microbit playground and Edublocks: Controlling the servo

Using the brilliant Edublocks specifically to microbit (https://microbit.edublocks.org/ ) I have been playing with a 4tronix Microbit playground. Previously I played with getting the turning a potentiometer to selected which neopixel light up, in this post the potentiometer is used to control the direction of the servo motor.

Below is the block code in Edublocks used to do this.


Set up use the Potentiometer attached to Pin1 to control the direction of a servo motor on pin2. 

The potentiometer output is turned into values between 0 (or 5 when I checked) and 1023; it is then divided, using the Floor operation (//, returns the integer part of a division), by 8 to decrease the sensitivity of turning the potentiometer. These values allow both clockwise and anticlockwise turning of the servo to based on the full range of the potentiometer. The line pin2.set_analog_period(20) was based on experimentation in a previous post.

The text-based version of the python code is shown below

np = None
pot1 = None
pot2 = None


from microbit import *
pin2.set_analog_period(20)
while True:
  pot1 = pin1.read_analog()
  pot2 = pot1//8
  pin2.write_analog(pot2)



All opinions in this blog are the Author's and should not in any way be seen as reflecting the views of any organisation the Author has any association with. Twitter @scottturneruon

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