To update u-boot via tftp, install a tftp software and copy its binaries to the directory where tftp has its data. The text in bold is the text you type in. This is intended for armbian use. They require the latest u-boot version.

Continue reading Updating Espressobin U-boot via tftp. →

Espressobin is my new toy which eventually be my new bridge to the internet while it hosts my connected home. Eventually it will be hosting Home Assistant, OpenVPN and be the WLAN Access Point.

The Espressobin has all the “horse power” i need, it is equipped with 1 gigabyte of ram and a dual core ARM Cortex A53 processor with a clock speed up to 1.2GHz. Which will be plenty enough for my setup. Technical details about the Espressobin is available on their homepage: http://espressobin.net/tech-spec/

Continue reading Espressobin – install nginx and php →

I am currently working with a project regarding my LED-lightening in the kitchen. The system will be based on a STM32-circuit and the communication device is a mrf24j40 which supports the 802.15.4 protocol.

Continue reading Raspberry pi and stm32 communication with mrf24j40 over 802.15.4. →

Har skrivit ned en dokumentation om flera projekt, programvaror och skript som jag utfört under studietiden, fritiden och på arbetet.

Dokumentet kan läsas här: http://exclude.se/KTH/projekt_js.pdf

Höjdens maximala yttermått var 57 cm varav lådan byggdes med den höjden. Fick rekommendation av hifikit att bredden skulle vara smal, varav frampanelen gjordes med en bredd på 24 cm.

Djupets storlek räknades ut enligt nedan:

Continue reading Steg 2: Bygga högtalarlåda →

Högtalarlåda:
Dimensioner för lådan:

Continue reading Steg 1: Uppgradering av högtalarelement i befintlig låda. →

I’ve created a program for handling data for IoT devices. It is php-based and uses mysql, ssh and rsync.

http://www.exclude.se/KTH/IoT_sync.pdf

https://github.com/payano/IoT_sync