Tagged "ESP32"
In 2019, I built an energy monitor to keep track of our electricity consumption. Then, in 2021, Home Assistant added an Energy Management feature that keeps track of electricity and gas usage. So n...
When using AWS IoT Core, most tutorials will tell you to include device certificates in your firmware. While that does work, it means you won't be able to run over-the-air updates.
In this post, I'...
Building a battery-powered IoT device? Then you'll want to monitor the battery's percentage. Here's how to do it properly.
The problem
Many websites tell you to measure the b...
The ESP32 camera is the cheapest microcontroller with a built-in camera that you can buy. The OV2640 sensor has a max resolution of 1600x1200, but sometimes you don't need the entire image.
In this...
In this video I want to go over some of the reasons why - in my opinion - the ESP32 is an incredible microcontroller and why you should use in your IoT projects.
In a nutshell:
Dual-core CPU (cloc...
I have a few ESP32's running in my house. A few of them are running 24/7 and require an always-on WiFi connection. That's been quite tricky to implement. I used to include various checks throughout...
My DIY home energy monitor has been running for almost a year now. It's been recording my electricity consumption every second and everything is neatly archived in my AWS account.
Still, though, th...
By now, it's no secret that the ESP32 is my go-to chip for making IoT devices. They're small, powerful, have a ton of onboard features, and they're relatively easy to program.
However, when using i...
Running an ESP32 on a battery is a tricky operation. The chip is a powerhouse, and with power comes great responsibility. In this post, I’ll outline how I got an ESP32 to run for over 15 weeks (and...
One day I was wondering: how much electricity is flowing through my apartment right now? Looking online I found various sensor devices like Smappee and Sense, but those are relatively expensive and...