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Added two suggestions #13

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Added two suggestions
djairjr Feb 5, 2023
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djairjr Feb 5, 2023
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119 changes: 116 additions & 3 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -34,10 +34,13 @@ But it's probably easiest to do a Cmd-F/Ctrl-F find on keyword of idea you want.
* [Output a "Analog" value on a PWM pin](#output-a-analog-value-on-a-pwm-pin)
* [Control Neopixel / WS2812 LEDs](#control-neopixel--ws2812-leds)
* [Control a servo, with animation list](#control-a-servo-with-animation-list)

* [Neopixels / Dotstars](#neopixels--dotstars)
* [Moving rainbow on built-in board.NEOPIXEL](#moving-rainbow-on-built-in-boardneopixel)
* [Make moving rainbow gradient across LED strip](#make-moving-rainbow-gradient-across-led-strip)
* [Fade all LEDs by amount for chase effects](#fade-all-leds-by-amount-for-chase-effects)
* [Dictionary for HTML Color Names](#dictionary-for-html-color-names)

* [Audio](#audio)
* [Audio out using PWM](#audio-out-using-pwm)
* [Audio out using DAC](#audio-out-using-dac)
Expand Down Expand Up @@ -79,6 +82,7 @@ But it's probably easiest to do a Cmd-F/Ctrl-F find on keyword of idea you want.
* [I2C](#i2c)
* [Scan I2C bus for devices](#scan-i2c-bus-for-devices)
* [Speed up I2C bus](#speed-up-i2c-bus)
* [Using Matrix Keypad with I2C Port Expander](#using-i2c-port-expander-with-matrix-keypad)
* [Timing](#timing)
* [Measure how long something takes](#measure-how-long-something-takes)
* [More accurate timing with ticks_ms(), like Arduino millis()](#more-accurate-timing-with-ticks_ms-like-arduino-millis)
Expand Down Expand Up @@ -243,8 +247,6 @@ while True:
if button.released:
print("button", button.key_number, "released!")
```


## Outputs

### Output HIGH / LOW on a pin (like an LED)
Expand Down Expand Up @@ -405,7 +407,88 @@ while True:
leds.show() # only write to LEDs after updating them all
time.sleep(0.05)
```

