Do-It-Yourself Design DC Motor Control Using an SN754410
The circuit design that will be described in the following article may help you in diy designing control direction and speed of up to two motors using SN754410 half-H driver IC
DIY Install John Deere Radar Speed Sensor System
The following picture demonstrates John Deere radar speed sensor installation with Dickey John Radar. This installation type is for 1990 or later model vehicles with factory equipped radar.
Watson-Marlow 504U/RL Tachometer Output
If you need to indicate your Watson-Marlow 504U/RL tachometer motor speed output or total the number of motor revolutions, the following picture might help you.
How to DIY Fix Tachometer Solder Joints of Mazda RX-7′s
If you find that your RX7′s tachometer performed a bouncing needle, the following article may give you insight in diy repairing your Mazda RX7′s tacho.
Car Tachometer Using Philips NE555 IC Timer
The following picture circuit a car tachometer using NE555 Timer IC from Philips Semiconductor.