Editing Frequently asked questions (section) From The Great Ball Contraption Wiki PageDiscussionEditHistory More... What links here Related changes Special pages Page information Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits. This page supports semantic in-text annotations (e.g. "[[Is specified as::World Heritage Site]]") to build structured and queryable content provided by Semantic MediaWiki. For a comprehensive description on how to use annotations or the #ask parser function, please have a look at the getting started, in-text annotation, or inline queries help page.Anti-spam check. Do not fill this in! ===We are just using battery packs to power the modules, but looking at videos I see some type of controller that must plug in to AC power. What is that and do I need one? Where do I get it?=== These are [[b:4548|train regulators]] from the old 9V train system. For a collaboration, check with the coordinator to see if she expects you to bring your own. However you might want one for yourself as it has a built-in potentiometer giving six forward and six reverse voltage outputs for controlling speed. You can get them from [[brickwiki:BrickLink|BrickLink]] or other sellers. As of 2015 they were about 12 USD from European sellers and a bit more in the States. You will also need a 1 amp, 9-12V (VAC or VDC, either one) AC adapter for your country. You can use a LEGO branded power supply, but availability is limited. If you don't mind using a non-LEGO power supply, you can get them inexpensively wherever used electronics are sold. If you are using Power Functions motors, you will also need a [[b:8886|8886]] or [[b:8871|8871]] Power Functions extension wire, as the light gray end connecter doubles as a converter between the old 9V system and Power Functions. Summary: Please note that all contributions to The Great Ball Contraption Wiki are considered to be released under the a Creative Commons Attribution-ShareAlike 3.0 license (see GBC:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here. You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission! Cancel | Editing help (opens in new window) Retrieved from "http://greatballcontraption.com/wiki/Frequently_asked_questions"