If you want to build a useful GPT using GPT Builder, you are going to need a way to persist data between prompts. ChatGPT does this to an extent by itself but it has a bit of a dodgy memory. Sometimes it remembers what you are talking about but sometimes…

The problem with custom GPTs and ChatGPT in general, is that sooner or later you will want to ouput more than text. GPT-4 has more capability in this area than you might expect (Figure 1). To demonstrate these capabilities, we created a new GPT which can be used to generate…

Hacking is not what it used to be! In my day hackers had a deep knowledge of operating systems and programming languages (or at least knew how to download a script), these days you just need to have a casual conversation with an AI. Recently, OpenAI made it possible for…

OpenAI have made it possible to create your own chatbot, using their language model and a combination of custom data, special instructions, and combined skills. They are calling these AI “apps” GPTs, and later this month are opening a GPT store where you can sell your custom GPT. What!

Interested in what planes are flying over your location? Want to know how high they are and how fast they are going? Want to build your own ADS-B (Automatic Dependent Surveillance-Broadcast) ground station that can be installed anywhere and receive real-time data directly from airplanes on your computer? In 2017…

In Part 3, we will explain the mathematics behind the inverse kinematic solution for controlling a Stewart mobile platform simulator. If you don’t care about the derivation of this treatment, feel free to jump ahead to part 4! The problem is converting our desired roll, pitch and yaw angles into…

A Watt Meter is a useful addition to your tool kit if you are using electric motors, servos, or Electronic Speed Controllers (ESCs). There are a few different types available, but for our purposes, the WM150 from ToolkitRC (Figure 1) is an affordable option. Specifically, a Watt Meter allows you…

There will come a point where you will want to store data which isn’t lost when your microprocessor loses power. This is particularly handy for storing calibration or configuration values, to save you having to re-calibrate some piece of hardware (e.g., IMUs, and servos) every time the power cycles. …

Part 2 demonstrates the techniques used for finding the centre of gravity of our top and bottom hexagonal platforms and how to calculate the co-ordinates of the connection points on each edge. This step is glossed over by everyone! …