Connecting the NerdSense Mk.1
NerdSense Specifications
- Size: 62 mm x 21 mm x 6 mm
- Weight: 5g (with no additional plugs or wires)
- Power Supply: +3.3V DC
- Voltage Sensor Range: 0V to 25.5V DC
- Current Sensor Range: 0A to 100A DC
- Voltage range at RSSI input: 0V to 3.3V DC mode, 0V to 5V PWM mode
Getting this setup is easy; simply connect the sensor as shown below and the NerdCam3D’s in-built OSD will becomes activated once the camera is powered on. Use either PWM-RSSI or DC-RSSI raw signals from different RC-receivers with user-defined 0% and 100% RSSI thresholds. If RSSI is not necessary for your application, simply deactivate it with the sensor’s on-board controls. Enjoy integrated RSSI signal conditioning with RC-filtering and user-defined amplification.
The NerdSense Mk.1 is compatible with any firmware of the NerdCam3D but the number of variables present will depend on the firmware version currently being used. This table summarises what variables you will see when using different firmware versions.
Datasheets and Instruction Manual:
Additional Notes
General Notice for DC-RSSI Signals
The RC-receiver’s output voltage for 0% RSSI must be lower than the voltage corresponding to 100% RSSI. Please note the permitted voltage range of 0V to 3.3V DC at the RSSI input of the sensor in DC-RSSI mode.
General Notice for For PWM-RSSI Signals
The pulse width of the RC-receiver’s RSSI signal for 0% RSSI must be lower than the corresponding pulse width for 100% RSSI. Please note the maximum PWM signal magnitude of 5V DC at the RSSI input of the sensor in PWM-RSSI mode.
Special Notice on EzUHF RC-Receivers
EzUHF receivers provide both RSSI and Link Quality (LQ) signals, both as PWM-signals. Unfortunately only the LQ signal is compliant with the corresponding general notice. There are additional 3rd-party devices available which convert EzUHF’s inverted RSSI raw signal into a DC-RSSI signal, such as this product
Special Notice on Futaba® FASST™ RC-Receivers
The tapping of the RSSI signal from Futuba® FASST™ receivers has been described elsewhere, you only need to attach the wires as described in Flytron’s blog on the RC-receiver. The mentioned SMD RC-filter is not necessary, as the NerdSense provides its own. Connect this raw signal to the RSSI-input of the NerdSense and don’t forget to put it into PWM-mode. Then proceed with the RSSI calibration as outlined in the manual.