19. Octopus Analog Voltage Divider Brick OBVoltage(EF04039)
The Voltage Divider can detect the supply voltage upto 50V and is based on resistor(1K and 15K Precision resistors).
The voltage detection module allows the input voltage to reduce 16 times. As the micro:bit analog input voltage is 3.3V, so voltage detection module’s input voltage can not be greater than the 3.3Vx16 = 52.8V. Because of the micro:bit’s 10 bit ADC, that means sampling resolution are 0.003225V（3.3V / 1023）.So the module’s minimum input voltage is 0.00489Vx3.3=0.01064V.
Tips: All of Octopus bricks have supported Scratch programming.
|Input Voltage（DC）||Utmost: 50V，Lowest: 0.01064V|
|Detection Scope||Upto 50V|
19.4. Outlook and Dimensions
19.5. Quick to Start
Materials used and connection diagram
Connect to the P1 port as the picture shows
Take sensor:bit for example
Program as the picture shows
You can also download the links below:
The current voltage is showing on the micro:bit.