MegaPoints servo controller Revision 24 April 2016
www.loolee.org Page: 12
defaults and master/slave mode to master. The default slave address of 2 is reconfigured. This will
also reset servo travel range back to the centre. You will have to individually set the range of travel
for each set of points again.
Expansion
The following table lists the expansion options for the MegaPoints Servo Controller.
Links two MegaPoints Servo Controllers together
eliminating interlock mechanisms.
Remote controller
(Mimic Panel)
Reduces cabling to three wires for control panels.
Allows multiple control panels to operate the units.
Provides LED panel feedback on points settings.
Allows the linking of up to 16 MegaPoints Servo
Controllers.
Expands to 192 switches for points control.
Expands the memory capability to 192.
Adds routing functionality.
Hooks up the MegaPoints Servo Controller to the
DCC bus.
Adds up to 24 routes to your layout.
Can drive 1 – 12 relays on the servo outputs.
Using high power or digital servos
The MegaPoints Servo Controller is designed to use low cost 9 gram analogue servos. These offer an
excellent performance at their price point and are absolutely fit for purpose. There are extreme use
cases where it is required to deviate from the recommended servo range. Possible reasons may
include:
Using digital servos to eliminate the switch on kick when power is applied because the
device being operated is too delicate or small to tolerate the movement.
Using waterproof servos in an all weather installation such as in a garden.
Using high torque servos for a larger or non model railway application.
There is no use case for improving resolution with an expensive digital servo. You are more likely to
experience the opposite as the microcontroller may jitter by as much as 8 µsec as stated in its data
sheet so plan and test carefully when deviating (or contact me for advice).
External high power voltage regulator
Provision has been made to bypass the internal voltage regulator on the MegaPoints Servo
Controller and connect an external switching regulator that can offer up to 3.5 Amps current
capacity (over six times more than the built in regulator) by using the high current voltage regulator
available from out web site.
See the separate MegaPoints Servo Controller Relay Guide documentation for wiring details,
available from the web site (www.loolee.org).
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