Here is something that has the following features: 1) Only one led (or relay) on at a time. 2)Maximum on time is 30 seconds. 3) If IR signal received ...

Did you mean to post this in "new content?" Myself or others can help you out if you re-post in "Components and Programming-Arduino" or elsewhere.

The 200 usec is being compensated for somewhere in the device. The transmitter and receiver are not the same. There are two "speakers" one for transm...

This is what I think happened. Think of the point just before you enter the while loop as State A and just after the loop State B. If variable i is ...

Assuming this works out I said measuring between different coil pairs should be high resistance. But the exception is measuring between the 2 10-ohm ...

@sdk I'll take another shot at this after looking at your picture. You have 8 large solder pads that are numbered 1 through 8. What I am going to supp...

If you can access the wires you could try to separate the common turning a 5-wire effectively into 6-wire.

You have a lot of repeated statements that don't change anything. For example pins 14 thru 17 only need to be defined as outputs once with your code ...

Here is something to get started: Torque= Inertia x acceleration. The acceleration is based on what the final turntable speed is and how fast to get...

Do you mean mechanically sloppy? Or output signal is sloppy or other.

Check out Pololu. See item #1523 Magnetic Encoder Pair Kit for Mini Plastic Gearmotors, 12 CPR, 2.7-18V. And they have a variety of "TT like" gearmo...

What is the motor driving? Is it linkages , pulley and timing belt, or other? It seems you want the position of something to be determined by the pos...

These are car replacement horns. So looking at typical wattage values they could be ballpark 4-6 amps each. I believe a common car horn fuse is 20 amp...

You can probably still get these to work the way you want. What you might want to try is on a breadboard take a led-receiver pair and put a trim pot w...

Did they give you a part number for the photodiode and are you sure it is not a transistor? Also some of these are designed with a coating that filter...