Posts tagged ‘LPY450AL’

A Self-Balancing Robot – III

In part one, I went over the theory behind the self-balancing robot and in part two, I showed you my build using a modified toy truck. In this post, I will walk you through the code and show you the finished balancing robot. If you are impatient, you can scroll to the end for the demostration video and the source code. Continue reading ‘A Self-Balancing Robot – III’ »

A Self-Balancing Robot – II

In my previous post, I explained the theory behind the self-balancing robot at a high level. Here, I will discuss the actual build in more details. Continue reading ‘A Self-Balancing Robot – II’ »

A Self-Balancing Robot – I

Building a self-balancing robot is one of those things that every hobbyist and engineer want to do. But there are a few hurdles for a lot of people. There is the theory on the one hand and then there is the mechanics on the other. In this and the next few posts, I will show you a self-balancing robot I recently built and will explain in details on some of the most important aspects. Continue reading ‘A Self-Balancing Robot – I’ »

Hand Soldering Fine Pitch LGA Chip

Many of the modern chips such as MEMS accelerometers and gyroscopes only come in surface mount versions and many of them come in fine pitch LGA or QFN packaging. This has created a significant challenge for people who just wanted to experiment with these components. The standard soldering technique for LGA/QFN chips is reflow soldering which requires special equipment such as reflow oven and hot air rework station. Special surface mount prototyping PCBs are also needed and these PCBs, depending on the size and complexity can be quite expensive and sometimes are pricier than the components themselves. Continue reading ‘Hand Soldering Fine Pitch LGA Chip’ »