GB Sound module MSM-1
18.01.2024 BEIER-Electronic 28
The series resistors required for the LEDs depend on the LED colors and the LED
current. For orientation purposes, here is a table with series resistors for standard
LEDs (current approx. 15 mA) as a rough guide:
There are also LED series resistor calculators on the Internet (e.g
www.leds.de/widersrechner), with which the ideal resistance can be calculated
quickly and easily.
Connection of the data cable K-USB-2:
The data cable K-USB-2 is connected to connector X11. The brown wire of the servo
cable points towards the edge of the board.
The sound module is not supplied with voltage via the data cable. If the data cable is
to be used, the MSM-1 must be supplied with voltage via the battery as normal.
The data cable is currently not working. It may be possible to use this later to carry
out firmware updates or live diagnostics.
Connecting an IR transmitter diode:
As an alternative to the data cable, an IR transmitter diode can also be connected to
X11 to transmit the states of the 8 outputs to the IR light modules LM-IR-8-1 and LM-
IR-16-4.
However, at LM-IR-16-4 only outputs 1 – 8 and servo output 1 can be controlled on
the light module. It is not possible to control outputs 9 - 16, servo outputs 2 - 4 or the
motor output of the light module LM-IR-16-4 with the MSM-1!
General information about wiring in the model:
Cables with a cross section of at least 0.75 mm² should be used to connect the
supply voltage. For all other connections, thinner cables of 0.14 mm² to 0.5 mm² are
sufficient.
It is also important to ensure that cables are laid as “cleanly” as possible, i.e. to use
short cables and not to lay unnecessary loops.
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