Convert your cheap “unmanaged” switch to a VLAN capable layer 2 managed switch for just $2

The title of that post may look crazy at first, but it’s not, it is entirely possible to convert your cheap 100M 8 port switch or stuff like that to a managed switch. That’s possible simply because, if you open up one of these and look at the datasheet, you will find out that they … Read moreConvert your cheap “unmanaged” switch to a VLAN capable layer 2 managed switch for just $2

Calibrating YIHUA 898D soldering station

When you buy an 898D soldering station there’s a very high chance that it is completely uncalibrated, leading to burnt/damaged parts and other kinds of problems since most of the times it is calibrated to give much higher temperature. For that procedure you are going to need: A cross-head screwdriver to open the 898D A … Read moreCalibrating YIHUA 898D soldering station

How to easily test an N-CHANNEL or P-CHANNEL MOSFET using just a multimeter

You should have noticed that most multimeters come with a function to test BJT transistors, but none has a function to test the today’s more common MOSFETs Here are the steps to test an N-CHANNEL mosfet with just a multimeter ( applies to P-CHANNEL too, just swap + and – ), of course the MOSFET has … Read moreHow to easily test an N-CHANNEL or P-CHANNEL MOSFET using just a multimeter

Converting movies to 60 fps on linux ( with wine )

You may have heard of SVP project , if not visit their website http://www.svp-team.com/ . SVP in a first pass calculates the motion vectors for the frame ( the direction and velocity that every object in the video has moved with ), and then on the second pass it generates intermediate frames. With that technique it can … Read moreConverting movies to 60 fps on linux ( with wine )

A very simple internet of things system to control lights and other stuff

In these days i’ve worked on how to create a system that allows me to turn on and off lights or appliances at home with minimal cost and complexity, and there it is: https://github.com/tizbac/IoTManager Each node (ESP-01 ESP8266) with nodemcu firmware and the init.lua script from esp8266 folder of my repository has two outputs and can … Read moreA very simple internet of things system to control lights and other stuff

How to do transparent bridging / repeater on OpenWRT with an Atheros card

What you need An access point running OpenWRT and supporting 4 address mode ( WDS ) Another access point running OpenWRT and supporting both multi-ssid and 4 address mode ( or only 4 address mode if you want wifi->ethernet bridge ) Setting up the main access point First of all , you need to setup … Read moreHow to do transparent bridging / repeater on OpenWRT with an Atheros card

Quick test of NVA3 series reclocking with nouveau and comparison with NVIDIA drivers

These months there has been a lot of work on reclocking support for NVA3 nvidia cards by Roy Spliet on the opensource nouveau drivers. Since i own a Geforce 210 GT i’ve decided to give it a try with some benchmark and the results are quite good The reclocking of these cards is still very … Read moreQuick test of NVA3 series reclocking with nouveau and comparison with NVIDIA drivers