Pololu 3.3V 3.7A Step-Down Voltage Regulator D30V30F3 _MAKE_TOOLS GPIO15 and GPIO18 are connected

GPIO15 and GPIO18 are connected to DIO0 – DIO2 respectively of the RFM95W

4kSPS Max sampling rate

Breakout UART control pins to connect with host boards like Arduino

it is compatible with Micro USB so that direct programming and testing is no longer a headache

there is a battery holder included that is compatible with 3x 18650 AA Li-ion batteries (batteries not included)

Pololu 3.3V 3.7A Step-Down Voltage Regulator D30V30F3 _MAKE_TOOLS GPIO15 and GPIO18 are connectedThe Pololu D30V3x line of synchronous buck (step down) voltage regulators generates lower output voltages from input voltages as high as 45V. They are switching regulators (also called switched mode power supplies (SMPS) or DC to DC converters), which makes them much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. This particular model (D30V30F3) takes an input of 3. 3V to