Camera overview I have a cheap IP camera from Polish reseller (ivel.com.pl). It is in fact a IP cam based on HiSilicon SOC. Manufacturer code is: LV-IP22IR40DVBL and it is available here. In fact for this price the camera is quite nice. It has a solid …
Read MoreRPi: creating a RAM-disk running Linux environment from NFS booted Raspbian
Sometimes you need a very specific use case for your Raspberry Pi. The durability (and speed) of the SD card used in RPi may vary. Because of this I always tend to move Raspbian to an NFS share, and boot via NFS (root over NFS). …
Read MoreMonitoring Voltronic Power Axpert MEX inverter under Linux
I am using the SKYMAX Expert MEX 3K-24 inverter. In fact it is identical with Voltronic Power Axpert MEX 3K-24, it was just rebranded by a Polish company. It is a 24 volts model, so I am using a two 12V 100Ah batteries connected in …
Read MoreDS2438-based 1-Wire humidity sensor
In this post I want to share with you how I did the humidity measurement in my bathroom. Because I already have 1-Wire buses all over my house measuring temperatures (DS18B20), sensing my switches (DS2413) and controlling relays (DS2408), so logical step was to measure …
Read MoreControlling relay board with DS2408 over 1-Wire
I wanted to make my home automation to be cheap. Commercial solutions, like KNX was a way too expensive for me; besides creating own system gives great benefits like better knowledge about how it works, possibility to customize it to my needs (including software) and of …
Read MoreAutomate my weekly weight logging
This time – something not strictly related with electronics and home automation 🙂 Ok – maybe a little – if you own intelligent weighing machine and want to connect it directly to your central computer 😉 Every week after weighing in, I had to save …
Read MoreMonitoring DeDietrich from Linux
When my boiler was properly detected and connected and I was sure that I can ‘talk’ to it using the Recom protocol, I had to make the connection permanent and constantly query it from my Raspberry Pi. The boiler has 5V TTL signal level and …
Read MoreConnecting DeDietrich MCR3 to PC via serial connection
I have a DeDietrich MCR3 24/28MI boiler. Of course I was planning to obtain as much information as I could from it. I’d like to monitor its work and create some nice graphs 😉 I found out quickly that the brand is in fact called …
Read MoreRaspberry Pi 1-Wire tests, DS2482-800
Bit bangling When I bought my brand new Raspberry Pi in 2012 (model B, version 2.0 with 512MB of RAM), then I needed a stable 1-wire bus for my home automation. Firstly I was testing it with w1-gpio kernel module which is emulating a 1-wire bus master …
Read MoreFixing my DTT3500
For years I am using a great 5.1 speaker system: Cambridge SoundWorks DTT 3500. It was quite expensive at the time when I was buying it, but it is still playing really great nowadays. Of course it is not a top product for audiophiles, but the …
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