Difference between revisions of "315Mhz RF link kits - with Encoder and Decoder"
(Created page with "==Overview== right The Transmitter and Receivers modules both have a hardware selectable address settin...")
|Line 18:||Line 18:|
Revision as of 09:45, 28 May 2014
The Transmitter and Receivers modules both have a hardware selectable address setting and will only communicate with each other if they are assigned the same unique address. Both modules have 8 different address pins, with three possible settings for each pin, High, Low, and Unconnected, for a total of 6561 possible addresses.
- Frequency: 315Mhz.
- Modulation: ASK
- Working Voltage: 3-12VDC（Transmitter), 5VDC(Receiver)
- Receiver Sensibility: -105dbm
- Emission Distance: 100m in open ground
- Defaultly 315Mhz receiver, exchangable with 433Mhz receiver.
This kit is not suitable for data transfer but remote control. Safe for 2 commands/second.
Encoding and Decoding
The popular link is like this: MCU -> Encoder -> Transmitter ------ Receiver -> Decoder -> MCU, PT2262(Encoder) and PT2272(Decoder) are optional, their existence is to 1)avoid confusing when multiple RF links in range 2) isolate disturbance. You can integrate the encoding and decoding work to the MCUs on both side. Whenever there is no 315Mhz devices around, you may use it as direct cable connection. To setup a PT2272 and PT2262 link, you would need to set PT2262 by a little soldering.