RC plane Kyosho P-51D Mustang scale model military aircraft of the 40th class. The plane comes with fixed landing gear that can be replaced on the chassis with the mechanism of cleaning. Finally, the P-51 trimmed with the famous color film Kyosho, used screen printing, applied military markings, as well as all the important stars and stripes insignia. Even metallic finish played perfectly. Design of lightweight balsa and aircraft plywood.
Ham radio
ECONOMICAL LIGHTING
In large apartments and private homes in the evening and at night it is difficult to follow the dark corridors or staircases to the touch to find the button and turn the lighting.
There’s another alternative — buy a standalone lamps soft light — can be installed in any convenient place at the discretion of the owner.
Buggy Traxxas E-Revo
Radio-controlled model four-wheel drive monster Traxxas E-REVO. The model is equipped with two motors, all the necessary electronics, remote control Traxxas TQ 2.4 Ghz and two special NI-MH batteries 8.4 v 3000mAh!
All electronics are protected from ingress of any moisture or dirt, the model can be run in the rain or snow!
SENSITIVE METAL DETECTOR
I have designed the metal detector works on the principle of beating is generated due to the difference of the oscillation model and tunable oscillators (5-10-th harmonic, selects the nearest frequency). This allows to increase the sensitivity of the instrument to the point that it becomes possible to detect, say, a five-kopeck coin in the soil at 10 cm, and a steel manhole or pipe — to 65-cm depth. Performed on the available element base, a metal detector does not require careful tuning and maintenance. Power supply — galvanic battery “Crown”.
THE SOUND CONFIRMS THE COMMAND
Simple circuits sound LEDs turn on electronic devices
In Amateur practice, it is frequently necessary to announce the inclusion of any homemade or industrially produced household electronic appliance, equipment or device — which is unusual, pleasant to the ear (if picked up a soft tone audible signal). This is especially true when the appliances operated with a remote control — an acknowledgement signal confirms that the received command. For example, when the operation control of air conditioning — when it is turned on or the mode is changed as a response to user, sound short and melodious sound signal duration of 1 — 2 seconds.
BUZZER
Buzzer on digital circuits switching on/off of electronic devices with power supply of 12 V.
In the car a lot of devices that are included in the operation key or switch. To control the inclusion of a device only by clicking a mechanical switch (which when the machine can not hear) or visual position of a key (which is not easy in motion).
AUTOGRANT IN THE HOUSE
The use of automotive capacitive sensor for home security.
Automotive sensors swing (vibration), RF and capacitor, responsive to the approach of people to the car or movement in the cabin, successfully adapted by hams for specific tasks in the home.
AUTOMATIC ON-OFF
This device is designed to automatically turn on exterior lighting after dark, and, accordingly, the automatic switch-off at dawn, which is always important, especially in terms of country of residence in order to save energy resources.
The power of the connected load is 200 — 500 watts. If the load is more si-mister should be installed on the radiator area of 50 — 100 cm2. It is possible to use a more powerful triac, for example ТС112-16-10.
PEACEFUL SLEEP (MOSQUITO DEVICE)
“Ah, summer red, I would love you, if not for the heat, and dust, Yes mosquitoes, Yes flies”. And although the high poetry of the great poet little combined with the dry prosaic lines, technical articles, these words can be safely put as the epigraph to this material. To stop the change of seasons in nature is impossible, and every year we have a “happening” summer, and with it come the usual worries of relief and localization of negative emotions, invariably manifested in humans with the appearance of annoying flying insects — mosquitoes, flies and other midges. To protect yourself from them, in nature and even at home someone buys a mosquito net, others treat themselves and family members with special insect repelling creams and formulations. However, possessing the skills, you can build a simple circuit protection device against mosquitoes, operating by using of ultrasonic radiation. What is ultrasound?
“CROCODILE” FOR HEAT SINK
Restraint solder radiodetal tweezers also serves as a heat sink. With the same purpose and possibly the use of clamp type “crocodile”, if it is put on the output of the semiconductor
