Skip to main content

NXT Whac-a-Mole - Guest Blog from LinearActuator

Here is a quick guest blog from LinearActuator about the Whac-a-mole that won one of the NXTLog awards for the 'NXT NXT' challenge:

The NXT Whac-A-Mole, previously mentioned here and here during its' construction stages, is finally completed and entered into the NXT NXT Challenge, where it was awarded the "Creative Use of NXTLog" award.

The Whac-A-Mole consists of a number of "Mole Whacking Platforms" and a Score Indicator Tower, all connected by two NXT bricks via Bluetooth to recreate the carnival classic. The game uses an assortment of motors and sensors to create a fun and entertaining game that the whole family can enjoy.

Here is a quick overview of the Whac-A-mole:

Using Bluetooth, the "Slave" NXT brick tells the "Master" brick whenever a mole is hit. The moles are made out of pistons from such models as the Technic Bulldozer. When hit, the piston rod pushes down onto a touch sensor, which tells a NXT brick to add a point to the players' score, raising a point indicator attached to a score tower.

The score tower was made using the Catapillar tracks that are also from the Technic Bulldozer. When a point is scored, the tracks move, causing an attached score indicator to be raised or lowered.When the score indicator reaches the top of the tower, an Ultrasonic Sensor tells the master NXT brick to lower the score indicator and begin a new, faster, harder game for the player.

The 3 Light sensors are used to help create an exciting atmosphere, and can easily be programmed to light up in a series of patterns when the player scores a point.

For more information, please have at look at the NXTLog page for the NXT Whac-A-Mole here

To see a quick video of the Whac-A-Mole in action click here



Popular posts from this blog


2023 is the 25th Anniversary of the MINDSTORMS brand. For 25 years, MINDSTORMS has educated and inspired a generation of robot builders, both children and adults. Unfortunately, the LEGO Group decided to end the line on December 2022. Many ROBOTMAK3RS have been passionately involved with the development of MINDSTORMS through the MUP and MCP programs. Even with the newest Robot Inventor line, several ROBOTMAK3RS were invited to submit additional bonus models that were included in the official app. Regardless of the retirement of a major LEGO robotics product line, ROBOTMAK3RS continue to MAKE-SHARE-INSPIRE using all LEGO robotics platforms available to us. Here is the official statement from LEGO. Since its launch in September 1998, LEGO MINDSTORMS has been one of the core ‘Build & Code’ experiences in the company’s portfolio, carrying with it significant brand equity and becoming a stand-out experience for the early days of consumer robotics and leading to current Build & Code

Celebrating 25 Years of MINDSTORMS

In celebration of the 25th Anniversary of MINDSTORMS, we take a trip through history. Please also visit ROBOTMAK3RS Community every week as we highlight different projects all through 2023 in celebration of the anniversary. Some of the early history is based on the content shared by  Coder Shah  in our  MINDSTORMS EV3 Community Group . Some of the text and links may have been edited from his original posts for consistency and clarity.  1984 - Kjeld Kirk Kristiansen watched a TV program called "Talking Turtle," where MIT professor Seymour Papert demonstrated how children could control robot "turtles" using LOGO, a programming language he developed. 1988 - The collaboration between MIT and LEGO resulted in LEGO TC Logo in 1988, which allowed students to control LEGO models using computer commands. The video shows Papert demonstrating TC Logo. 1990 - LEGO TC Logo was hampered since the robots you built had to be tethered to a personal computer. LEGO and MIT

Celebrating MINDSTORMS with a Remix Part 1

In honor of the 25th Anniversary of MINDSTORMS, we asked ROBOTMAK3RS to combine a LEGO set of their choice with a MINDSTORMS set. Here is what these five ROBOTMAK3RS came up with.  MINDSTORMS Chess Assistant by Arvind Seshan Overview: When you are new to chess, it can be a challenge to remember which pieces go where. Now, you can use machine learning and LEGO MINDSTORMS Robot Inventor to build a tool to help you learn where all the chess pieces go on the chess board. Sets used: LEGO® Iconic Chess Set (40174) and MINDSTORMS Robot Inventor (51515) Review: I really like how the chess set base can store all the pieces underneath and that the board neatly splits in half for handy storage. The chess pieces themselves are very sturdy and well built. My only criticism is the building of the box itself. It was quite difficult to see what pieces to use and since the entire box is made mostly of thin plates, it took a lot of time and patience. I would have liked the storage area to be sliding dra