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bcm2835_i2c is the new i2c module on RPi kernels

Hello. Yesterday I’ve updated the kernel on my RPi from 4.4.11+ to 4.14.31+. Unfortunately the i2c stopped working despite the module bcm2708_i2c loaded. Trying to add the ds2482 with command: echo ds2482 0x18 > /sys/bus/i2c/devices/i2c-1/new_device gives ‘no such file or directory’ error. I reported this …

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linux, raspberrypiLeave a Comment on bcm2835_i2c is the new i2c module on RPi kernelsApril 1, 2018May 30, 2018 By manio

How to hack my own IP camera :)

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 …

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grafana, linux3 Comments on How to hack my own IP camera :)July 14, 2017July 14, 2017 By manio

RPi: 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). …

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linux, raspberrypi8 Comments on RPi: creating a RAM-disk running Linux environment from NFS booted RaspbianApril 11, 2017April 11, 2017 By manio

Monitoring 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 …

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grafana, inverter, linux, raspberrypi50 Comments on Monitoring Voltronic Power Axpert MEX inverter under LinuxMarch 23, 2017July 12, 2020 By manio

DS2438-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 …

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1wire, grafana, linux, raspberrypi23 Comments on DS2438-based 1-Wire humidity sensorMarch 11, 2017January 11, 2018 By manio

Controlling 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 …

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1wire, linux, raspberrypi13 Comments on Controlling relay board with DS2408 over 1-WireMarch 9, 2017March 9, 2017 By manio

Automate 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 …

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endomondo, grafana, linux, myfitnesspal4 Comments on Automate my weekly weight loggingMarch 8, 2017March 8, 2017 By manio

Monitoring 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 …

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dedietrich, grafana, linux, raspberrypi, remeha10 Comments on Monitoring DeDietrich from LinuxMarch 4, 2017May 11, 2018 By manio

Connecting 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 …

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dedietrich, remeha4 Comments on Connecting DeDietrich MCR3 to PC via serial connectionMarch 3, 2017March 8, 2017 By manio

Raspberry 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 …

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1wire, linux, raspberrypi29 Comments on Raspberry Pi 1-Wire tests, DS2482-800February 28, 2017March 15, 2019 By manio

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