mikeesto

Use OMXPlayer with Python

Import:

import os

Play a video:

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Start a Python script on boot (Raspberry Pi 3)

This method will also work with any program, including those that require access to xorg

Edit the LXDE autostart file

/etc/xdg/lxsession/LXDE-pi/autostart

Append to the end of the file the command/script to run, for example:

mikeesto

How to print to a Polaroid Zip via the command line

1. Install blueman: sudo apt install blueman
2. Find the MAC address of the zip: hcitool scan
3. Send the photo blueman-sendto --device=XX.XX.XX.XX.XX.XX photo.png

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Reset USB ports on Raspberry Pi on boot

Add to /etc/rc.local:

# To shut off power on USB ports (this shuts power on ethernet as well):
echo '1-1' | tee /sys/bus/usb/drivers/usb/unbind

# To turn power back on
echo '1-1' | tee /sys/bus/usb/drivers/usb/bind

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sudo date -s "$(wget -qSO- --max-redirect=0 google.com 2>&1 | grep Date: | cut -d' ' -f5-8)Z"

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function get_line(start, end) {
  let [x1, y1] = start;
  let [x2, y2] = end;

  let dx = x2 - x1;
  let dy = y2 - y1;

  const is_steep = Math.abs(dy) > Math.abs(dx);

  // Rotate line

mikeesto

# a fresh start
sudo apt-get -y update
sudo apt-get -y upgrade
# remove old versions, if not placed in a virtual environment (let pip search for them)
sudo pip uninstall tensorflow
sudo pip3 uninstall tensorflow
# install the dependencies (if not already onboard)
sudo apt-get install -y gfortran
sudo apt-get install -y libhdf5-dev libc-ares-dev libeigen3-dev
sudo apt-get install -y libatlas-base-dev libopenblas-dev libblas-dev

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docker buildx build --platform=linux/amd64 -t myimage .

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docker run -i --entrypoint=/bin/sh ...

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  import aws from "aws-sdk";
  
  const s3 = new aws.S3({
    endpoint: `https://${process.env.CLOUDFLARE_ACCOUNT_ID}.r2.cloudflarestorage.com`,
    accessKeyId: process.env.CLOUDFLARE_ACCESS_KEY,
    secretAccessKey: process.env.CLOUDFLARE_SECRET_ACCESS_KEY,
    signatureVersion: "v4",
  });
  
  const config = {