Connections - Micron Radio Control MR603a Quick Start Manual

Connections

MR603 has solder pads for:
power input (positive & negative battery)
motor output
3.3V from the on-board regulator which can supply a max of 200mA
an additional battery negative connection (0V) - useful for wiring LEDs to P pads
L: used to monitor battery voltage when a booster module is used, e.g. to raise a single LiPo cell
to 12V.
P1..P6: these are logic level outputs, 0V when off and 3.3V when on; they can be configured for
on/off switching or to output a servo signal; P5 and P6 are at the opposite end of the board to the
battery and motor pads, a 4 pin JST-SH socket may optional be fitted to carry these P outputs
plus 0V and 3.3V
F1..F4: these are FET switches capable of up to 2A; they are open circuit when off and connected
to battery negative when on; a load should be wired between the F pad and battery positive, or
the 3.3V pad for low current loads; labelled A..E on the receiver board and numbered 7..10 for
programming
The simplest use of MR603 requires connection to a battery (via an on/off switch and resettable fuse)
and to your loco/vehicle motor.
LEDs on P pads should be connected between the pad and battery negative (0V) with a series resistor
appropriate to the required brightness.
Other connection diagrams (e.g. high current lights, sound card triggers) are available on the Micron
MR603 web page.
Take care when soldering wires to P1..P4 and F1..F4 (A..E) as the pads are very close the radio sub-
board. The recommended technique is to fill the pad hole with solder and then attach the wire to the
top of the pad on the side opposite to the radio board - i.e. don't pass the wire through the pad hole.
Micron R/C, www.micronradiocontrol.co.uk, +44 (0)1653 696008 Micron MR603a Quick Start Guide : 2 of 2