49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
# SPDX-FileCopyrightText: 2021 Brent Rubell for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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"""
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'thermometer.py'.
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=================================================
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digital thermometer project using a tmp36 and a character lcd!
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requires:
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- simpleio
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- CircuitPython_CharLCD Module
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"""
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import time
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import digitalio
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import analogio
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import adafruit_character_lcd
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from simpleio import map_range
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from board import D7, D8, D9, D10, D11, D12, D13, A0
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# Character LCD Config:
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# modify this if you have a different sized charlcd
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lcd_columns = 16
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lcd_rows = 2
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# Metro Express Pin Config:
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lcd_rs = digitalio.DigitalInOut(D7)
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lcd_en = digitalio.DigitalInOut(D8)
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lcd_d7 = digitalio.DigitalInOut(D12)
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lcd_d6 = digitalio.DigitalInOut(D11)
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lcd_d5 = digitalio.DigitalInOut(D10)
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lcd_d4 = digitalio.DigitalInOut(D9)
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lcd_backlight = digitalio.DigitalInOut(D13)
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# Init the lcd class
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lcd = adafruit_character_lcd.Character_LCD(
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lcd_rs, lcd_en, lcd_d4, lcd_d5, lcd_d6, lcd_d7, lcd_columns, lcd_rows, lcd_backlight
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)
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therm = analogio.AnalogIn(A0)
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while True:
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# get temperature from sensor
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tmp = ((map_range(therm.value, 0, 65535, 0, 3.3)) - 0.5) * 100
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lcd.clear()
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lcd.message("temp: " + str(tmp)[:5] + " * c")
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time.sleep(0.6)
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