Raspberry Pi Model A+ Manual

Raspberry Pi Ikke kategoriseret Model A+

Læs gratis den danske manual til Raspberry Pi Model A+ (4 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 89 personer og har en gennemsnitlig bedømmelse på 5.0 stjerner ud af 45 anmeldelser. Har du et spørgsmål om Raspberry Pi Model A+, eller vil du spørge andre brugere om produktet?

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Side 1/4

Control wireless mains sockets with Arduino and

Raspberry Pi

Posted by stuartChilds on Tue, Jan 13 2015 16:39:00

LightwaveRF (LWRF) is a range of switches, dimmers and other home automation hardware

that is widely available in the UK and further afield, sometimes sold under other brands such

as Siemens. They are affordable units that are easy to work with.

Working with off-the-shelf products, such as remotely switchable mains sockets, means that

we can concentrate on control without having to deal with mains voltages directly.

A set of 3 switchable mains sockets can be bought for around £20 – including a remote that

appears to be compatible with up to 16 switches in total. Here we will replace this remote with

our own wireless hardware, so that we can have programmable control.

The LightwaveRF protocol

One great thing about the LWRF protocol is that it fairly simple and has already been reverse

engineered by people looking to build their own home automation systems. This means that

we can use readily available libraries and examples to quickly interface a microcontroller or

computer with the hardware.

The LWRF system operates on 433 MHz and uses simple On/Off Keying (OOK) modulation,

whereby the carrier is turned on and off to transmit information. Low cost transmitter modules

suitable for use with Arduino and Raspberry Pi are commonly available.

Produkt Specifikationer

Mærke:	Raspberry Pi
Kategori:	Ikke kategoriseret
Model:	Model A+
Bredde:	66 mm
Dybde:	56 mm
Højde:	14 mm
Kompatible hukommelseskort:	MicroSD (TransFlash)
Wi-Fi:	Ingen
Ethernet LAN:	Ingen
USB version:	2.0
Antal USB-porte:	1
Processorfrekvens:	700 MHz
Intern hukommelsestype:	SDRAM
Maksimal intern hukommelse:	- GB
Processormodel:	ARM1176JZFS
USB-drevet:	Ja