Magic photos. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Magic photos. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

The magician declares to those present that he can "charge" the photographs in such a way that they themselves will respond to his call. Then he takes an ordinary box containing various photographs. Then he takes the rope and lowers it into the box, and after a while the rope should be raised. And, lo and behold, at the end of the string there will be a knot with a photograph. All guests will be very surprised.

Then you can explain to them in detail that this photograph is special, as it depicts something with which some kind of mysterious story is connected. Come up with this story yourself, arousing even more interest among those present.

Focus secret:

The secret of the trick is simple: you need two tiny magnets. One of them is glued to the end of the rope. The photograph must be tied with the same rope, but slightly. In the same way, a magnet is glued to the rope. Accordingly, when a rope with a magnet is lowered into the box, it attracts another magnet. And it seems that the rope itself "caught" a magical photograph.

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ESP32-SOLO-1 WiFi module for low-end IoT devices 23.07.2019

The ESP32-SOLO-1 is Espressif's new high performance all-in-one module designed for a wide range of applications from low power wireless sensor networks to applications requiring voice processing or MP3 streaming audio encoding. The Wi-Fi+BT+BLE module is based on the ESP32-S0WD chip with one computing core.

Integration of Bluetooth, Bluetooth LE and Wi-Fi standards in a single chip guarantees the applicability of this module in any 2,4 GHz applications - both for direct data transfer to the user's device via Bluetooth, and for connection from anywhere in the world via a WiFi router. Support for BLE allows you to create inexpensive beacons (Beacon) based on the ESP32-SOLO-1 for positioning inside buildings or sending short information messages about goods.

Low current consumption - less than 5 μA - makes it possible to create stand-alone devices that can operate on batteries for years. The ESP32 supports speeds up to 150 Mbps and the 20 dBm output power guarantees good range.

ESP32-SOLO-1 uses freeRTOS operating system with LwIP and TLS 1.2 stack with hardware accelerator. Provides secure (encrypted) software download over the air (OTA).

Features of ESP32-SOLO-1:

Chip: ESP32-S0WD 5x5mm QFN
Integrated memory: 4 MB SPI FLASH
Frequency range: 2,4...2,5 GHz
WiFi support: 802.11 b/g/n (up to 150 Mbps)
Bluetooth support: v4.2 BR/EDR and BLE
Sensitivity: up to -97 dBm
Output power: 20 dBm (max, 11b mode)
Interfaces: UART, SPI, I2C, PWM, I2S, GPIO, ADC, DAC, etc.
Quartz resonator: 40MHz (10ppm)
Operating voltage: 2,7...3,6 V
Size: 18 x 25 x 3 mm; 38 pins (LCC)
Antenna: PCB with 2 dBi gain
Temperature range: -40...85°C.

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