19. Octopus Analog Voltage Divider Brick OBVoltage(EF04039)

19.1. Introduction

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

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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

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19.5. Quick to Start

Materials used and connection diagram

Connect to the P1 port as the picture shows

Take sensor:bit for example

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Add Package

Program as the picture shows

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Reference

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

You can also download the links below:

Result

The current voltage is showing on the micro:bit.

19.6. Relevant Cases

19.7. Technique Files