The MX019 is a programmable Digital Tachometer that can measure from 100 to 60,000 revolutions per minute (RPM). The RPM is displayed on a 5 digit LED readout.
A high and a low RPM point can be programmed using buttons on the digital tachometer. When the rotating device goes below the low point or above the high point, a trigger output goes high (approx. 4.4 volts). The trigger output of the digital tachometer can be used to control another device.
A Normal speed can be programmed on the digital tachometer. This will turn off the trigger output when the RPM of the rotating device reaches the normal setting (withing 100 RPM).
The digital tachometer is based on the PIC16C56A microcontroller. This allows the possibility of developing software to customize the operation of the digital tachometer. Reprogramming is however not supported by the manufacturer and source code is not provided. A schematic is included with the digital tachometer which would aid with any development work around this module.
To use the infrared sensor with the digital tachometer, a reflective spot needs to be attached to the rotating surface to be measured. If the rotating surface is shiny, then a dark area needs to be marked out.
A user supplied sensor can be attached to the digital tachometer. The sensor must provide a TTL level digital output to the digital tachometer. Jumper J1 on the digital tachometer needs to be set to the INPUT position when a user supplied sensor is used.
Recommended AC/DC Adapter: RP-9500 (see related items below).
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