Records of poultry ka large poultry farms and in the farms is no easy task, without automation is not enough. This operation can be performed using the microcalculator B3-23. It is necessary only to add the connector through which the electronic device is connected to the sensor (see Fig.) — associated with a movable strip contact pair S1 (see diagram).
You obviously had to read about the models driven by sound signals. Receptor, which we offer to the reader reacts to an audio signal of a certain strength. The source may be, for example, a whistle, a whistle or sound a special transmitter commands. Equipped with this instrument model is performing in any sequence the commands: “forward”, “back”, “left”, “right”. The cessation of the audio signal or decrease it to a certain level is causing the stop model (stop). Here’s how the device works.
The magazine “Amaterske Radio” (Czechoslovakia) proposed scheme is a simple audio probe to detect logic levels; low (logic 0) and high (logical 1). The device consists of a bitonal multivibrator, is made of two elements of D1.1, D1.2 chip D1, and two keys, collected three transistors V2—V4 (see circuit diagram).
Want to lead a conversation about “retraining” relatively useless or obsolete electronic devices in the useful and necessary. A lot of stuff gathering dust “in the bins” radio Amateur may get a second life. This is especially true in economically crisis periods, and not only the world but also a family. For example, a portable radio (transceiver) citizen’s band (CB), shown in the photo, are unlikely to even be interested in Amateur radio.
For school discos and Amateur recording magazine “Funkamateur” (GDR) offers a scheme of five “anal stereomixer (Fig. 1). It is designed to connect two stereophonically (X1, x2), two stereos, (XS, X4) and one microphone (X5) for a soloist or a master program.
Device, a scheme which offers the journal “Funk-shau” (Germany), is used to create different sound effects together with musical instruments. It is made in the form of a set-top box or a separate box to AMY. Is indicated in the diagram of transistors can be applied to domestic couples: KT315 KT361 or КТ3107/КТ3102 with any Read more…
It’s tempting to assemble a simple Telegraph device and to communicate using Morse code. Reliable two-way communication is needed in the conduct of military sports games and competitions, in a tourist campaign and in summer camp, it is interesting to set it up at home or at the cottage.
The electric signal amplitude decreases rapidly — within 2-4 s after pinch the strings, it accounts for only 20-30% of the maximum level. At the same time changing the tone color of the sound. This circumstance restricts the possibility of using the electric guitar as a solo instrument. That’s why natural “voice” strings replaced its electronic similarity with a constant volume level. For the first time such a device has used the group “the Beatles”. Now the same email attachment to AMY is known as disturber (deformer), or “FUZZ”.
There are various electronic devices to locate hidden wiring. However, at home the need for them arises relatively rarely, when, for example, produce the repair of the apartment or change the interior.
The electronic device described in mi readers, you can install on the toy, equipped with a separate drive for each caterpillar: tank, lunar Rover, Lunokhod. The model moves with headlights on in a darkened room, and set PA her the photodiodes capture the reflection of the headlights from obstacles. The appropriate commands to the drive engines on the basis of the received data takes the logical unit. Here’s how it works.