Introduction
Raspberry Pi Foundation have launched a new product, Raspberry Pi 4 Model B on 24th June 2019. There have many major improvement and one of them, it is support dual HDMI monitor with 4K resolution. However, if you don’t want to use monitor, you still can remote Raspberry Pi 4 using Maker pHAT.
Please refer to the following tutorial first:
- For Maker pHAT Rev1.0 – Getting Started with Maker pHAT
- For Maker pHAT Rev1.1 – Maker pHAT User’s Manual
Video
This video will show you how to remote Raspberry Pi 4 (with Raspbian Buster) Using Maker pHAT.
Hardware Preparation
This is the list of items used in the video.
Sample Program
This is the sample code for Maker pHAT.
| from gpiozero import LED, Button, Buzzer | |
| from time import sleep | |
| import os | |
| LED1 = LED(17) | |
| LED2 = LED(18) | |
| LED3 = LED(27) | |
| LED4 = LED(22) | |
| LED5 = LED(25) | |
| LED6 = LED(12) | |
| LED7 = LED(13) | |
| LED8 = LED(19) | |
| SW1 = Button(21) | |
| SW2 = Button(16) | |
| SW3 = Button(20) | |
| BUZZER = Buzzer(26) | |
| NONE = 0 | |
| DECREASE = 1 | |
| INCREASE = 2 | |
| ALL_OFF = 9 | |
| ALL_ON = 10 | |
| def beep(times, sec): | |
| for x in range(times): | |
| BUZZER.on() | |
| sleep(sec) | |
| BUZZER.off() | |
| sleep(sec) | |
| def led(ledNumber): | |
| if ledNumber == 1: | |
| LED1.on() | |
| else: | |
| LED1.off() | |
| if ledNumber == 2: | |
| LED2.on() | |
| else: | |
| LED2.off() | |
| if ledNumber == 3: | |
| LED3.on() | |
| else: | |
| LED3.off() | |
| if ledNumber == 4: | |
| LED4.on() | |
| else: | |
| LED4.off() | |
| if ledNumber == 5: | |
| LED5.on() | |
| else: | |
| LED5.off() | |
| if ledNumber == 6: | |
| LED6.on() | |
| else: | |
| LED6.off() | |
| if ledNumber == 7: | |
| LED7.on() | |
| else: | |
| LED7.off() | |
| if ledNumber == 8: | |
| LED8.on() | |
| else: | |
| LED8.off() | |
| if ledNumber == ALL_OFF: | |
| LED1.off() | |
| LED2.off() | |
| LED3.off() | |
| LED4.off() | |
| LED5.off() | |
| LED6.off() | |
| LED7.off() | |
| LED8.off() | |
| elif ledNumber == ALL_ON: | |
| LED1.on() | |
| LED2.on() | |
| LED3.on() | |
| LED4.on() | |
| LED5.on() | |
| LED6.on() | |
| LED7.on() | |
| LED8.on() | |
| mode = NONE | |
| ledPosition = 0 | |
| led(ALL_ON) | |
| beep(1, 0.1) | |
| led(ALL_OFF) | |
| try: | |
| while True: | |
| if SW1.is_pressed and mode != DECREASE: | |
| beep(2, 0.07) | |
| mode = DECREASE | |
| elif SW2.is_pressed and SW3.is_pressed: | |
| sleep(0.5) | |
| for loop in range(3): | |
| led(ALL_ON) | |
| BUZZER.on() | |
| sleep(0.2) | |
| led(ALL_OFF) | |
| BUZZER.off() | |
| sleep(0.2) | |
| sleep(1) | |
| os.system("sudo shutdown -h now") | |
| elif SW2.is_pressed and mode != INCREASE: | |
| beep(2, 0.07) | |
| mode = INCREASE | |
| elif SW3.is_pressed and mode != NONE: | |
| beep(1, 0.07) | |
| mode = NONE | |
| if mode == INCREASE: | |
| if ledPosition < 8: | |
| ledPosition = ledPosition + 1 | |
| else: | |
| ledPosition = 0 | |
| elif mode == DECREASE: | |
| if ledPosition > 0: | |
| ledPosition = ledPosition – 1 | |
| else: | |
| ledPosition = 8 | |
| led(ledPosition) | |
| sleep(0.05) | |
| except KeyboardInterrupt: | |
| led(ALL_OFF) |
Thank You
References:
Thanks for reading this tutorial. If you have any technical inquiry, please post at Cytron Technical Forum.
