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WonderLabs SwitchBot Used nrf51822

2017-06-13 15:40:36 | 日記

WonderLabs SwitchBot uses Nordic's nRF51822 and nRF52832 SoC, uses smartphone wireless start switches and buttons, or uses SwitchLink gateways for remote operation.

Nordic Semiconductor announced that WonderLabs, Inc., a smart home robot company, has introduced SwitchBot, a switch and button for wireless controllers, and a low-power Bluetooth "gateway" SwitchLink that implements SwitchBot remote operation. SwitchBot uses Nordic's award-winning nRF51822 low-power Bluetooth system-on-a-chip (SoC), while SwitchLink uses the nRF52832 SoC.

When used, SwitchBot can be attached to any switch or button on the home, such as a light switch, a coffee machine, or a PC power button, with a tape that allows the user to switch through Bluetooth 4.0 (and later) iOS or Android on a smartphone or tablet App, wireless on / off these devices. To operate outside the home, you can use SwitchLink to remotely operate the SwitchBot device. Nordic's nRF52832 SoC provides reception sensitivity up to -96dBm, providing excellent low-power Bluetooth connectivity between SwitchBots and SwitchLink gateways, and then connecting to the Internet using a Wi-Fi network at home, enabling remote operation via the smartphone app.Off course, there are still need electronic parts to set up.

When the SwitchBot device is started via the SwitchBot app, a mechanical trigger is extended from the device to operate the switch or button, which is very similar to the finger press. The SwitchBot app enables users to control not only an unlimited number of SwitchBot devices, but also to set passwords, timers, and conditional operations such as "If this Then That", such as " To the user left the room, then turn off the lights. Do you know how to program nrf51822?

In order to extend the wireless distance of SwitchBot, the company has developed a self-organizing protocol that is compatible with standard low-power Bluetooth, enabling each SwitchBot to forward commands to multiple devices outside the original smartphone signal range.

SwitchBot uses a single CR2 lithium battery, the standard operating life of the battery up to 2 years, one of the reasons is Nordic nRF51822 SoC ultra-low power characteristics.

Nordic's nRF51822 is built around a 32-bit ARM® Cortex ™ M0 CPU with 256kB / 128kB of flash memory and 32kB / 16kB of RAM. The SoC is equipped with Nordic RF software protocol ("stack") for Bluetooth 4.2 (low power Bluetooth) requirements. The S130 SoftDevice supports parallel operation of the central / peripheral / broadcaster / observer and the wireless device firmware upgrade (OTA DFU).

Nordic's nRF52832 Low Power Bluetooth SoC is a member of the Nordic 6th Generation Ultra Low Power (ULP) wireless connectivity solution that combines a 64MHz 32-bit ARM® Cortex® M4F processor, a 2.4GHz multi-protocol radio (Bluetooth 5, ANT ™ and proprietary 2.4GHz RF software) and 512kB flash memory and 64kB RAM. The SoC is equipped with a stack of S132 SoftDevice compliant with Bluetooth 4.2 requirements for building advanced low-power Bluetooth applications. S132 SoftDevice supports central / peripheral / broadcaster / observer, OTA DFU and up to 20 connections for parallel operation.

ATMEGA328P based on Atmel RISC high-performance, low-power 8-bit AVR microcontroller with 32KB ISP flash memory read and write capabilities, 1024B EEPROM, 2KB SRAM, 23 general-purpose I / O line, 32 common working registers, Flexible timers / with compare mode, internal and external interrupts, programmable serial USART, byte-oriented 2-wire serial interface, SPI serial counter port, a 6-channel 10-bit A / D converter (TQFP and QFN / MLF-packaged 8-channel), programmable watchdog timer with on-chip oscillator, and five power-saving modes that can be selected by software. The device runs between 1.8-5.5 volts. Here is the atmega328p date sheet.

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