BakeBit - Button

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Introduction

Button
  • The BakeBit - Button is an instant button module and it is used to detect button events. When the button is released the module goes back to its default state.
  • If the button is not pressed the module will output high otherwise it will output low.

Hardware Spec

  • Standard 2.0mm pitch 4-Pin BakeBit interface
  • Digital output
  • PCB dimension(mm): 20 x 24

BakeBit - Button.PCB

  • Pin Description:
Pin Description
GND Ground
5V Supply Voltage 5V
NC Not Connected
SIG Signal

Code Sample: Button And Buzzer

A BakeBit - Buzzer module is needed in this test case.

Hardware Setup

Connect the buzzer module to the NanoHat Hub's D3 and the button module to the NanoHat Hub's D4:

Button And Buzzer-1.jpg Button And Buzzer-2.jpg

Source Code

import bakebit
import time
# Connect the BakeBit Ultrasonic Ranger to digital port D4
# SIG,NC,VCC,GND
ultrasonic_ranger = 4
 
# Connect the BakeBit LED to digital port D3
led = 3                                                                      
 
bakebit.pinMode(led,"OUTPUT")
light = 0
 
while True:
    try:
        # Read distance value from Ultrasonic
	distance = bakebit.ultrasonicRead(ultrasonic_ranger)
        print(distance)
	if distance > 0:
		if distance<10: 
			if light == 0:
				print("\ton")
				bakebit.digitalWrite(led,1)
				light = 1
		else:
			if light == 1:
				print("\toff")
				bakebit.digitalWrite(led,0)
				light = 0
	time.sleep(.2)
 
    except KeyboardInterrupt:
	bakebit.digitalWrite(led,0)
        break
 
    except TypeError:
        print ("Error")
    except IOError:
        print ("Error")

Github

Run Code Sample

Before you run the code sample you need to follow the steps in bakebit tutorial to install the BakeBit package.
Enter the "BakeBit/Software/Python" directory and run the "bakebit_prj_Button_And_Buzzer.py" program:

cd ~/BakeBit/Software/Python
sudo python bakebit_prj_Button_And_Buzzer.py

Observation

When users press the button the buzzer will beep. When the button is released the buzzer will be silent.

Resources

Update Log

December-12-2016

  • Released English version

Jan-19-2017

  • Renamed "NEO-Hub" to "NanoHat-Hub"

Jan-20-2017

  • Renamed "NanoHat-Hub" to "NanoHat Hub"