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[Let'sDo第3期]    DIY一个电子测光表       2 过程贴

主板资料:

1、https://www.adafruit.com/product/5691

2、https://learn.adafruit.com/esp32-s3-reverse-tft-feather

刷固件：

从官网下载Adafruit ESP32-S3主控板固件：https://circuitpython.org/board/adafruit_feather_esp32s3_reverse_tft

测试程序：

1）呼吸灯

import board
import time
from digitalio import DigitalInOut, Direction, Pull
led = DigitalInOut(board.LED)
led.direction = Direction.OUTPUT
while True:
    led.value = True
    time.sleep(0.5)
    led.value = False
time.sleep(0.5)

2）点亮屏幕

import board
import terminalio
from adafruit_display_text import label
text = "Hello world"
text_area = label.Label(terminalio.FONT, text=text)
text_area.x = 10
text_area.y = 10
board.DISPLAY.root_group = text_area
while True:
  Pass

3）转舵机

import time
import board
import pwmio
from adafruit_motor import servo
# create a PWMOut object on Pin D5.
pwm = pwmio.PWMOut(board.D5, duty_cycle=2 ** 15, frequency=50)
# Create a servo object, my_servo.
my_servo = servo.Servo(pwm)
while True:
    for angle in range(0, 180, 1):  # 0 - 180 degrees, 5 degrees at a time.
        my_servo.angle = angle
        time.sleep(0.01)
    for angle in range(180, 0, -1): # 180 - 0 degrees, 5 degrees at a time.
        my_servo.angle = angle
        time.sleep(0.01)

4）测光照

import time
import board
import adafruit_bh1750
i2c = board.I2C()
sensor = adafruit_bh1750.BH1750(i2c)
while True:
    print("%.2f Lux"%sensor.lux)
    time.sleep(1)

GIT其他示例资料:

点灯示例

https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/CircuitPython_Essentials/CircuitPython_Digital_In_Out/code.py

屏幕示例

https://github.com/adafruit/Adafruit_CircuitPython_Display_Text (显示库)

https://learn.adafruit.com/esp32-s3-reverse-tft-feather/displayio-example

光照示例

https://github.com/adafruit/Adafruit_CircuitPython_BH1750

舵机示例

https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/CircuitPython_Essentials/CircuitPython_Servo/code.py

https://github.com/adafruit/Adafruit_CircuitPython_Motor  (舵机库)