Recently I started a project using ws2811 RGB Pixel drivers, and wanted to write some software on a Raspberry Pi, ESP8266 or ESP32 that bit-banged the GPIO ports to generate the data stream suitable to drive the pixels.Continue reading “LHT00SU1 Logic Analyser”
I had a need recently to make a quick PCB for a pixel controller I’m working on, and I usually send them off to a fab to be manufactured. Sometimes I’m a bit impatient, and this was a fairly straightforward design, single sided for the most part, so I made a couple with the DIY technique described below.Continue reading “DIY PCB Manufacture”
Normally my blog contains articles on making, electronics, DIY, etc. This once, I’d like to cover a topic that’s quite different – Movember.
Continue reading “Off Topic – Movember”
I’ve been using an ultrasonic sensor in my Kerosene Tank (Home Heating Oil) for a while now, but was not happy with the stability of the readings. Especially on relatively warm days, as the fumes in the tank seemed to confuse the readings. So I decided to try a different type of sensor, in the form of a 4-20mA Liquid Level sensor. This article shows the setup and compares to the ultrasonic sensor.
Here’s a few 3D models of the time-lapse rail I’ve been working on. I’ve put a good bit of time into the models, as I feel it’s a good way of showing how the construction is done for the various parts of the rail. The last model is of the complete rail. I still have a few parts to add, like the Tripod Head and WiFi Antenna, but they do demonstrate the construction nicely.
See the Github repo for models, electronics designs, laser cutting info, software, etc. I’m adding more and more to that as I get the time. In the near future there should be enough info for people to easily build their own rails. And there are other posts in this blog showing more. Be sure to check them out.
In order to use the OpenLapse controller, it’s necessary to flash the firmware onto it. This article describes how to do that, and when you’re complete, you should be able to connect into the ‘openlapse’ WiFi hotspot with your smartphone and control your DSLR and motor. Even if you don’t have the additional hardware, you can still play with the user interface. I’d appreciate feedback. 🙂
Here’s the first in a series of posts on my Open Source Hardware project, entitled OpenLapse, which is a rail system for timelapse photography, including everything from the electronics, software, and physical hardware designs. It’s an evolution of a previous project, the Raspberry Pi based Timelaspe Rail, but this is designed to be simpler to build and use. A web interface is presented from the controller which generates a WiFi hotspot, and the user can chance the parameters for the timelapse, as well as manually control the motors on the rail.
Following on from my last post about my DIY Intruder Alarm, I thought I’d post about another wee device I’ve hooked up to it, a Smoke/Combustible Gas/Carbon Monoxide detector that’s WiFi capable, for about $5. Continue reading “$5 WiFi enabled Smoke/Gas Detector”
Over the past few months, I’ve been building a DIY Intruder Alarm, so here’s a brief overview of it’s layout and functionality. It’s based on a Raspberry Pi, but there’s nothing to say that it couldn’t be based on any single board computer with an adequate number of GPIO inputs, Up-board, Minnowboard, Beaglebone, etc.
So when I was building the home-heating controller (as described here), I decided to finish it off with a laser-cut face-plate.