Headless Streaming Video with the Raspberry Pi Zero W and Raspberry Pi Camera

Hardware and Introduction

I’ve done lots of things with USB cameras on a Raspberry Pi. My 3d Printer has one permanently connected to it running Octoprint…

Use Visual Studio Code for Arduino

VSCode has an Arduino plugin available in preview. Use it. Put your Arduino desktop application in cold-storage. Comparing the two is like comparing a beaver with a 2 ton backhoe.

How to Program an ESP32 in Arduino while using ESP-IDF functions

The Best LoRa Settings for Range and Reliability

A Non-blocking Wait for Event or Timeout in C#

We often want to wait for an Event in a thread while letting other stuff proceed. Or … delay a method in the UI thread while letting stuff update.

How to send email with a Raspberry PI via GMail

Answer

Before getting into the history. I ended up using Python3 and the smtplib library. Quick, simple, and reliable.

Testing Antennas with the LimeSDR Mini

I recently bought a LimeSDR Mini to test antennas and those little transceivers. As usual there are some startup hurdles so I thought I’d document my voyage to turning it into an antenna analyzer.

Testing LoRa Antennas at 915MHz

I’ve been working on LoRa systems and really wanted to find a ‘best of breed’ antenna to use. So, I found an inexpensive but accurate antenna tester and rounded up a bunch of antennas.

Convert TrueType to Bitmap Fonts for C++

It was easy to add the OLED display to a Particle Photon but there was only one font and it was very small and ugly. Making good fonts takes some work.

Note (12/23/2017): I found an elusive bug in the part of the original code that…

How to Build a Hot Plate Reflow Oven

I’ve been building surface mount circuit boards by hand with a hot air gun. It is slow…