| import numpy as np | |
| import matplotlib.pyplot as plt | |
| # Original data points | |
| x_vals = np.array([-0.5, -23.6, -58.3]) | |
| y_vals = np.array([1, 47, 110]) | |
| # Linear regression (best-fit line) | |
| coeffs = np.polyfit(x_vals, y_vals, 1) | |
| linear_fit = coeffs[0] * x_vals + coeffs[1] |
| # simple asyncio demo of two LEDs using global variables | |
| # 8 May 2025 - @todbot | |
| import asyncio | |
| import board | |
| import digitalio | |
| ledA = digitalio.DigitalInOut(board.GP25) | |
| ledB = digitalio.DigitalInOut(board.GP0) | |
| ledA.switch_to_output(value=False) | |
| ledB.switch_to_output(value=False) |
Summary:
adafruit_midi: 39.9 kB free -> 23.2 kB freeadafruit_midi: 31.3 free -> 21.3 kB freeUsing adafruit_midi in CIRCUITPY/lib installed with circup:
Adafruit CircuitPython 9.2.7 on 2025-04-01; Metro MIMXRT1011 with IMXRT1011DAE5A
>>>
>>> import gc
| // Show many neopixel strips in use simultaneously using Adafruit_NeoPixel | |
| // | |
| // 2024Dec12 - @todbot | |
| // compiles, not tested | |
| #include <Adafruit_NeoPixel.h> | |
| #define NUM_STRIPS 3 | |
| const int pin_for_strip[] = {A0, A2, 5}; |
| # Pico-SDK setup and compile as of 2024 Nov | |
| git clone https://github.com/raspberrypi/pico-sdk/ | |
| git clone https://github.com/raspberrypi/pico-examples | |
| # set up the sdk | |
| cd pico-sdk | |
| export PICO_SDK_PATH=`pwd` | |
| git submodule update --init |
| # two_pot_drone_synth.py -- Use two knobs to control three voices in synthio | |
| # with optional echo effect | |
| # 25 Nov 2024 - @todbot / Tod Kurt | |
| # video demo: https://www.youtube.com/watch?v=xEmhk-dVXqQ | |
| # original simpler version: | |
| # https://gist.github.com/todbot/53bfa7333ac7c1fcff8eaf0f547556ff | |
| import time, random | |
| import board, keypad, analogio | |
| import audiopwmio, audiomixer, synthio |
| # bouncy_balls_vectorio.py - use displayio to make simple bounce balls | |
| # 12 Nov 2024 - @todbot / Tod Kurt. Based off bouncy_balls1.py | |
| import time, random | |
| import board, busio, displayio, i2cdisplaybus | |
| import vectorio | |
| import adafruit_displayio_ssd1306 | |
| # configuration options | |
| num_balls = 12 | |
| ball_size = 5 |
| // touchwheelsao_test.ino -- test TouchwheelSAO in Arduino | |
| // 5 Nov 2024 - @todbot / Tod Kurt | |
| // assumes usuing arduino-pico arduino core | |
| // tune the Wire setup to match your system | |
| #include <Wire.h> | |
| const int i2c_addr = 0x54; | |
| //const int i2c_addr = 0x56; // tod's test wheel |
| // pico_i2c_test.ino -- test pico-sdk i2c functions in Arduino, in this case reading TouchwheelSAO | |
| // 9 Nov 2024 - @todbot / Tod Kurt | |
| // demo using pico-sdk i2c functions inside of Arduino sketch | |
| // copies from https://github.com/raspberrypi/pico-examples/blob/master/i2c/lis3dh_i2c/lis3dh_i2c.c | |
| // assumes compiling with arduino-pico Arduino core for Pico/PicoW | |
| #include <Wire.h> | |
| #define _i2c_dev i2c0 | |
| #define _clkHz 400000 |