Pinewood Derby Timer

Timer Help

This page contains a list of commonly asked questions and the answers for them. Please use the contact page if you have a question or issue that is not covered here.

Isn't this the same timer as on

Yes, this is the same timer, resources and person behind timer. I am moving all of the content to this website.

Can the Adafruit 1.2" displays be used with the PDT?

Yes, with a little extra work they can be used.  Please refer to Timer Construction page for more information.

When compiling the sketch (after installing the Adafruit libraries) I get errors about an 'ArduinoRobot'.

This is an old issue from when the Adafruit libraries were installed manually.  Current versions of the Arduino IDE have a library manager to handle library installs and this should not be an issue.

This is caused by a conflict between different versions of the Adafruit libraries.  The simplest solution is to delete (or move) the Robot_Motor and Robot_Control directories out of the libraries directory.

The PDT3 program (or one of the windows) is stuck minimized.  The lane place/time display is small and will not resize.

Hold the Ctrl key down while opening the main program (or the window).  This will force the program (window) to open normally, discarding the previous size and position.

What license is used for these resources?

All code (Arduino sketches), circuit schematics and construction plans are licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.

Last updated: 16 Sep 2018