3.3 Curiosity Nano Explorer

The Curiosity Nano Explorer allows users to explore and experiment with the microcontroller peripherals of their Curiosity Nano development board. The board supports basic Power Monitoring by an embedded PAC1944 device. The board has four power domains, all of which can be visualized in the Data Visualizer. When connected to the PC, the board is listed in the left pane under Connections. The Power Monitor data source section allows selecting active channels, and lists the data points sampled for each channel.

Power Monitor

The PAC1944 power monitor on the Curiosity Nano Explorer enables power measurement on three of the board’s power domains.

Channels 1 and 4 monitor the CNANO P3V3 domain, providing:
- Channel 1: High-accuracy, low-range measurements.
- Channel 4: Lower-accuracy, higher-range measurements.
Channel 2 monitors the peripherals P3V3 domain.
Channel 3 monitors the peripherals P5V0 domain.

For detailed specifications including current sense range and resolution, refer to the Power Monitor section in the Curiosity Nano Explorer User Guide.

Important: If a kit mounted on the Explorer board is configured to be a host (master) on the I²C bus, ensure the I²C slide switch S500 is set to NC to isolate the USB bridge and power monitor from the main I²C bus.

Table 3-7. Power Monitor Settings
Field Name	Values	Usage
Enable 8x Average	Unchecked, checked	Use a rolling 8x average on the data from the Power Monitor. Applies uniformly to current, voltage and power, for all 4 channels. The average is performed on the Power Monitor hardware, which has a sample rate independent of the rate of the data polled and displayed in the Data Visualizer.
Enable Channel N	Unchecked, checked	Enable channel number N on the Power Monitor. Disabled channels will not be read from the hardware and will reduce consumed resources. At least one channel must be enabled.