Electronics Project Help Required

[kevin21212121]

I'm looking to build a quantity (approximately 10) of small electronic devices, housed in IP65 plastic boxes, for a team-game I am trying to create.

Each box needs to have three different coloured superbright LEDs (or similar) mounted externally on them, one red, one blue, one yellow.

The idea is that when a player from a particular team reaches a box, he/she will push a colour-coded button to illuminate his team's coloured LED (e.g. a red team member would push the red button to illuminate the red LED), which will simultaneously switch off any other LED that was currently lit. At the end of the game, the game referees would make a visual check to see how many LEDs each team had still illuminated (remembering that only one LED can be illuminated on each box at any one time), and the team with the most LEds illuminated would win.

If possible, I would also like to ensure that once an LED has been illuminated, the push buttons on the box will be "locked out" for a fixed period of time, say, 30 seconds or one minute. This is to stop two players fighting over the box, as they will know that once another team's player has illuminated their LED, nobody will be able to do anything about it for a set period of time.

I wondered if anybody could advise what electronic components I would need to build such a device, other than the obvious plastic box housing, battery pack, 3x LEDs and bezels, and 3x colour-coded push buttons. I would ideally like to run this system off small radio controlled car battery packs, perhaps 4.8V, 6.0V, 7.2V, 8.4V or 9.6V packs. Alternatively, a PP3 9V battery would also be fine, though obviously these are smaller so wouldn’t last as long as a radio controlled battery pack would.

I have very good soldering skills, so don’t mind soldering things together, but I am stuck as to what I would need to make this device function as described... I have very little knowledge of electronics. If anybody can suggest parts, or even provide a circuit diagram, I would be eternally grateful.

Many thanks,

Kevin.