Attitude estimation using IMU sensors

In this post I want to talk a bit about the use of accelerometer and gyroscope sensors to perform attitude (roll, pitch and yaw) estimations. Systems that perform these kind of tasks are often referred to as AHRS (Attitude and Heading Reference System) and is commonly used where it is important to know the attitude […]

RetroPie Arcade Part 3 – The enclosure

Part 1 and part 2 of this build can be found in links. The size of the enclosure, and the whole system, was completely dictated by the size of the screen I decided to use. The initial idea was to buy cheap portable game systems from eBay, remove whatever was inside and replace with my […]

Getting started with STM32F1

If you are like me, you often find yourself opening some electronic device to see what makes it tick and maybe discover some new magic part. Recently this was the case with some new parts that I bought for my FPV drone and could not help noticing how many of these devices used STM micro-controllers. […]

RetroPie Arcade Part 2 – The screen

Part 1 can be found here. My aim for this project was to fit the largest screen possible that I would consider portable. Just based on availability and the screen sizes of cellphones I decided that 5″ was the size to aim for. For  reasons I cannot remember this did not happen and I settled […]

“A drone is born” – Deel 1

10 February 2011 het ek 4 motors, 4 elektroniese spoed beheerders (ESC’s) en ‘n paar ander los komponente gekoop. Baie opgewonde oor die vooruitsig om vir my ‘n hommeltuig van die grond af op te bou, op daardie stadium het ons nog helikopters in LS gebruik en ‘n hommeltuig was gesien as n onstabiele tipe […]

Die groter prentjie

Die laaste paar maande het ek heelwat tyd spandeer om kleiner en kleiner elektroniese komponente te probeer soldeer. In vandag se dae is dit beter om oppervlak-komponente te gebruik, selfs vir jou projekte by die huis. Hulle is goedkoper as “through hole” komponente en dit is ook heelwat makliker om stroombaanbordjies vir hulle te ontwerp […]

Herstel van ‘n Nexus 5X

Hoe maklik is dit om jou selfoon self te herstel? Verlede jaar het ek probeer my Sony Xperia Z3 se glas agterkant te herstel en nie regtig daarin geslaag. Ek gaan weer probeer, maar die Z3 is miskien nie die maklikste foon om te herstel met gom wat meeste parte in plek hou. Daar was […]

Duke soos in die ou tyd

eBay is wonderlik. Wonderlik, maar gevaarlik. Dit is waar jy geld onnodiglik uitgee op goed wat jy nie nodig het nie. En dit is presies hoe ek opgeeindig het met twee skootrekenaars vanuit die vorige millenium. Die rekenaars Compaq Contura 420C Die eerste een is ‘n Compaq Contura 420C uit 1995. Dit hardloop ‘n 486 […]