Hack a day auto

You could even put together a passable film scanner with LEGO. If materials of varying thicknesses are used, focus needs to be re-set every time the material changes, and manual focusing quickly becomes a chore. The way [Scorch Works] has done this is to make two spring-loaded clamps from angle aluminum and a few pieces of hardware. Technically, the glasses have a distance sensor embedded into the front of the frame and continually adjust the focus of the lenses.

An 8 gram, mAh battery powers the prototype for roughly 6 hours. Eyeglasses that can adapt on the fly to different focal needs is important because many people with degraded vision suffer from more than one condition at the same time, which makes addressing their vision problems more complex than a single corrective lens.

As a result, people require multiple sets of eyeglasses for different conditions. A full field of view could be restored if eyeglass lenses were able to adapt to different needs based on object distance, and that is what this project achieves.

The module seen above is version 3. With version 2 [Adrian] was using a defocused laser to illuminate dark subjects so the DSLR auto-focus could be used. It is mounted on the front of his project enclosure, using two alkaline batteries for power. It sounds like [Adrian] is struggling a bit with his circuit design. They power the circuit, but must not put out enough light for the sensor to work. The original version worked, but he had to operate the laser manually and the hardware was kind of spread out all over the camera.

The latest version 2. The laser operation is now automatic, coming on when the shutter trigger is depressed half way, or when the auto focus enable button is depressed. Most notably, the laser light is still a bit too strong. In certain focus modes, the auto focus assist light is programmed to turn off once focus has been achieved. He noticed that if his subject moves or the focus point changes before he snaps the picture, the AF light does not come back on to assist in refocusing the image.

It uses pulse dialing — no touch tones. The phone normally sits on a platform on the left side of the machine. Raising up the platform exposes a bank of toroidal cores, arranged in seven rows of four. Each row corresponds to a dialed digit, and the four cores used to encode a single digit. At the top and bottom of the programming board are two pin connectors, each pin corresponding to one of the preset phone numbers.

A bunch of patch wires would have been provided, and you program each number by threading a long wire through the appropriate cores, connecting it at the top and bottom connectors much like a modern solderless breadboard.

The transistor cans are mounted upside down like dead spiders. By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies.