FrankBuss

const int trigPin = 3;
const int echoPin = 2;

void setup()
{
  // initialize serial communication:
  Serial.begin(115200);
}

void loop()

FrankBuss

// pin definitions
// note: the echoPin has to be a pin which is allowed for interrupts, see here: https://www.arduino.cc/en/Reference/attachInterrupt
const int trigPin = 3;
const int echoPin = 2;
const int ledPin = 13;
const int speakerPin = 9;

// interrupt speed. the datasheet of the HC-SR04 suggests 60 ms, so chose 16 Hz
const float irqSpeed = 16.0;

FrankBuss

/**
 * Quantize test: 
 * Arduino Nano pins for the MCP4822 DAC: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK).
 * potentiometer input: A0
 */
#include "SPI.h"

// pin numbers
const int ledPin = 13;
const int csPin = 10;

FrankBuss

/**
 * 3 Hz sawtooth example with a DAC8718
 * Arduino Nano pins:
 * CS: 10 
 * MOSI: 11 
 * MISO: 12
 * SCK: 13
 */
#include "SPI.h"

FrankBuss

Version 4 SHEET 1 880 680 WIRE 80 -32 -144 -32 WIRE 176 -32 80 -32 WIRE 544 -32 336 -32 WIRE 80 32 80 -32 WIRE 336 32 336 -32 WIRE -144 128 -144 -32 WIRE 544 144 544 -32 WIRE 176 160 176 -32

FrankBuss

# Python script for voltage logging
import os.path
import sys
import Gpib
import time

# GPIB Address = 24
inst = Gpib.Gpib(0,24, timeout=60) 
inst.clear()  
inst.write("G8")

FrankBuss

segmentImage = Image.load("segment.png")
pi = 4*math.atan(1)
green = Color.new(0,255,0)
black = Color.new(0,0,0)
segmentSize = segmentImage:width()
segmentSpace = segmentSize - 2
width = 480 + 2 * segmentSize
height = 272 + 2 * segmentSize

function init()

FrankBuss

import math

# highest note frequency
c = 4186.01

# distance factor between two notes
f = pow(2, 1.0/12.0)

# show frequncies
ds = [ 239, 253, 268, 284, 301, 319, 338, 358, 379, 402, 426, 451 ]

FrankBuss

#!/usr/bin/python3
import json
import argparse

# parse command line arguments
parser = argparse.ArgumentParser()
parser.add_argument('master')
parser.add_argument('file_to_merge')
parser.add_argument('output_file')
args = parser.parse_args()

FrankBuss

; ATTiny25 implementation of a NAND
; PB1 and PB2 is input, with pullups, and PB0 is output

; fuse settings: disable CKDIV8 for 8 MHz clock

start:
    ; set PB0 as output, all other pins as input
    ldi r20, 1
    out DDRB, r20