19. Octopus Analog Voltage Divider Brick OBVoltage

19.1. Introduction

The Voltage Divider can detect the supply voltage upto 50V and is based on resistor(1K and 15K Precision resistors).


19.2. Characteristics

  • 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.

19.3. Specifications

Item | Parameter :-: | :-: SKU|EF04039 Type|Analog 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


Add Package

Program as the picture shows



Links: https://makecode.microbit.org/_AXD2gM3J36Jz

You can also download the links below:



  • The current voltage is showing on the micro:bit.

19.6. Relevant Cases

19.7. Technique Files