NXT Mindstorms tachometer speed computer (RPM) by techbricks.nl

http://www.techbricks.nl made a NXT tachometer which measures revolutions per minute. I made one version for the RCX Mindstorms legacy rotation sensor and one for the NXT Mindstorms motor (the built-in tachometer). The speed (RPM) is displayed on the NXT screen in large digits. The upper number displays the revolutions per minute over the last second. The lower number displays the rpm over the last minute. It is the average of 60 samples of one second made in the last minute. The RCX legacy rotation sensor makes 16 ticks per rotations and the NXT built-in tachometer makes 360 degree per rotation. This way of measuring is much more accurate then the LEGO speed computer. the data is written to a log file on the NXT. The software is written in NXC. Go to my web site for more info: http://www.techbricks.nl/My-NXT-projects/nxttachometerspeedcomputer.html

Category:

Education

Tags:

• NXT
• LEGO
• Mindstorms
• RCX
• rotation
• rpm
• revolutions
• per
• minute
• rotations
• speed
• computer
• LPE
• engine
• sensor
• legacy
• techbricks
• techbricks.nl
• www.techbricks.nl
• motor
• pneumatic
• tacho
• tachometer
• csv
• digits
• log
• file
• NXC
• diagram
• graph
• cycle
• gear
• gears
• gearing
• compressor
• air

[SpeedyGonZohan]

Very cool!

[heinzelmaennchen312]

this is great!

but i have a problem. i downloaded the file for the mindstorm motor and put it on my nxt, but the large digits are not displayed.

do i may need nxt 2.0 for thisor is there another problem?

[xoEmilyTheStrange]

lego nerd