User Manual

Table Of Contents
Connecting SSI Sensors
Advanced Digital Motor Controller User Manual 55
Connecting Sensors to Pulse Inputs
The controller has several pulse inputs capable of capturing Pulse Length, Duty Cycle or
Frequency with excellent precision. Being a digital signal, pulses are also immune to noise
compared to analog inputs.
Important Notice
On newer motor controllers models, activating the pulse mode on input will also
enable a pull up resistor on that input. If the input is also used for analog capture,
the analog reading will be wrong.
Connecting to RC Radios
The pulse inputs are designed to allow direct connection to an RC radio without additional
components.
Controller
Power
Optional
Power
to
Radio
R/C Radio
R/C Channel 1
R/C Channel 2
R/C Radio Ground
Controller
Ground
5V Out
MCU
FIGURE 3-15. RC Radio powered by controller electrical diagram
Connecting to PWM Joysticks and Position Sensors
The controller’s pulse inputs can also be used to connect to sensors with PWM outputs.
These sensors provide excellent noise immunity and precision. When using PWM sen-
sors, configure the pulse input in Duty Cycle mode. Beware that the sensor should always
be pulsing and never output a steady DC voltage at its ends. The absence of pulses is con-
sidered by the controller as a loss of signal.
Connecting SSI Sensors
SSI Sensors Overview
SSI sensors are absolute encoders that send their data using Synchronous Serial Interface
(SSI). Using SSI protocol offers reduced wiring and EMI immunity. SSI sensors as abso-
lute encoders they report a signal respective to the shaft position and can be used in both
multi-turn and single-turn applications. Roboteq controllers support the use of SSI sensors
with resolution up to 16 bits.