### Dictionary for HTML Color Names
Then you can call CRGB ['ColorName'] in same manner that you call CRGB::ColorName in Arduino and FastLed

```py
CRGB = {
'MistyRose': (1.0, 0.894118, 0.882353), 'Red': (1.0, 0.0, 0.0),
'FairyLight': (1.0, 0.894118, 0.176471),'LemonChiffon': (1.0, 0.980392, 0.803922),
'SlateGrey': (0.439216, 0.501961, 0.564706),'FairyLightNCC': (1.0, 0.615686, 0.164706),
'Lavender': (0.901961, 0.901961, 0.980392), 'Gainsboro': (0.862745, 0.862745, 0.862745),
'PowderBlue': (0.690196, 0.878431, 0.901961), 'Aqua': (0.0, 1.0, 1.0),
'Crimson': (0.862745, 0.0784314, 0.235294), 'PaleVioletRed': (0.858824, 0.439216, 0.576471),
'SandyBrown': (0.956863, 0.643137, 0.376471), 'DeepSkyBlue': (0.0, 0.74902, 1.0),
'BurlyWood': (0.870588, 0.721569, 0.529412), 'DarkBlue': (0.0, 0.0, 0.545098),
'DarkGrey': (0.662745, 0.662745, 0.662745), 'LightPink': (1.0, 0.713725, 0.756863),
'DarkRed': (0.545098, 0.0, 0.0), 'MidnightBlue': (0.0980392, 0.0980392, 0.439216),
'DimGrey': (0.411765, 0.411765, 0.411765), 'Grey': (0.501961, 0.501961, 0.501961),
'Orange': (1.0, 0.647059, 0.0), 'FloralWhite': (1.0, 0.980392, 0.941176),
'AliceBlue': (0.941176, 0.972549, 1.0), 'Magenta': (1.0, 0.0, 1.0),
'MediumSpringGreen': (0.0, 0.980392, 0.603921), 'PaleTurquoise': (0.686275, 0.933333, 0.933333),
'Turquoise': (0.25098, 0.878431, 0.815686), 'Orchid': (0.854902, 0.439216, 0.839215),
'BlueViolet': (0.541176, 0.168627, 0.886274), 'Coral': (1.0, 0.498039, 0.313725),
'PeachPuff': (1.0, 0.854902, 0.72549), 'Peru': (0.803922, 0.521569, 0.247059),
'MediumOrchid': (0.729412, 0.333333, 0.827451), 'DarkOliveGreen': (0.333333, 0.419608, 0.184314),
'Sienna': (0.627451, 0.321569, 0.176471), 'Honeydew': (0.941176, 1.0, 0.941176),
'ForestGreen': (0.133333, 0.545098, 0.133333), 'DimGray': (0.411765, 0.411765, 0.411765),
'Gray': (0.501961, 0.501961, 0.501961), 'HotPink': (1.0, 0.411765, 0.705882),
'MediumSlateBlue': (0.482353, 0.407843, 0.933333), 'Brown': (0.647059, 0.164706, 0.164706),
'FireBrick': (0.698039, 0.133333, 0.133333), 'GhostWhite': (0.972549, 0.972549, 1.0),
'Gold': (1.0, 0.843137, 0.0), 'LightBlue': (0.678431, 0.847059, 0.901961),
'DarkSlateBlue': (0.282353, 0.239216, 0.545098), 'LightGrey': (0.827451, 0.827451, 0.827451),
'LawnGreen': (0.486274, 0.988235, 0.0), 'Lime': (0.0, 1.0, 0.0),
'DarkMagenta': (0.545098, 0.0, 0.545098), 'LimeGreen': (0.196078, 0.803922, 0.196078),
'MediumVioletRed': (0.780392, 0.0823529, 0.521569), 'Moccasin': (1.0, 0.894118, 0.709804),
'OldLace': (0.992157, 0.960784, 0.901961), 'Chocolate': (0.823529, 0.411765, 0.117647),
'PaleGoldenrod': (0.933333, 0.909804, 0.666667), 'Bisque': (1.0, 0.894118, 0.768627),
'Chartreuse': (0.498039, 1.0, 0.0), 'DarkViolet': (0.580392, 0.0, 0.827451),
'Olive': (0.501961, 0.501961, 0.0), 'PaleGreen': (0.596078, 0.984314, 0.596078),
'PapayaWhip': (1.0, 0.937255, 0.835294), 'Pink': (1.0, 0.752941, 0.796078),
'MintCream': (0.960784, 1.0, 0.980392), 'DodgerBlue': (0.117647, 0.564706, 1.0),
'Khaki': (0.941176, 0.901961, 0.54902), 'Aquamarine': (0.498039, 1.0, 0.831372),
'DarkTurquoise': (0.0, 0.807843, 0.819608), 'Green': (0.0, 0.501961, 0.0),
'LightSlateGrey': (0.466667, 0.533333, 0.6), 'Purple': (0.501961, 0.0, 0.501961),
'DarkGreen': (0.0, 0.392157, 0.0), 'DarkCyan': (0.0, 0.545098, 0.545098),
'DarkSalmon': (0.913725, 0.588235, 0.478431), 'LightGoldenrodYellow': (0.980392, 0.980392, 0.823529),
'LavenderBlush': (1.0, 0.941176, 0.960784), 'Navy': (0.0, 0.0, 0.501961),
'Cornsilk': (1.0, 0.972549, 0.862745), 'LightSalmon': (1.0, 0.627451, 0.478431),
'IndianRed': (0.803922, 0.360784, 0.360784), 'BlanchedAlmond': (1.0, 0.921569, 0.803922),
'CadetBlue': (0.372549, 0.619608, 0.627451), 'DeepPink': (1.0, 0.0784314, 0.576471),
'MediumSeaGreen': (0.235294, 0.701961, 0.443137), 'Plaid': (0.8, 0.333333, 0.2),
'Cyan': (0.0, 1.0, 1.0), 'AntiqueWhite': (0.980392, 0.921569, 0.843137),
'Blue': (0.0, 0.0, 1.0), 'LightSlateGray': (0.466667, 0.533333, 0.6),
'RosyBrown': (0.737255, 0.560784, 0.560784), 'RoyalBlue': (0.254902, 0.411765, 0.882353),
'SeaGreen': (0.180392, 0.545098, 0.341176), 'LightSeaGreen': (0.12549, 0.698039, 0.666667),
'MediumAquamarine': (0.4, 0.803922, 0.666667), 'DarkOrchid': (0.6, 0.196078, 0.8),
'GreenYellow': (0.678431, 1.0, 0.184314), 'DarkSlateGray': (0.184314, 0.309804, 0.309804),
'Azure': (0.941176, 1.0, 1.0), 'Fuchsia': (1.0, 0.0, 1.0),
'Indigo': (0.294118, 0.0, 0.509804), 'Ivory': (1.0, 1.0, 0.941176),
'Beige': (0.960784, 0.960784, 0.862745), 'DarkOrange': (1.0, 0.54902, 0.0),
'LightCoral': (0.941176, 0.501961, 0.501961), 'Linen': (0.980392, 0.941176, 0.901961),
'MediumBlue': (0.0, 0.0, 0.803922), 'LightCyan': (0.878431, 1.0, 1.0),
'OliveDrab': (0.419608, 0.556863, 0.137255), 'SaddleBrown': (0.545098, 0.270588, 0.0745098),
'Salmon': (0.980392, 0.501961, 0.447059), 'Seashell': (1.0, 0.960784, 0.933333),
'Silver': (0.752941, 0.752941, 0.752941), 'SkyBlue': (0.529412, 0.807843, 0.921569),
'Maroon': (0.501961, 0.0, 0.0), 'SlateBlue': (0.415686, 0.352941, 0.803922),
'Goldenrod': (0.854902, 0.647059, 0.12549), 'Snow': (1.0, 0.980392, 0.980392),
'DarkKhaki': (0.741176, 0.717647, 0.419608), 'SpringGreen': (0.0, 1.0, 0.498039),
'SteelBlue': (0.27451, 0.509804, 0.705882), 'Tan': (0.823529, 0.705882, 0.54902),
'Teal': (0.0, 0.501961, 0.501961), 'Thistle': (0.847059, 0.74902, 0.847059),
'DarkSlateGrey': (0.184314, 0.309804, 0.309804), 'LightGreen': (0.564706, 0.933333, 0.564706),
'LightYellow': (1.0, 1.0, 0.878431), 'Black': (0.0, 0.0, 0.0),
'MediumTurquoise': (0.282353, 0.819608, 0.8), 'LightSkyBlue': (0.529412, 0.807843, 0.980392),
'NavajoWhite': (1.0, 0.870588, 0.678431), 'OrangeRed': (1.0, 0.270588, 0.0),
'Plum': (0.866667, 0.627451, 0.866667), 'SlateGray': (0.439216, 0.501961, 0.564706),
'Tomato': (1.0, 0.388235, 0.278431), 'Violet': (0.933333, 0.509804, 0.933333),
'DarkGoldenrod': (0.721569, 0.52549, 0.0431373), 'Wheat': (0.960784, 0.870588, 0.701961),
'White': (1.0, 1.0, 1.0), 'Amethyst': (0.6, 0.4, 0.8),
'CornflowerBlue': (0.392157, 0.584314, 0.929412), 'LightSteelBlue': (0.690196, 0.768627, 0.870588),
'WhiteSmoke': (0.960784, 0.960784, 0.960784), 'Yellow': (1.0, 1.0, 0.0),
'YellowGreen': (0.603921, 0.803922, 0.196078), 'DarkGray': (0.662745, 0.662745, 0.662745),
'DarkSeaGreen': (0.560784, 0.737255, 0.560784), 'MediumPurple': (0.576471, 0.439216, 0.858824)
}
```
## Audio

