Review on ELING Waterproof Tachometer 0 3000RPM Backlight by Brian Thao

I've been suffering with this wheelbarrow for a month - it still shows intermittent highs. Just too sensitive to coil noise. I tried resistors in the signal line - experimented - calmed down but didn't cure. 2 different speedometer signal filters - no improvement. I finally found a Schmidt-triggered device that converts the coil signal to a square wave - mostly read correctly, but then jumped back up :( I ended up buying a much more expensive Touch - it worked right out of the box.