Need help: JRT laser distance sensor and arduino

[johnwasser]

This post from April 2021 has a manual for the JRT model M88 rangefinder. Maybe the model BA6A uses the same protocol.

JRT Laser distance / range finder UART programming problem

Im trying to connect a JRT M88 laser distance sensor to a Mega. I have it wired to the serial1 (19RX, and 18TX) pins. Both the RX and TX lines go through a Sparkfun bidirectional Logic level shifter from 5vt to 3.3 vt. The laser is powered via the Mega 3 vt pin To operate the sensor it needs to be turned on....{0x55}; and a measurement type sent....i.e shotslow {0xAA, 0x00, 0x00, 0x20, 0x00, 0x01, 0x00, 0x01, 0x22} Note there is also a code called...... rdmres[] = {0xAA, 0x80, 0x00, 0x22, …