Time: Less than 10 minutes
From scrap: ░░░░░░░░░░ 0%
One day before my next project I dumped on the table all of my motors and realized that I can not "approximately" choose from the fastest of them. After thinking for a few minutes, I found a great way to do this without the use of any special tools.
- Duct tape
- Step 3
Download and install Audacity, here is a link to sourceforge
- Step 8
Where the chart has big crests, click, hold down the Ctrl key and spin the mouse wheel to zoom the chart.The chart clearly visible oscillation periods. Yes, it is the individual elements of what we heard "z-z-z-z-z-z"
- Step 10
Analysis. Duration - the time (in seconds) for which the engine makes one turn. To find the rpm, it is necessary to divide 60 on duration, in other words:
And yet I know that this motor with this power supply produces 6000 rpm =)
How to measure rpm of a motor
- I believe that this method is accurate enough
- If the engine itself is noisy, it may complicate the task