Difference between revisions of "Arduino"
(→connecting blue tooth modem to arduino) |
(→Bluetooth 220 V voltage switch) |
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| Line 4: | Line 4: | ||
Needed: | Needed: | ||
* Arduino board | * Arduino board | ||
| − | * 5v relay for arduino | + | * 5v relay for arduino (http://www.play-zone.ch/de/2-kanal-relais-modul-karte.html) |
* bluetooth modem (https://www.sparkfun.com/products/12577) | * bluetooth modem (https://www.sparkfun.com/products/12577) | ||
* android sdk | * android sdk | ||
Revision as of 11:46, 4 May 2014
Bluetooth 220 V voltage switch
Control a household lamp with your smartphone.
Needed:
- Arduino board
- 5v relay for arduino (http://www.play-zone.ch/de/2-kanal-relais-modul-karte.html)
- bluetooth modem (https://www.sparkfun.com/products/12577)
- android sdk
- android phone
- jumper wires
connecting blue tooth modem to arduino
Important thing is that your modem supports 5v power. Many boards are built for 3v. Only four wires needed:
- Connect grd on arduino to grd on modem
- Connect 5v of arduio to vcc on modem
- Connect arduino digital pin 2 to tx on modem
- Connect arduino digital pin 3 to rx on modem
Do not use pins on arduino that have a tx and rx printed on them. They are used to communicate with your pc while connected by usb.
connecting relay to your arduino
This is straight forward too:
- Connect grd on arduino to grd on relay module.
- Connect 5v of arduino to vcc on relay module.
- Connect digital pin 13 to Ch1 or In1 on relay module.
- Connect digital pin 12 to Ch2 or In2 on relay module.
- e.c.t.
