VALLHORN Wireless Motion Sensor teardown
I was at the Ikea this week and picked up the new motion sensor. The VALLHORN.The senso...
Qball's Weblog
As a follow-up on yesterdays blog post, I’ve tried to modify one of my sensorPCB to run...
Battery life timeThis one is very hard to answer, the batteries Voltage is very tempera...
Long range with NRF24L01+ and ina228 power monitor
NRF24L01+ LNAIn my previous post I remarked that the nrf24l01+ modules with LNA did not...
Low power with atmega328pb and NRF24L01+
Recently at work I had to do some experiments with the classic nrf24l01modules. These a...
Making the stupid dumb V2. UPPÅTVIND
About 1 1/2 year ago I made a blogpost about making the Förnuftig smart. Thisone is sti...
Doing a lot in home-automation one key part is notifications. In my opinionnotification...
Hitting a new low-power record with the esp32c3 - part 2
To get to the low power usage of the previous blog post there several steps Itook. The ...
Hitting a new low-power record with the esp32c3
When looking up some information I blogged about in the past, I realized Ihaven’t poste...
Parkside Performance Smart accu 20V - 8Ah - Small review
Since a few weeks lidl sells Parkside Smart Batteries.The batteries have an impressive ...
Bad power supply unit might kill your MCU, do not buy!
On my balcony I have a very small solar panel setup that I use to keep a small car batt...
Making the stupid dumb. Vindriktning and Förnuftig
A while back I saw rumors that IKEA was introducing air quality sensors andair-purifier...
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 ...
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 ...
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 ...