Receiver installation
To control the MICROBEAST PLUS you have the opportunity to use different receiver types. Basically it is distinguished between (conventional) „Standard“ receivers and „Single-Line“ (or „sum signal“) receivers.
Standard receivers
A standard receiver is a receiver that is connected to MICROBEAST PLUS by using the single servo outputs of the receiver and connect them to the five control channels of MICROBEAST PLUS. The channel which determines the controlled function simply is selected by inserting each plug to the correct output at the receiver.
The designation Spektrum/Futaba is only exemplary. You can use any radio system with at least 6 output channels to connect to MICROBEAST PLUS. For finding out how to connect the wires to MICROBEAST PLUS have a look at your radio's servo monitor and refer to the radio's instruction manual.
Ensure a tight fit of the connectors. The pin board of MICROBEAST PLUS is designed so that the plugs firmly clamp each other when they are fully inserted. Anyhow, especially when using a single-line receiver, it is possible that connectors are plugged in with no adjacent neighbors. Such plugs should additionally be secured against loosening.
Single-Line receivers
With a single-line receiver all channels (control functions) are transmitted by one single connection line to MICROBEAST PLUS. This is done by packing all channel output data to a digital data paket or by chaining the servo signals to one output port. Because of this, it is not possible here to assign functions by inserting the appropriate plugs in the receiver. Instead you have to assign the function ordering by software in the MICROBEAST PLUS receiver setup menu, so that the unit "knows" what control function each incoming channel is used for.
There are single-line receivers available that supply additional single channel connectors/servo outputs similar to a standard receiver. In combination with MICROBEAST PLUS you only have to treat such receivers as single-line receivers if you really use the single-line function. If you connect the receiver by using the standard 5-plug layout, such receiver has to be considered as "standard" receiver in the following and as shown above.
In general the single-line connection wire is plugged into the [DI1] input of MICROBEAST PLUS. When using the signal of a single Spektrum remote satellite you must connect the optional available Spektrum satellite adapter (Order Nr. BXA76009) in between, in order to supply the remote satellite with the correct voltage level (figure 3).
The throttle servo or ESC is connected to the [CH5] output. When using a speed controller with BEC, from here the power will be distributed to receiver and servos. Alternatively or additionally you can connect a power supply/second BEC wire/buffering battery to the [SYS] port. Note that all plus and minus connectors are bridged on the MICROBEAST PLUS. Only at the triple input/output [AUX|PIT|RUD] you musn't connect any power source as this is not part of the power rail! When using a big heli with standard size servos it may be insufficient to only provide power at the [SYS] port! If there are no other ports left to feed in power, we highly recommend using the MICROBEAST PLUS HD with separate high power input.
Using a single-line receiver with additional servo output ports you can choose between connecting throttle servo/ESC and additional devices to MICROBEAST PLUS (figure 1) or directly to the receiver (figure 2). But note that when connecting the power supply at the receiver, MICROBEAST PLUS and the servos will only be supplied over the small single-line connection. Especially on big helis with standard size servos this might not be sufficient! Here it is mandatory to connect some supply lines in parallel to other free ports, such as [SYS] or [CH5] or better connect the power supply (i.e. ESC with BEC supply) directly to the MICROBEAST PLUS as shown in figure 1.
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Figure 1 - Typical wiring layout for single-line receivers -
Figure 2 - Alternative wiring layout for single-line receiver with additional servo output channels -
Figure 3 - Spektrum remote satellite connection with power adapter
