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Bertrik Sikken
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Bertrik Sikken

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I'm working on a simple standalone location tracker based on wifi access points detected by an inexpensive WiFi-capable microcontroller (the ESP8266): https://revspace.nl/EspWifiTracker

The image below shows a bunch of locations calculated by the google location service based on the WiFi access points detected by my tracker during a little trip through Gouda this afternoon.

Instead of icons, I'd like to draw circles with the radius corresponding to the "accuracy" field returned by the google location service. I don't know yet how to do this in QGIS.

Silly problem: I only got 25 points because the USB power bank I used to power the tracker shuts itself off when it doesn't detect enough current being drawn when I put the ESP8266 in deep sleep mode to save power ... :)
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Peter D'Hoye (petur)'s profile photoHayden Pearce's profile photo
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This is very neat indeed.
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Bertrik Sikken

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My new motto for git use: "if you branch it, you merge it!"
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Peter D'Hoye (petur)'s profile photo
 
Why? Trees don't do it, why would you? ;)
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Bertrik Sikken

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Warning, Windows Update deletes GRUB!

After a windows update for Win10 on my dual-boot notebook, Linux no longer boots. It seems the grub bootloader got deleted. Instead of booting grub, Windows now shows me a flashing screen "All your files are exactly where you left them". Well, thank you very much ...
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Boris Gjenero's profile photoPeter D'Hoye (petur)'s profile photoMarten Lootsma's profile photo
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I had the same... https://help.ubuntu.com/community/Boot-Repair solved my problem
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Bertrik Sikken

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git pull --rebase
git checkout .
git clean
git clean -f
git checkout master
git reset --hard HEAD
cd ..
rm -rf XXX
git clone XXX
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Folkert van Heusden's profile photo
 
zo herkenbaar
git zou mergen simpeler moeten maken. nou mooi niet. argumenten zijn er ja.
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Bertrik Sikken

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Nooit begrepen waarom jullie dat steeds weer zeggen ;)
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Bertrik Sikken

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Wat een geneuzel steeds met die flash-plugin van Adobe. Er wordt elke zoveel weken weer een ernstig lek gevonden. Prutsers! En bij installatie moet je telkens goed opletten dat je niet per ongeluk een-of-andere vage evaluatie-versie van een anti-virus installeert.
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Yep... het lijkt wel Java :-) Alleen daar hebben ze nu eindelijk wèl die irritante bloatware uit de updater gehaald...
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Bertrik Sikken

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Playing around with an LPCexpresso LPC1347, getting a bit frustrated with the IDE. The Linux installer is still 32-bit (welcome to the 20th century) and requires a whole bunch of 32-bit/i386 binaries to be installed first. All of this results in just an evaluation version of the tool chain with an 8kB limit. One of the nice things is ability to do step-by-step debugging (haven't tried that yet).

I wonder if there are any good alternatives, like something simple with a Makefile.
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Bertrik Sikken

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I just got online on The-Things-Network in Utrecht with an RFM95 module, an arduino nano pro mini 8 MHz/3.3V and the LMIC software.

Used this software:
https://github.com/Lora-net/LoRaMac-node
(modified the device id to my birthdate, changed all occurances of arduino.h to Arduino.h)

Data sent and received by TTN: http://thethingsnetwork.org/api/v0/nodes/19740823/?format=api
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I wish you had a gateway in Gouda  #thethingsnetwork  
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Bertrik Sikken

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My project page about understanding the LoRa RF modulation format was mentioned on hackaday this weekend!

See:
http://hackaday.com/2016/01/31/hacking-the-internet-of-things-decoding-lora/

LoRa is a spread-spectrum radio modulation format that, combined with forward error coding, allows for low-power communication with larger range, for example for "internet-of-things" devices.
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Congrats!
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Bertrik Sikken

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Hi all,

I'm following a series of Linux kernel driver programming workshops with a strong focus on Allwinner/sunxi boards at my local hackerspace: https://revspace.nl/KernelDriverProgrammingCourse2015

So far, we've been testing / adding support for existing stuff (like OTG) for Allwinner devices by extending device tree files for various boards. We're also working on adding official support for i2c devices like touchscreen controllers and accelerometers.
My contribution will be a port of the focaltech ft5302 touchscreen controller driver, it's working on two tablets already and I hope to get it integrated into Linux soon-ish.
Kernel Driver Programming Course, The Hague. The date for the first day of the Kernel Driver Programming Course has been finalized, and is Sunday July 26th, from 12am - 6pm (end time is aprox.). As stated before the plan is to get together from then on every 2 weeks, so the next course day will ...
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Bertrik Sikken

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My first attempt at 3d printing tonight. It's an ingress portal key. Banana plug for scale.
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Bertrik Sikken

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Finally got the Android 5.1 lollipop update on my phone (Moto G 4G - XT1039). My initial impression is quite positive, it seems the phone can now hold more applications active in the background. In particular #Ingress seems to resume a lot better.
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Peter D'Hoye (petur)'s profile photo
 
Yes, 5.1.1 is nice (on my N7), I am holding off upgrading my Xperia Z3C until 5.1 comes out somewhere next month or so, given my experiences with 5.0 on the N7 I am not going to install that, it will be 4.4.4 -> 5.1.1
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Have them in circles
140 people
Jasja Dekker's profile photo
Mohamed Tarek's profile photo
Henk Termeer's profile photo
Freek-Jan Scherpenzeel's profile photo
Michael Carr's profile photo
MyNetRay *Nederland*'s profile photo
Marcel Volaart's profile photo
Johan Govers's profile photo
Tomasz Moń's profile photo
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  • Technolution
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Open source, bats, electronics
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bats, electronics, open source software, rockbox (alternative firmware for mp3 players).