ESP8266 based room-conditions monitor, Part 1
When I built my Freeform ESP8266 OLED MQTT client and wrote about it I mentioned I have a long-running project which captures the data I wanted to display on the device. I call it Room Monitor and it is nothing special - a bunch of sensors connected to ESP8266 and powered with a battery. I am going to briefly sum‑up its hardware and software development in the following two articles. This one is going to cover prototyping and the next one the current (and semi-finished) PCB version.
Squid badge - my first PCB design
I designed my first PCB. It’s not useful at all and very primitive electrically. But I have learned a lot.
I have build katana60 - a custom mechanical keyboard - a few months ago and I use it on a daily basis. But there are so many interesting keyboard designs out there. It just too tempting not to build another one.
Need a USB cable? Build one!
When you have a custom keyboard with some nice keycaps and case, you might start to think, what should I customize next? Let’s start with the cable which connects my keyboard to my computer!
Freeform ESP8266 OLED MQTT client
Cyborgduck - a 555-timer-based dead bug cirquit
Behold, our cyborgduck overlords are coming!
Freeform 555-timer-based breathing diode bug
I have been watching those amazing freeform creations by people like @MohitBhoite and @jipraus for some time. I examined many entries for the recent Circuit Sculpture Contest on hackaday.com and have been thinking, that I would love to build something like that, but I had been convinced that my skills are not good enough.
But skills can be trained and learned. So I finally ordered a few brass rods and tried my first freeform sculpture. Here’s the result.
Learning the hard way - DIY power measurement unit with INA219 and ATtiny85
A story about how I was reminded that impatience and impetuosity can backfire when dealing with hardware.
Building a custom keyboard - Katana60
I learned recently that there’s a huge community around making of custom mechanical keyboards. Even though building such keyboard is actually quite expensive I failed to resist the temptation and decided to build my first one.
KITTBlink2 - KITT inspired gizmo AKA Larson scanner, version 2
An improved version of my previous creation. Better and hackier!
More blinking LEDs - KITT inspired gizmo, version 1
What could I do with couple of ICs (mainly shift registers), LEDs and basic components, but without a micro-controller?
LED cube 4x4x4 with ATtiny84 and 74138
I made a LED cube. A silly thing that blinks a lot and is controlled by programmable microcontroller. But why? And how?