Generic ASK Modules

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Generic ASK Modules
Status
In Development
menuconfig I/O->Radio->Generic ASK
Pinning yes
Ecmd no
Control6 no
Uses Timer Timer 2 (RX)
Depends on -
Requires -
Code https://github.com/ethersex/ethersex/tree/master/hardware/radio/generic_ask
Generic ASK Module TX and RX (front)
Generic ASK Module TX and RX (back)
Shematic of TX Module
Shematic of RX Module

These modules are sourced from China and can be bougth via ebay.

They can be used as a cheap replacement for RFM12 to switch radio outlets.

Technical Specifications

  • Receiver module parameters
    • Product Model: MX-05V
    • Operating voltage: DC5V
    • Quiescent Current: 4mA
    • Receiving frequency: 433.92MHZ
    • Receiver sensitivity: -105DB
    • Size: 30 * 14 * 7mm
    • External antenna: 32CM single core wire, wound into a spiral
  • Transmitter module parameters
    • Product Model: MX-FS-03V
    • Launch distance: 20-200 meters (different voltage, different results)
    • Operating voltage: 3.5-12V
    • Dimensions: 19 * 19mm
    • Operating mode: AM
    • Transfer rate: 4KB/s
    • Transmitting power: 10mW
    • Transmitting frequency: 433M
    • An external antenna: 25cm ordinary multi-core or single-core line

Remark

  • VCC voltage module operating voltage and good power filtering;
  • Great influence on the antenna module reception, preferably connected to the 1/4 wavelength of the antenna, typically 50 ohm single conductor, the length of the antenna 433M of about 17cm;
  • Antenna position has also affected the reception of the module, the installation, the antenna as possible straight away from the shield, high pressure, and interference source; frequency used to receive, decode and oscillation resistor should match with the transmitter.

Connection

The DATA pin of the transmitter module is named GENERIC_ASK_TX in Ethersex's pinning. The example below uses PA0.

   ifdef(`conf_GENERIC_ASK', `dnl
     pin(GENERIC_ASK_TX, PA0, OUTPUT)
   ')dnl
TX Module
Pin Description
1 GND
2 VCC (3.5-12V)
3 DATA
RX Module
Pin Description
1 GND
2 DATA
3 DATA
4 VCC (5V)

Configuration

First enable the hardware and then select it in the protocol section.

 | |       I/O  --->                                                        | |
 ... 
 | |           Radio  --->                                                  | |
 ...
 | |                [*] Generic ASK (433MHz)                                | |
     
 | |       Protocols  --->                                                  | |
 ...
 | |           Radio  --->                                                  | |
 | |                [*] Radio outlets (433MHz)  --->                        | |
 ...
 | |                    (Generic) Transmitter hardware                      | |
 | |                    [*] Pollin/Kangtai Powerswitch (IC 2272)            | |
 | |                    [*] Pollin Powerswitch buried (IC 1527)             | |
 | |                    [*] Tevion Powerswitch                              | |
 | |                    [*] Intertechno ITS-150                             | |
 | |                    [*] Intertechno Self Learning                       | |
 | |                    [*] Oase FM Master                                  | |

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