfoot says "toast that warranty!" He took apart his RCX and took some pictures of the inside of it. He also looked up the numbers for some of the chips. Peter Ljungstrand bought a CyberMaster kit, disassembled the main unit, and took pictures. Dave Baum says that RCX to RCX communication is pretty simple. There`s a low level command in the RCX to send a message which contains a single 8 bit number as payload (plus the protocol "wrapper"). The RCX also remembers the last "message" it has seen, and this value can be used to make decisions. Pretty basic stuff, but still enough to do some reasonable things. Dave also talks about the various LEGO motors. The motors that come with MS are the 5225 Gear Motor. Such motors may be purchased at LEGO Shop at Home. Philippe Hurbain has compared Lego 9 volt motors. Jim Studt built a public Magic 8 Ball. Enter your question and press the Ask button, and you see a video of an RCX spinning the 8 ball, along with the final answer that floats to the top. Doug Carlson has a four-wheel synchro robot which can move in any direction. He uses two angle sensors (available from Pitsco/Dacta), and can make it move in a perfect square. Alex Wetmore built a robotic platform using the plans for the...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
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The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
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In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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