Hi,
I would like to make a simple mind machine.
It consists of a modified pair of glasses with three red LED's on each side, set close to closed eyelids which flash concurrently at a specific frequency which is controlled by the user using a knob on the front of the machine.
It will have 6 red LED bulbs.
They flash concurrently and their frequency can be controlled by a variable resistor.
When the resistor is at its lowest setting they should flash at around 1Hz, when it is at its highest setting it should be at about 15Hz. This doesn't need to be too exact.
The LED's need to be as bright as possible but also need to be less than a centimeter from a closed eyelid, so they should not produce significant heat.
I have very little experience with circuit design. I have found a number of flashing LED circuits on the internet but I don't know how to modify them to get the specific frequency range I require. It has been a while since I have had to use my math skills, so working out the values of the resistors and capacitor is difficult for me.
Any help in designing this project would be appreciated.
I would like to make a simple mind machine.
It consists of a modified pair of glasses with three red LED's on each side, set close to closed eyelids which flash concurrently at a specific frequency which is controlled by the user using a knob on the front of the machine.
It will have 6 red LED bulbs.
They flash concurrently and their frequency can be controlled by a variable resistor.
When the resistor is at its lowest setting they should flash at around 1Hz, when it is at its highest setting it should be at about 15Hz. This doesn't need to be too exact.
The LED's need to be as bright as possible but also need to be less than a centimeter from a closed eyelid, so they should not produce significant heat.
I have very little experience with circuit design. I have found a number of flashing LED circuits on the internet but I don't know how to modify them to get the specific frequency range I require. It has been a while since I have had to use my math skills, so working out the values of the resistors and capacitor is difficult for me.
Any help in designing this project would be appreciated.