75 lines
1.8 KiB
Python
Executable file
75 lines
1.8 KiB
Python
Executable file
# SPDX-FileCopyrightText: 2020 Carter Nelson for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import time
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import board
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import adafruit_lsm6ds.lsm6ds33
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from adafruit_ht16k33 import matrix
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import matrixsand
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DELAY = 0.05 # overall update rate
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# setup i2c
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i2c = board.I2C() # uses board.SCL and board.SDA
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# i2c = board.STEMMA_I2C() # For using the built-in STEMMA QT connector on a microcontroller
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# the accelo
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accelo = adafruit_lsm6ds.lsm6ds33.LSM6DS33(i2c)
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# the matrices
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m1 = matrix.Matrix8x8(i2c, 0x70)
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m2 = matrix.Matrix8x8(i2c, 0x71)
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# the sand
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sand1 = matrixsand.MatrixSand(8, 8)
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sand2 = matrixsand.MatrixSand(8, 8)
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# simple helper
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def update_matrix(m, s):
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for x in range(8):
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for y in range(8):
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m[x,y] = s[x,y]
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# fill up some sand
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for sx in range(8):
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for sy in range(8):
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sand1[sx, sy] = True
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sand1[0,0] = sand1[0,1] = sand1[1,0] = False
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sand1[0,2] = sand1[1,1] = sand1[2,0] = False
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update_matrix(m1, sand1)
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update_matrix(m2, sand2)
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updated1 = updated2 = False
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while True:
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# read accelo
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ax, ay, az = accelo.acceleration
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# rotate coords
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xx = -ax - ay
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yy = -ax + ay
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zz = az
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# move grain of sand from upper to lower?
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if yy > 0 and sand1[7,7] and not sand2[0,0] and not updated2:
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sand1[7,7] = False
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sand2[0,0] = True
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updated1 = updated2 = True
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# move grain of sand from lower to upper?
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elif yy <= 0 and sand2[0,0] and not sand1[7,7] and not updated1:
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sand2[0,0] = False
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sand1[7,7] = True
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updated1 = updated2 = True
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# nope, just a regular update
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else:
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updated1 = sand1.iterate((xx, yy, zz))
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updated2 = sand2.iterate((xx, yy, zz))
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# update matrices if needed
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if updated1:
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update_matrix(m1, sand1)
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if updated2:
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update_matrix(m2, sand2)
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time.sleep(DELAY)
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