In our city a large traffic, not only on the main streets. And traffic lights are sometimes not on every street corner to cross the street in a place unsafe. Especially if the person is elderly or poor vision. Careless movement can result in an accident.
To avoid this, I suggest a walking stick to install the pump of the flashlight (Fig. 1), having painted it red napolcom (it better visible). A simple multivibrator (Fig. 2), mounted together with the battery casing of the cane (Fig. 3), causes the light to blink rhythmically, attracting the attention of oncoming pedestrians and vehicle drivers.
The cane can be used for other purposes. The watchman guarding the shop, the warehouse, the blinking light signals that the object is under observation. Paleobiological such a stick-flasher also come in handy: sleep will serve as a signaling device and flashlight at the same time.
B. FILIMONOV, Sverdlovsk
Recommend to read
DIMENSIONAL…
It is often necessary to pour a certain amount of fluid in a pan or bucket. Not to do it "by eye", rather on the inner surface of dishes used to put a measuring scale, calibrated in...
BALL IN A JAR
Whether knit, sew Lee — balls of yarn will "jump" on the floor and something rolled. This does not happen, if the ball be placed in attached to the wall or table stand plastic jar with a...