In CircuitPython, there are three different techniques to output audio:
Expand Down Expand Up @@ -1178,6 +1261,36 @@ i2c = busio.I2C( board.SCL, board.SDA, frequency=200_000)
# then do something with 'i2c' object as before, like:
oled = adafruit_ssd1306.SSD1306_I2C(width=128, height=32, i2c=i2c)
```
### Using I2C Port Expander With Matrix Keypad
```py
import adafruit_matrixkeypad
import adafruit_pcf8574
from digitalio import DigitalInOut
import board
import time
# Using default i2c with board.SDA e board.SCL
i2c = board.I2C()
pcf = adafruit_pcf8574.PCF8574(i2c, 0x20)

# Classic 3x4 matrix keypad
# I directly soldered the pcf8574 module on the keypad
# with pinout C2 R1 C1 R4 C3 R3 R2
cols = [pcf.get_pin(4), pcf.get_pin(6), pcf.get_pin(2)]
rows = [pcf.get_pin(5), pcf.get_pin(0), pcf.get_pin(1), pcf.get_pin(3)]

keys = ((1, 2, 3),
(4, 5, 6),
(7, 8, 9),
('*', 0, '#'))

keypad = adafruit_matrixkeypad.Matrix_Keypad(rows, cols, keys)

while True:
keys = keypad.pressed_keys
if keys:
print("Pressed: ", keys)
time.sleep(0.1)
```

## Timing

Expand Down