PID Tuner Tool Released In NinjaCalc

NinjaCalc has a new tool, a PID tuner! This PID tuner tool can be used to simulate/tune a PID controller, which is commonly used in industry to control things such as temperature, flow rates, speeds and all sorts of other things!

This PID tuner tool comes with two predefined processes that you can simulate/tune, a mass/spring/damper and R/C jet engine process. It also allows you to configure you own process to simulate/tune, via an editable JavaScript object.


Once you click the “Start” button, the PID tuner tool simulates the process and shows you the response of the process and PID controller. You can dynamically change the P, I and D terms of the PID controller while the simulation is running and see how this affects the response of the controller.

The PID tuner tool can be found here.

More information on PID Controllers can be found on the PID Control page.

Tonic Control System Project Finished!

Last weekend the Luxcity event went down in Christchurch, NZ. The Tonic control system was brought down and the whole system was set up on Saturday. Unfortunately, some problems were encountered during the set-up, namely the sagging of the tensioned structure (the dimensions weren’t quite right, and when the crane pulled the structure up, it didn’t come together correctly). The manifold system also started leaking from every possible connection (and with 58 sets of couplings, reducers, splitters, and solenoids, there were 100’s of leaks :-0).

This meant that we were working well into the night (even after it opened to the public) to try and get the whole thing functioning. We managed to get tonic into a few of the tubes and pumped around the structure (see pic below), but sadly we had to give up about half an hour before we then had to go and pack everything up again.

More information can be found on the project page at Electronics->Projects->Luxcity UV Tonic Control System.

The previous post about starting the project can be found here.

Luxcity UV Tonic Control System Project Started

I have been asked (by a mate who is studying architecture) to design and build a sequencing control system for 64 solenoids that control a mixture of UV tonic and air into a manifold of pipes to be pumped around a structure for a team participating in the Luxcity Project.

Their page can be found here (, or a news article (, or the Luxcity event page itself (, as of Dec 2017, link unavailable).

The project page can be found at Electronics->Projects->Luxcity UV Tonic Control System.