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Using RFM69 with Arduino Nano
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Topic: Using RFM69 with Arduino Nano (Read 13795 times)
Richelsdorfite
NewMember
Posts: 23
Using RFM69 with Arduino Nano
«
on:
October 21, 2013, 03:39:10 PM »
Hi,
I want to use RFM69 module with an Arduino Nano V3.
As RFM69 levels seem to be 3V3 and the logic levels of the Nano are 5V, should I use an adapter level ?
Regards,
Michel
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Richelsdorfite
NewMember
Posts: 23
Re: Using RFM69 with Arduino Nano
«
Reply #1 on:
October 22, 2013, 03:50:16 AM »
Silly question = simple answer "Yes".
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Felix
Administrator
Hero Member
Posts: 6866
Country:
Re: Using RFM69 with Arduino Nano
«
Reply #2 on:
October 22, 2013, 08:11:49 AM »
The easy way out is to give it 3.3V power and use 10K/4.7K resistors for the data lines, except MISO which doesn't need it since it's input
FROM
the RFM69/RFM12B module.
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Richelsdorfite
NewMember
Posts: 23
Re: Using RFM69 with Arduino Nano
«
Reply #3 on:
October 29, 2013, 04:21:06 PM »
Ok, I made a first try.
But the Nano don't like.
I connect the RFM69 to the Nano like:
First side:
NC is not connected.
NSS is an input for RFM69 so I use a voltage divider and connect to Nano328 D10
MOSI is an input for RFM69 so I use a voltage divider and connect to Nano328 D11
MISO is an otput for RFM69 so I
don't use
a voltage divider and connect to Nano328 D12
SCK is an input for RFM69 so I use a voltage divider and connect to Nano328 D13
GND is not directly connected to the Nano as it's connect to the other GND
Antenna to a 16,5 cm antenna as I use a 433MHz
GND is connected to Nano ground
Second side:
Reset is not connected .
DI00 is an input for RFM69 so I use a voltage divider and connect to Nano328
D12
D2
DI01&02&03&04&05 are not connected
3.3V is connected to Nano 3.3V
I use the Gateway sketch and the Node sketch, none of them work.
I presume that the wire length between the Nano and the RFM 69 should be minimized to prevent interference ?
When I connect the RFM69 power to the Nano 3V3, the Nano does not seem to hold the power demand and restarts.
Any idea :-)
Michel
«
Last Edit: October 30, 2013, 03:13:22 AM by Richelsdorfite
»
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Richelsdorfite
NewMember
Posts: 23
Re: Using RFM69 with Arduino Nano
«
Reply #4 on:
October 29, 2013, 04:33:14 PM »
Arg!!!!!
DI00 seems to be an output !
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Felix
Administrator
Hero Member
Posts: 6866
Country:
Re: Using RFM69 with Arduino Nano
«
Reply #5 on:
October 29, 2013, 05:37:46 PM »
All the DIOs are outputs FROM the RFM69.
Oh and DIO0 is supposed to go to D2.
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Richelsdorfite
NewMember
Posts: 23
Re: Using RFM69 with Arduino Nano
«
Reply #6 on:
October 30, 2013, 06:36:09 AM »
I think the 10k/4.7k voltage divider is not good for time constant.
I try and the output signal from the Nano which are similar with the signal from Moteino the first 5V and the second 3.3V and this voltage divider change the signal.
So I find
http://electronics.stackexchange.com/questions/21055/voltage-level-shifting
and try a voltage divider made with 2k/1k, the signal from D13 is not change only the level.
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Richelsdorfite
NewMember
Posts: 23
Re: Using RFM69 with Arduino Nano
«
Reply #7 on:
October 30, 2013, 07:19:11 AM »
And................................
It's working good !
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Felix
Administrator
Hero Member
Posts: 6866
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Re: Using RFM69 with Arduino Nano
«
Reply #8 on:
October 30, 2013, 08:21:02 AM »
Cool.
Just FYI - the 1k/2k will eat more power though.
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Sirocco
NewMember
Posts: 8
Re: Using RFM69 with Arduino Nano
«
Reply #9 on:
March 01, 2014, 01:45:38 PM »
Hello people.
Richelsdorfite, could you use RFM69W with Nano with the wiring which you describe above ? And will it be right for the Mega and Uno also ? ?
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Richelsdorfite
NewMember
Posts: 23
Re: Using RFM69 with Arduino Nano
«
Reply #10 on:
April 08, 2014, 03:05:23 PM »
Yes, of course.
But the purpose of my setup was to try not to use. So I have no feed back.
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LowPowerLab Forum
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Using RFM69 with Arduino Nano