Archive for Multiplexer
LEGO Mindstorms NXT Bin Emptying Robot – Mark III
This is a LEGO Mindstorms NXT "Bin Emptying Robot Mark III". It is part of a larger project I have been working on, my "Ball Sorting Factory". A forklift delivers full Bins of balls to be emptied. The Emptied bins are then taken away to the processing facility to be refilled. The Mark II version [...]
LEGO Mindstorms NXT Bin Emptying Robot – Mark II
This is a LEGO Mindstorms NXT "Bin Emptying Robot Mark II". It is part of a larger project I have been working on, my "Ball Sorting Factory". A forklift delivers full Bins of balls to be emptied. The Emptied bins are then taken away to the processing facility to be refilled. The Mark I version [...]
LEGO Mindstorms NXT Bin Emptying Robot – Mark I
This is Mark I of my LEGO Mindstorms NXT Ball Sorting Factory, which I have been working for a number of weeks. The whole project consists of three main parts. Firstly there is the 'Ball Sorting Factory', made up of Gantry System with 3-Axis: Front-Back, Left-Right, and Up-Down for the Ball Gripping Claw. The Second [...]
Mindstorms NXT Forklift Truck & Bin Emptying Machine
I'm currently working on a Sorting Factory, complete with LEGO Mindstorms NXT Forklift Truck and Bin Emptying Robot. Part of a larger project I'm currently working on (partly visible in the upper-left corner of photographs). The Forklift is used to deliver full Bins of balls to be emptied by the Bin Emptying Machine, and then [...]
Mounting a Mindsensors GlideWheel-M to a Worm Gear
The Mindsensors GlideWheel-M, Power Functios (PF) Motor controller for the NXT is designed to control PF motors from NXT. Providing high precision speed and rotation control, in an easy to use design. The GlideWheel-M PF Motor controller allows direct connection of PF Motors to your NXT. No extra power needed as Power for the motors is [...]
RobotC: Using Multiple Ultrasonic (Sonar) Sensors
When using Multiple Ultrasonic (Sonar) Sensors together, you need to configure the Sensors to use ‘Single Shot Mode’, so only ONE Sensor is taking a measurement at any time. If you have all the Ultrasonic Sensors on at once they interfere with each other and give incorrect readings. To get around these issues, you need [...]
‘Melon Factor’ – Conclusion
This was to be Part 4/5 of my Melon Factor Project, for the NXTLog FoodFactor Competition for May 2012. It's unfortunate, but time has not been kind. I had more important real life issues that dragged me away from the project. Link to this post!
Melon Factor – Part 3
This is Part 3 of my Melon Factor Project, which is part of my NXTLog Food Factor Competition Entry for May 2012. In Part 1 of my project, involved transportation of the Melons using a Forklift Truck to transport the boxes of melons from the delivery depot to the processing plant. Part 2 of my [...]
Melon Factor – Part 2
This is Part 2 of my Melon Factor Project, which is part of my NXTLog FoodFactor Competition Entry for May 2012. In Part 1 of my project, for the transportation of the Melons I had them in 'Bottom Drop' Boxes. I used a Forklift Truck to transport the boxes of melons from the delivery [...]
NXT Beer & Soft Drink Bottle Opener
After seeing a couple of LEGO Mindstorms NXT Bottle Openers on the net, I decided to tackle building my own… The task turned out to be somewhat more difficult than I envisaged. The most difficult part by far was the Gripper Mechanisms, as they had to securely hold the Bottle and it's cap in a [...]
My NXTLOG ‘Crazy Contraption’ Entry
Many robots are designed to do simple tasks in an efficient way to make our lives easier. But what if robotic machines did simple tasks in an over-complicated way? This is the type of Machine that 'Rube Goldberg' envisaged for his weird world. Below is an example of a 'Rube Goldberg Light Switch'. I have [...]
My NXT Says Numbers Out Aloud!
Update on NXT Sound: Dexter Industries have taken on my suggestion of using a "Quadravox QV606M1 Sound Module" for an add-on Audio solution for the LEGO Mindstorms NXT kit! For further updates on developments please check www.rjmcnamara.com regularly. I've been working on a project where I was working with lots of numbers as part of [...]
Quad Track: IR-Ball Seeking Crane
This is my LEGO Mindstorms NXT Quad Caterpillar Track Crane, which uses my 'Ultimate Grab' to pick-up and retrieve a Hitechnic Infra-Red Electronic Ball. The Chassis houses 2x NXT Motors to drive the Left and Right pairs of Tracks. A third NXT Motor is used to raise and lower the crane arm. A Small PowerFunctions [...]
NXT Crane with Ball Sorting Conveyor System
This is a LEGO Mindstorms NXT Crane which delivers balls to a Coloured Ball Sorting Conveyor System. The Ball Sorting Conveyor System uses RC Servo Motors to control the Conveyor and Sorting Mechanism. A single NXT Brick Controls 4 standard 180° RC Servos in the Sorting mechanism and another is used for the Crane's Grab. [...]
NXT Servo Activated Grab
I've been working on a new Lego Mindstorms: NXT-Servo Activated Grab for a crane I am working on. The Grab is driven by a R.C. Servo motor, controlled via a Mindsensor NXT-Servo controller interface to the Lego Mindstorms NXT Brick. Link to this post!
Lego NXT Controlled Pneumatic Switch
Controlling a Technics Pneumatic Switch with the Mindsensor™ NXT-Servo Interface and a 9g R.C. Servo. I've been playing around with LeJOS, Java for the NXT and my Lego™ NXT Sensor and Controller collection. When I came to my NXT-Servo Controller, I decided to through together a new version of my R.C. Servo Pneumatic Switch I designed a few years [...]
Close-up of FlexiPicker Sorting
A close-up of my Lego Mindstorms NXT FlexiPicker sorting coloured balls. The is based on the ABB IRB 360 FlexPicker. The IRB 360 FlexPicker™, is the SECOND GENERATION delta robot for precision pick and place applications. The robot has outstanding motion performance with shortest cycle times at high accuracy, and with up to a 3Kg [...]
Technics Mount for RC type Servo Motors
I have tried a number of methods of mounting Radio Control type Servo Motors to Lego Technics models over the years. Non were overly successful, mostly due to alignment issues. Then in the wee hours this morning, whilst trying to sleep, the answer hits me. Out of bed I jumped (tip-toed), because finally there was [...]
