Shackle knot. Travel Tips

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Shackle knot. Travel Tips

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shackle knot very similar to"drunk" knot. Its name in English means "handcuffs". A node can serve the same purpose. Despite the external similarity, these are two different nodes. In any case, without untying them and removing the ends from the central loop, it is impossible to turn one knot into another.

Some sailors call this knot a double top knot, as it is sometimes used in a similar way.head knot.

Rice. 90. Shackle knot

Author: Skryagin L.N.

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Random news from the Archive

Silicon Labs BGM111 Blue Gecko Module 20.08.2015

Targeting IoT device designers, Silicon Labs has introduced a fully integrated and certified Bluetooth Smart module. The BGM111 module opened the Blue Gecko family of modules built on the single-chip system of the same name.

Freeing developers from the hassle of designing hardware and writing embedded software, the BGM111 Blue Gecko module will accelerate the creation of a wide variety of devices, including smartphone accessories, activity monitors and other wearable electronics, automotive diagnostics, industrial sensors, and retail equipment.

Silicon Labs BGM111 modules come pre-installed with the Bluetooth LE stack, which complies with the Bluetooth 4.1 specification. In the future, it is possible to upgrade to Bluetooth 4.2 and newer versions. The presence of certification allows the use of modules in products for the North American, European and Asia-Pacific markets. The advantages of the BGM111 also include the presence of an SDK and support for the Bluegiga BGScript scripting language, which allows you to quickly create applications using Bluetooth that do not require a separate microcontroller.

The BGM111 configuration includes an ARM Cortex-M4 microcontroller, 256 KB Flash and 32 KB RAM. The module can be powered by a miniature 3V battery or two AAA batteries. In active mode, the microcontroller consumes 59 mA / MHz, and in sleep mode, the current consumption is reduced to 200 nA. The built-in Bluetooth Smart transceiver consumes up to 7,5 mA in receive mode and up to 8,2 mA in transmit mode.

The communication range is up to 200 m. The dimensions of the module are 12,9 x 15 x 2,2 mm. Introductory module samples and SLWSTK6101A development kits are already available. The manufacturer expects to start serial deliveries in the fourth quarter.

The BGM111 is priced at $4,97 per piece in a 10-piece lot. The SLWSTK000A kit costs $6101.

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