Morse Code - SOS

from machine import Pin from time import sleep # the message to send in morse-code messages = ["sos sos sos sos sos sos"] #timing for encoding beatLen = 0.15 #length of dits and dahs ditLen = beatLen * 1 dahLen = beatLen * 3 #assign the signal lamp pin and amke sure its off signalLamp = Pin(15, Pin.OUT) signalLamp.off() #according to stories I've heard... hellNotFrozen = True #table to transform readable letters into morse code code = {'A':'.-', 'B':'-...', 'C':'-.-.', 'D':'-..', 'E':'.', 'F':'..-.', 'G':'--.', 'H':'....', 'I':'..', 'J':'.---', 'K':'-.-', 'L':'.-..', 'M':'--', 'N':'-.', 'O':'---', 'P':'.--.', 'Q':'--.-', 'R':'.-.', 'S':'...', 'T':'-', 'U':'..-', 'V':'...-', 'W':'.--', 'X':'-..-', 'Y':'-.--', 'Z':'--..', '1':'.----', '2':'..---', '3':'...--', '4':'....-', '5':'.....', '6':'-....', '7':'--...', '8':'---..', '9':'----.', '0':'-----', ', ':'--..--', '.':'.-.-.-', '?':'..--..', '/':'-..-.', '-':'-....-', '(':'-.--.', ')':'-.--.-'} while hellNotFrozen: #loop through the list of messages for message in messages: # more code only has uppercase message = message.upper().strip() #loop through each character in the message for xmitChr in message: print(xmitChr, end = '') # show off the character on if xmitChr == ' ': # space means end of word # end of word - wait 4 more beats (7 total) sleep(beatLen * 4) else:# encode a character #loop through the ditdah code for this character for ditDah in code[xmitChr]: #turn the signal lamp on and count beats signalLamp.on() if ditDah == ".": sleep(ditLen) else: sleep(dahLen) # turn off signal lamp and 1 beat pause between signalLamp.off() sleep(beatLen) # end of character - wait for 2 more beats (3 in total) sleep(beatLen * 2) #end of message - wait 4 more beats (7 in total) sleep(beatLen * 4) print() #https://www.youtube.com/watch?v=cCSYFUeO-CU Observe the video for 'short short short', 'long long long', 'short short short'

Control an LED through Wi-Fi with a Raspberry Pi PICO W

import network import socket import time import secret1 from machine import Pin led = Pin(15, Pin.OUT) ssid = secret1.SSID password = secret1.PASSWORD wlan = network.WLAN(network.STA_IF) wlan.active(True) wlan.connect(ssid, password) html = """

LED Status Indicator

%s

""" # Wait for connect or fail max_wait = 10 while max_wait > 0: if wlan.status() < 0 or wlan.status() >= 3: break max_wait -= 1 print('waiting for connection...') time.sleep(1) # Handle connection error if wlan.status() != 3: raise RuntimeError('network connection failed') else: print('connected') status = wlan.ifconfig() print( 'ip = ' + status[0] ) # Open socket addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1] s = socket.socket() s.bind(addr) s.listen(1) print('listening on', addr) # Listen for connections while True: try: cl, addr = s.accept() print('client connected from', addr) request = cl.recv(1024) print(request) request = str(request) led_on = request.find('/light/on') led_off = request.find('/light/off') print( 'led on = ' + str(led_on)) print( 'led off = ' + str(led_off)) if led_on == 6: print("led on") led.value(1) stateis = "LED is ON" if led_off == 6: print("led off") led.value(0) stateis = "LED is OFF" response = html % stateis cl.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n') cl.send(response) cl.close() except OSError as e: cl.close() print('connection closed') #https://www.youtube.com/watch?v=51m7umIEjd4

Traffic Light Controller with Raspberry Pi Pico & MicroPython

from machine import Pin from time import sleep import tm1637 tm = tm1637.TM1637(clk=Pin(4), dio=Pin(5)) Led_R = Pin(0, Pin.OUT) Led_Y = Pin(1, Pin.OUT) Led_G = Pin(2, Pin.OUT) while True: num = 30 Led_R.value(1) for i in range(30): num=num-1 tm.number(num) sleep(1) Led_R.value(0) for i in range(5): Led_Y.value(1) sleep(0.3) Led_Y.value(0) sleep(0.3) Led_G.value(1) sleep(10) Led_G.value(0) #https://how2electronics.com/traffic-light-controller-with-raspberry-pi-p

Feb05 Display time and date using f-string

#Libraries from machine import Pin, I2C #,RTC , WDT from ssd1306 import SSD1306_I2C import utime #set up WIDTH =128 HEIGHT= 64 i2c=I2C(0,scl=Pin(17),sda=Pin(16),freq=200000) oled = SSD1306_I2C(WIDTH,HEIGHT,i2c) week=["Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"] while True: #time.sleep(1) date_time_now = utime.time() date_time_now=utime.localtime(date_time_now) print(date_time_now) #date_time_now is in this tuple format #(2022, 12, 15, 14, 54, 27, 3, 349) # 0 1 2 3 4 5 6 7 #local_date_time=str(date_time_now[3]) + ':' + str(date_time_now[4]) + ':' + str(date_time_now[5]) local_year_day=f"{date_time_now[0]}/{date_time_now[1]:02}/{date_time_now[2]:02}" print(local_year_day) local_date_time=f"{date_time_now[3]:02}:{date_time_now[4]:02}:{date_time_now[5]:02}" print(local_date_time) local_wk_day=f"{week[date_time_now[6]]}" print(local_wk_day) #display in ssd1306 oled.fill(0) #clear display oled.text("Today's date is ",0,0) oled.text(local_year_day, 0, 14) oled.text(local_wk_day,0,28) oled.text("Current time is ", 0,42) oled.text(local_date_time, 0, 56) oled.show() utime.sleep(5)