thinking about a new project, wanting any guidance.

Projects General Guidance
1

hello,

first post to the forum after using it religiously (grump mike has helped me more times than i can count).

my project idea is a sensor puzzle box. i am using an arduino uno r3 clone (elegoo). each side will have different sensors that have to be interacted with. I've been brain storming this idea and have came up with a few cool ideas.

So the main side will have five leds of different colours, one for each side of the box, that lights up when that side is solved. Will have an LCD display, and the final puzzle which will be different coloured buttons to be pressed in the order that the leds are arranged when all sides are solved.

One side will be several different temp sensors, one you need to get cold, one hot and one warm. The LCD display could tell you the temps of each, with leds to show when they are correct.
Another side could have 9 capacitive touch sensors that have to be touched in a certain configuration to complete the puzzle.
Then, since I've worked on an electronic piano before, one side would have a speaker connected to pins, when touched with a probe would produce notes, and it has to be played in a certain order (like the ocarina from Zelda).

Just some ideas I've had so far based on what I own. Looking for any other cool ideas for the sides of the cube and any links to similar projects would be appreciated.

2

One side would be all breadboard. You get to plug in any components you like. One task for this side would be to make line 4 equal to 3.3V. (Analog input connected under the breadboard.) The solver has to work out which lines are the 5V and ground then construct an appropriate voltage divider.

Then plug in an LED and bend it around to the light sensor. The Arduino flashes the LED so it can see that it's its own LED shining on the sensor. It also checks that you used a suitable current-controlling resistor by checking the LED's brightness is within range.