RCMini is a driver for the Dream Cheeky USB RC Car. It will run on any of the RISC OS USB stacks.

Copyright © 2012 Dave Higton

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License version 2 along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

You may contact the author:

by e-mail as dave@davehigton.me.uk, or

by snail-mail at 76 Glenfield Crescent, Southampton, Hants, SO18 4RF, United Kingdom.


This application is intended to drive a Dream Cheeky USB RC Car. This has a USB Vendor ID of 0A81 and a Device ID of 0702.


This application should work on an Iyonix, a Risc PC with a UNIPod, a Risc PC with a Simtec USB podule, or a Risc PC with a Castle USB podule. It may also work on an A9Home, I haven't tested it - but please let me know if you do try, whether you succeed or fail to get it to work.

Copy the !RCMini application into a convenient location. I recommend the $.Apps directory.

If you have a UNIPod or a Simtec USB podule, and you wish the application to start up when you plug the garage in, then you should also copy the !0A81-0702 pseudo-app to the !USB.DevDriver.!03-00-00U directory, whose full path is probably $.!Boot.Resources.!USB.DevDriver.!03-00-00U To make this easier, there is an Obey file called OpenUKDev in the archive. Double-click on OpenUKDev and, if the directory has been "seen", it will be opened for you. Don't bother even trying this if you don't have a UNIPod or Simtec USB podule, as you don't need the !0A81-0702 app, you don't have the directory to put it in, and double-clicking the OpenUKDev obey file will just give an error message "File name '.^' not recognised".

That should be it.


The app should run automatically when the garage is plugged in. The main window, with the controls, should open.

Clicking on one of the arrowed icons should make the car move in that direction. Releasing the mouse button will stop the car. Dragging the mouse over another icon will change the car's direction.


There are some niceties that I haven't got sorted out yet.

I have occasionally had the app crash a Risc PC. I don't yet know why. I recommend that you save all work and quit any unnecessary applications before running this app, just to be on the safe side.

If you're using the Iyonix or Castle podule, you may occasionally see an error message and the app stop working. If that happens, unplug and re-plug the USB connector.

If you're using the Simtec stack, quitting the application from the menu and re-running will not work. I haven't found all the things that I have to deallocate. Just unplug and re-plug the USB connector.

Also, if you're using the Simtec stack, the application may well not work at all unless you *rmkill or *unplug the usb_hidinput module, which would stop all USB HID input devices you have from working, e.g. keyboard, mouse, graphics tablet, and therefore you can only do if you don't use any such thing.

You can download RCMini here.

Revision history

0.01 2009 August 30 First issue

0.02 2012 September 2 Contect details updated

Page last updated 2012 September 2