I am a total beginner, trying to find out if it is possible to achieve the below:
I want to point a red laser light on wall (not harmful, something like this Green Burning Ebay Laser! - YouTube), track red dot and take picture, read text from the picture from around the coordinates where red dot is found using Arduino.
Is it possible using only Arduino?
Can somebody please suggest what all modules are needed and steps to create this.
Note: I want to make it without computer usage, only through Arduino.
Green laser is forbidden in certain countries because it quickly distroys en Eye. Why not use a legal one, like red?
Beying a beginner like You I suggest You do something less hazarseous.
I've done something similar with the video experimenter shield, but not pictures, just instantaneous readout of the spot's location.
You better use one of those 1$/doz. red laser pointer diodes which can not do much harm.
For reading the wall a camera is required and a graphics enabled computer like a RasPi or PC.
OP already said he wanted to use a red pointer.
want to point a red laser light on wall (not harmful, something like this
lastchancename:
OP already said he wanted to use a red pointer.
Did we miss the original topic title "Track green dot on wall and read text from around the dot coordinates" ?
Somehow?
Some funny business going on here !
A monochrome camera really doesn't care.
Based on initial replies, I updated my question to be clear and not to confuse. Can somebody please reply on the actual problem now?
DrDiettrich:
Short answer: NO
Can you please elaborate why not? What are the restrictions?
You can find the location of the dot fairly simply with an Arduino (assuming it is significantly brighter than anything else in the image), but reading text from an image is difficult with most, if not all Arduinos.
