I am a complete Arduino / RFLink beginner.
I have just received a RFLink 433.42 Mhz kit from nodo-shop (precisely this one : https://www.nodo-shop.nl/en/rflink-/195 ... cable.html).
For reference, here is the relevant documentation :
RFLink : https://nodo-shop.nl/nl/index.php?contr ... achment=21
Aurel RF chip : https://www.aurelwireless.com/wp-conten ... 33G_um.pdf
(The manual says 433.92 but I did order 433.42 ; the exact Aurel reference engraved on the chip is RTX-MIDL-5V).
1) Could you confirm I did assemble things correctly ? From what I gather, I just had to plug the green board (with the Aurel chip) onto the main Arduino board and screw the antenna. is there anything else ? This is what the end result looks like (clickable link for a larger image) :
![Image](https://i.ibb.co/rxY81Tt/RFLink-PXL-20220125-162900870.jpg)
2) There was no charger / power included. I did have one from another RFLink... Do I need it or not ?
3) Is there "anything else" to do before using the board ?
Now for what I'm trying to achieve. I need to use the RFLink as a receiver to get RF frames from an equipent of mine. The script I want to use is available here : https://github.com/ChristopheHD/frisque ... decode.ino
I have no issue launching the Arduino IDE, identifying the right COM port, compiling and sending the script to the Arduino. All this seems to work : adding a "Hello World" in the setup() of the script, and launching the serial monitor, I do see the "Hello world" message, so it seems like the Arduino runs the script.
The problem is that never see the RF frame I am looking for (while I should) (I never get anything).
From what I gather, at least one issue lies in the definition of the PINs in the script that is not correct / does not match my hardware. As written, the script defines and uses
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#define PIN_RF_TX_VCC 15 // +5 volt / Vcc power to the transmitter on this pin
#define PIN_RF_TX_DATA 14 // Data to the 433Mhz transmitter on this pin
#define PIN_RF_RX_VCC 16 // Power to the receiver on this pin
#define PIN_RF_RX_DATA 19 // On this input, the 433Mhz-RF signal is received. LOW when no signal.
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D14 DAT IN Transceiver
D15 TX / RX Transceiver
D19 DAT OUT Transceiver
[...]
D22 ENABLE Transceiver
Data IN (thus Aurel PIN 4, Arduino PIN 14) at 0
TX/RX (thus Aurel PIN 5, Arduino PIN 15) at 0
ENABLE (thus Aurel PIN 6, Arduino PIN 22) at 1
(and the digitalized received RF signal would then come out on Data OUT (Aurel PIN 9, Arduino PIN 19)).
Have I understood things well ?
Would it thus be enough, in the script, to replace the PIN definition section with
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#define PIN_RF_TX_DATA_IN 14 // Data to the 433Mhz transmitter on this pin
#define PIN_RF_TX_RX 15 // 0 = RX, 1 = TX
#define PIN_RF_RX_DATA_OUT 19 // RX output
#define PIN_RF_ENABLE 22 // 0=Power Down, 1=Active
Code: Select all
pinMode(PIN_RF_RX_DATA_OUT, INPUT); // Initialise in/output ports
pinMode(PIN_RF_TX_DATA_IN, OUTPUT); // Initialise in/output ports
pinMode(PIN_RF_ENABLE, OUTPUT); // Initialise in/output ports
digitalWrite(PIN_RF_TX_DATA_IN,LOW); // 0 ?
digitalWrite(PIN_RF_TX_RX,LOW); // 0 ?
digitalWrite(PIN_RF_ENABLE,HIGH); // 1 ?
digitalWrite(PIN_RF_RX_DATA_OUT,INPUT_PULLUP); // pull-up resister on (to prevent garbage)
Is there also a Vcc somewhere to do something with or is it good / already covered by the ENABLE ?
Is there anything else that needs to be done ?
I am wary of testing directly, because as a beginner a) I am so far out on a limb that I am certain I am missing things and b) I am thus afraid to potentially harm the chip.
Would you know how to help me ?
Thanks a lot