Merge pull request adafruit#1041 from ladyada/master

circuit Stonks & Plenbit demo

Author: ladyada

CLUE_plenbit_demo/code.py

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+import busio
+import board
+from digitalio import DigitalInOut, Direction
+from adafruit_pca9685 import PCA9685
+from adafruit_motor import servo
+
+led = DigitalInOut(board.P16)
+led.direction = Direction.OUTPUT
+
+i2c = busio.I2C(board.SCL, board.SDA)
+pca = PCA9685(i2c, address=0x68)
+pca.frequency = 50
+servoSetInit = (1000, 630, 500, 600, 240, 600, 1000, 720)
+servoAngle = [1000, 630, 500, 600, 240, 600, 1000, 720]
+motionSpeed = 15
+servos = []
+for c in range(8):
+    servos.append(servo.Servo(pca.channels[c], min_pulse=800, max_pulse=2200))
+
+def servoInitialSet():
+    print("Initialize servos")
+    for i in range(8):
+        servos[i].angle = servoSetInit[i] / 10
+
+def servoFree(n = None):
+    if n:
+        print("Release servo #", n)
+        servos[n].angle = None
+    else:
+        print("Release all servos")
+        for s in servos:
+            s.angle = None
+
+def servoWrite(num, degrees):
+    degrees = min(max(degrees, 0), 180)
+    servos[num].angle = degrees
+
+# angle is a list of 8 target values
+def setAngle(angle, msec):
+    step = [0, 0, 0, 0, 0, 0, 0, 0]
+    msec = msec / motionSpeed # now 15//default 10; //speedy 20   Speed Adj
+    for val in range(8):
+        target = servoSetInit[val] - angle[val]
+        target = min(max(target, 0), 1800)
+        if target != servoAngle[val]: # Target != Present
+            step[val] = (target - servoAngle[val]) / msec
+    #print(step)
+    for _ in range(msec):
+        for val in range(8):
+            servoAngle[val] += step[val]
+            #print("setting servo %d to %d" % (val, int(servoAngle[val] / 10)))
+            servoWrite(val, servoAngle[val] / 10)
+        #time.sleep(msec / 1000)
+    print(servoAngle)
+
+servoInitialSet()
+
+led.value = False
+setAngle([0, 0, -200, 0, 0, 0, 0, 0], 500)
+setAngle([0, 0, -1800, 0, 0, 0, 1800, 0], 500)
+setAngle([900, 0, -1800, 0, -900, 0, 1800, 0], 500)
+setAngle([900, 0, -200, 0, -900, 0, 0, 0], 500)
+setAngle([900, 0, -1800, 0, -900, 0, 1800, 0], 500)
+setAngle([900, 0, -200, 0, -900, 0, 0, 0], 500)
+setAngle([0, 0, -200, 0, 0, 0, 0, 0], 500)
+led.value = True
+
+servoFree()

CircuitStonks/code.py

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+import time
+import board
+import busio
+from digitalio import DigitalInOut
+from adafruit_esp32spi import adafruit_esp32spi
+from adafruit_esp32spi import adafruit_esp32spi_wifimanager
+from adafruit_featherwing import minitft_featherwing
+import terminalio
+from adafruit_display_text import label
+import displayio
+
+minitft = minitft_featherwing.MiniTFTFeatherWing()
+
+# Get wifi details and more from a secrets.py file
+try:
+    from secrets import secrets
+except ImportError:
+    print("WiFi secrets are kept in secrets.py, please add them there!")
+    raise
+
+# If you are using a board with pre-defined ESP32 Pins:
+esp32_cs = DigitalInOut(board.D13)
+esp32_ready = DigitalInOut(board.D11)
+esp32_reset = DigitalInOut(board.D12)
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
+wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets)
+
+# Symbol "INX" for S&P500, "DJIA" for Dow
+DATA_SOURCE = "https://www.alphavantage.co/query?function=GLOBAL_QUOTE&apikey="
+DATA_SOURCE += secrets['alphavantage_key']
+symbols = ["DJIA", "INX", "AAPL", "TSLA", "MSFT"]
+
+# Set text, font, and color
+group = displayio.Group()
+symbol_text = label.Label(terminalio.FONT, text="WiFi", color=0xFFFFFF,
+                          scale=3, max_glyphs=10)
+symbol_text.anchor_point = (0.0, 0.0)
+symbol_text.anchored_position = (0, 10)
+
+price_text = label.Label(terminalio.FONT, text="Connect...", color=0xFFFF00,
+                         scale=3, max_glyphs=10)
+price_text.anchor_point = (0, 1)
+price_text.anchored_position = (0, 75)
+
+change_text = label.Label(terminalio.FONT, text="", color=0xFFFF00,
+                          scale=2, max_glyphs=10)
+change_text.anchor_point = (0, 0)
+change_text.anchored_position = (80, 10)
+
+group.append(symbol_text)
+group.append(price_text)
+group.append(change_text)
+minitft.display.show(group)
+
+refresh = None
+i = 0
+while True:
+    # only query the api every 10 sec (and on first run)
+    if (not refresh) or ((time.monotonic() - refresh) > 10):
+        try:
+            symbol = symbols[i]
+            i = (i + 1) % len(symbols)  # go to the next symbol
+            response = wifi.get(DATA_SOURCE+"&symbol="+symbol).json()
+            print("Response is", response)
+            symbol_text.text = response['Global Quote']['01. symbol']
+            spot = round(float(response['Global Quote']['05. price']))
+            price_text.text = '${:,d}'.format(spot)
+            change = float(response['Global Quote']['09. change'])
+            print("Price is $", spot, "Change: $", change)
+            if change >= 0:
+                change_text.text = '+${:,d}'.format(round(change))
+                change_text.color = 0x00FF00
+            else:
+                change_text.text = '-${:,d}'.format(abs(round(change)))
+                change_text.color = 0xFF0000
+            refresh = time.monotonic()
+        except RuntimeError as e:
+            print("Some error occured, retrying! -", e)
+            time.sleep(5)
+            continue
+    time.sleep(5)

CircuitStonks/secrets.py

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+
+secrets = {
+    'ssid' : 'myssid',
+    'password' : 'mypassword',
+    'timezone' : "America/New_York", # http://worldtimeapi.org/timezones
+    'alphavantage_key' : 'GRABAFREEKEYONLINE'
+    }