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/opt/homebrew/Cellar/avr-gcc@12/12.2.0_3/avr/include/avr/io.h:577:33: fatal error: avr/iom1608.h: No such file or directory

/opt/homebrew/Cellar/avr-gcc@12/12.2.0_3/avr/include/avr/io.h:577:33: fatal error: avr/iom808.h: No such file or directory

If you ended up here, I think you likely got an error like what is pictured above. For some reason your avr-gcc library doesn't include the header files for the ATTiny1608 or ATTiny808 processors. But the good news is you can just download a few files (like from here) drop them in the right place and then everything will work.

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# PIO-based GE-ColorEffects driver for MicroPython on RP2
# MIT license; Copyright (c) 2023 Robert Quattlebaum

import array, time
from machine import Pin
import rp2
import machine

# Pin 15 is the default on the [pimoroni plasma stick][1].
#

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# Use like:
# 
# ```
# openssl req -x509 -nodes \
#         -days 3650 \
#         -newkey rsa:2048 \
#         -keyout /etc/ssl/private/host.key.pem \
#         -out /etc/ssl/certs/host.crt.pem \
#         -config self-signed-cert.cfg
# ```

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pbpaste | tr '\t' '|' | sed 's/\(.*\)/|\1|/' | pbcopy

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3D Printing with Nylon Trimmer Line

Disclaimer

All of this information is provided AS IS, with no warranty or guarantee of accuracy. A good-faith effort has been made to ensure this document was accurate at the time it was written, but YOU ASSUME ALL RISK BY FOLLOWING ANY ADVICE BELOW.

Introduction

Nylon is a strong and impact-resistant thermoplastic that is used

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/// Chamfering OpenSCAD Example
/// Written by Robert Quattlebaum, 2022-12-14
///
/// This example shows a method for adding a chamfer to a certain
/// class of 3D objects where the profile in the Z dimension doesn't
/// change significantly.
///
/// You must specify the size of the chamfer, the height of the child
/// and the Z-offset for the bottom of the object. You can also specify
/// the shape of the chamfer, which can be either "cone", "curve", "curve-in",

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# REPL Prompt over TCP socket.
# Use `$ telnet <ip-addr>` to connect.

import network
import os
import socket
import sys

listen_s = None
client_s = None

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Extracting the fundamental frequency from a time-domain signal

"Extracting the fundamental frequency from a time-domain signal" is basically a long-winded way of saying "demodulating the baseband signal from FM-encoded signal". Well, that's still long winded, but I digress.

In an FM radio, the contraption that accomplishes this task is referred to as a "discriminator". So the task here is to implement a software-based frequency discriminator. There are a few different ways

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Hacking the Rectangular Starlink Dishy Cable

These are are some notes I put together on butchering the rectangular dishy cable.

FOLLOW THESE GUIDELINES AT YOUR OWN RISK. I TAKE NO RESPONSIBILITY FOR ANY DAMAGE OR INJURY YOU SUSTAIN FROM FOLLOWING OR NOT FOLLOWING THESE GUIDELINES.

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#!/bin/sh

GP=${GP-java -jar gp.jar}

set -v
set -e

# This is for the ACR122U to put it into
# a nice state where it won't time out on us.
$GP -d -v -a ff0041ff00 -a ff00520000 || true