Hi there,
I have set up an AT3 module to transmit frequency data on 2 channels and temperature and battery interleaved on a 3rd channel.
I want to run the system outside on a field with app. 10 m line of sight, 5 m above ground.
I have found that everything works fine if sender and receiver are only 1 or 2 meters away from each other.
In the desired setup with 10 m los I find that only one channel of the frequency reporting channels is received and the battery data message of the 3rd channel.
This is purely a function of transmission distance.
The AT3 programming is found at the end of this message.
The receiver is a AT1 module setup according to the AT3 settings. I find this with different AT1 modules.
The AT3 module is directly battery powered by 2 AAA batteries in series (the battery reading is 2.6 V).
The frequency reading ports are connected to read relais and equipped with pull-up/pull-down resistors (10 kOhm), respectively.
The receiver is e.g. the development board USB module connector, else I have one module connected to an FTDI USB-TTL-serial converter.
Questions:
How come channels have different transmission range?
What can I do about it?
TIA + Best Regards,
Peter
--------------------------------------------AT3 setup--------------------------------------------
C [42][00][50][00] // Assign Channel Master Tx Only on ANT chanel 0 on network 0
C [51][00][FA][00][01][05] // Assign Channel ID 0, Dev. Num = 250, Dev. Type = 1, Trans. Type = 5
C [43][00][00][20] // Set ANT Channel 0 Message Period to 4.00 Hz
C [45][00][42] // Set ANT Channel 0 RF Frequency to 2466 MHz
C [60][00][04] // Set ANT Channel 0 Tx Power to max dB
C [91][00][00][42][00][01][00] // Configuring Data Channel 0 on ANT Channel 0 as Counter Input using pin(s) 00 reporting on 100.00% of messages
C [42][01][50][00] // Assign Channel Master Tx Only on ANT chanel 1 on network 0
C [51][01][FB][00][01][05] // Assign Channel ID 1, Dev. Num = 251, Dev. Type = 1, Trans. Type = 5
C [43][01][00][20] // Set ANT Channel 1 Message Period to 4.00 Hz
C [45][01][42] // Set ANT Channel 1 RF Frequency to 2466 MHz
C [60][01][03] // Set ANT Channel 1 Tx Power to 0 dB
C [91][01][01][42][01][01][00] // Configuring Data Channel 1 on ANT Channel 1 as Counter Input using pin(s) 01 reporting on 100.00% of messages
C [42][02][50][00] // Assign Channel Master Tx Only on ANT chanel 2 on network 0
C [51][02][FC][00][01][05] // Assign Channel ID 2, Dev. Num = 252, Dev. Type = 1, Trans. Type = 5
C [43][02][00][20] // Set ANT Channel 2 Message Period to 4.00 Hz
C [45][02][42] // Set ANT Channel 2 RF Frequency to 2466 MHz
C [60][02][03] // Set ANT Channel 2 Tx Power to 0 dB
C [91][02][02][41][FE][02][00] // Configuring Data Channel 2 on ANT Channel 2 as Analog Input using pin(s) FE reporting on 50.00% of messages
C [94][00][02][09][01][08][00][00] // Configuring Data Channel 2 A/D with reference setting of 9, sampling at 1.00 of sample rate, filter N value of 8
C [91][02][03][41][FF][02][01] // Configuring Data Channel 3 on ANT Channel 2 as Analog Input using pin(s) FF reporting on 50.00% of messages
C [94][00][03][09][01][08][00][00] // Configuring Data Channel 3 A/D with reference setting of 9, sampling at 1.00 of sample rate, filter N value of 8
C [4B][00] // Open ANT chanel 0
C [4B][01] // Open ANT chanel 1
C [4B][02] // Open ANT chanel 2
