ESP8266
Last week I once again participated in the great Geekcon event. If you haven't heard of it, Geekcon is an one weekend event where people come to created massive useless projects. The main idea is to enjoy the process of building the project rather than completing it. You
google sheets
About a year ago I posted a blog describing how to log temperature straight to google sheets from a DS18B20 temperature sensor. New Version This blog is an extension of the first, using much the same technique, but this time logging Temperature, Humidity and Air Pressure from a BME280 sensor
ESP8266
Several acquaintances have asked for instructions to build a switch that can be operated from a phone app, and/or virtual assistant (Google Home, Alexa, etc). This is a detailed description - but you'll need a wee bit of technical skill to get through it. THIS PROJECT DESCRIPTION
ESP8266
It has been quite a long time since I have written a post on this blog. The main reason is the free time I have, or haven't, since my baby daughter was born 9 months ago. Nevertheless I keep making fun project, just have less time to document
ESP8266
Ask your iPhone for weather conditions and it'll display data from a sensor somewhere nearby - often at the local airport - which might be miles away from your current location. And at home, you may have IoT sensors that tell you the temperature in your bedroom or
MAX7219
First off - I take no credit at all for this project. All praise goes to the code writer David Bird. His code is here. I needed to be able to send a message to a dot-matrix screen remotely. I found the solution in minutes. It works so well, I
ESP8266
Regular readers of this blog know we're enthusiastic users of the ESP8266. I've personally shown how to control a camera pan and tilt mechanism, make a temperature data-logger that logs straight to a Google Sheet, and even how to create a mailbox notifier that sends an
ESP8266
In recent months I’ve been using Cayenne for many of my IoT projects, allowing me to view sensors and controllers remotely. It’s a great platform, and very easy for the user with limited programming skills. Among many other things, Cayenne allows you to view logged data over time,
Arduino
A couple of weeks ago I set up a new bench in my workshop. It was a great new space, but each time I wanted to flash an Arduino or ESP8266, I had to turn 180 degrees to get to my computer. I knew there must be a better way.
ESP8266
We all know how fidgety it is to flash the ESP: 3.3 volts only, smoothing capacitors, GND-GPIO 0, VCC to CH_PD. Wouldn't it be nice if there was a simple adapter? A quick look in ebay reveals that at least for the ESP-01 you can pick
ESP8266
It's vacation time, and like everyone else, I wanted to protect my home while I was away. I don’t have a dedicated alarm. (Prospective burglars please note - I’m back now and, the house is heavily fortified!) I did have a few Raspberry Pis and SD
ESP8266
About three weeks ago, I helped Mike making a smart mailbox. If you haven't read his post already, it is a very nice one! Go on and read it. In short, we designed the next circuit: which resetting the ESP8266 every time the mailbox is opened. After the