Qball's Weblog

Making the stupid dumb. Vindriktning and Förnuftig

A while back I saw rumors that IKEA was introducing air quality sensors andair-purifier...

July 22, 2021

ESP32-S2-Wroom - new lows in power saving.

Two weeks ago I was shopping on mouser to find some GPS modules (might blog about this ...

May 18, 2021

My solution for a cheap air purifier - part 4

I made a few small updates to the air purifier to finish it off.New lidTo reduce sound ...

May 02, 2021

My solution for a cheap air purifier - part 3

This part will describe the electronics for this 2nd air purifier.I had a nice 24V fan ...

May 02, 2021

My solution for a cheap air purifier - part 2

2nd part of air purifier. I just finished printing v2. The overall result is very nice,...

April 30, 2021

My solution for a cheap air purifier

Seeing some recent ‘fuzz’ about making your own air-purifier, for example on BigClive.c...

April 27, 2021

LiFePO4 and ESP-Now - Part 2

As a follow up on the previous blog post.LiFePO4As mentioned in the last blog post I ha...

April 04, 2021

LiFePO4 and ESP-Now

As a follow up on the 19+ Months battery lifetime, a few small updates:LiFePO4As mentio...

April 04, 2021

Rant and ESP8266 - 19+ Months 18650 battery lifetime

rantLets start this blog post with a rant. About a year ago I posted a blog, '1+ year 1...

January 23, 2021

GITLAB - Reset all passwords

I had to reset all user paswords on a GitLab instance. As I could not find a good way t...

January 26, 2020

ESP8266 - 1+ Year 18650 battery lifetime

Around 1.5 year ago I started developing small sensors that could be placed around the ...

January 01, 2020

RD Tech - UM25 Power Meter

Not a real review, but I had one for a while now. Decided to buy another one (with Blue...

March 16, 2019

Crappy USB Hub

This is another grind my gears, this little issue caused a lot of headache before it wa...

March 03, 2019

Quick IKEA Solbana Powerbank review

I recently was at the IKEA and saw thesolbana powerbank for around € 15,– (combination ...

August 08, 2018

Rofi 1.4.0: Sneak Preview Custom Layouts

As a last minute addition, in git you can now change how the different widgets of the G...

June 12, 2017