5R-5 Bar, Closed Loop, Linkage A relatively simple mechanism, with the very useful feature of sharing the load between the two powered joints: ‘A’ and ‘E’. It may look like two 2R-2 Bar linkages back-to-back, but it works in a…
2R-2 Bar Linkage Probably the simplest of robotic arm/leg mechanisms. It operates in a 2D space, but can be modified to work in a 3D cylinder of space. Easy to implement, but has several drawbacks which will be discussed later.…
Objective While building a complex Raspberry Pi Pico robotics project, I wanted to be able to choose whether to build my model as normal, or to build a set of unit tests. This was particularly important for me because there…
Docker is a container management system that enables the sand-boxing and grouping together of applications which have dependencies on (or interact with) each other. Docker calls these groupings “Stacks” which allow applications to be deployed and controlled as a single…
This article makes the following assumptions: This will be accomplished in three steps: Step 1 – Create empty target repo on GitHub First of all sign in to your GitHub account using a web browser. Next select “Home” from the…
Git is a free and open source distributed version control system optimised for use with text based files. It is fast and efficient because it doesn’t work by keeping extra copies of files, but just the changes between versions and…
KiCad is an “Electronic Design Automation” application, or “EDA”. It is really a suite of design applications that integrate very tightly with each other to provide a “Computer Aided Design” environment suitable for designing “Printed Circuit Boards”, or “PCB’s” for…
Introduction to AC Theory What is AC? So far we have only considered cases in which the current is only flowing in one direction around any particular loop within a circuit. That situation being known as Direct Current (DC). When…
Practical Inductors Before looking at a few of the many types of inductors a few properties of real world inductors should be kept in mind: Inductor Types Air Core Arguably the simplest of all deliberately made inductors. For R.F. applications…
Series & Parallel Inductors You may still be reeling from the strange complications of calculating series and parallel capacitors and voltage/current dividers. I am happy to report that there are no such issues with inductors. To all intents and purposes,…
Inductors Electromagnetism – A Quick Introduction An electromagnetic field is the combination of both an electric field and a magnetic field. Both affect each other and both always exist whenever there is a moving electrical charge. However, both can also…
Practical Capacitors There are a wide variety of capacitor types which use a number of different construction materials. Here is a broad selection of the ind of thing that is available. Capacitor Types Fixed Values Ceramic Disc Made by coating…