I have been reading all the low power posts and techniques for days but am stuck at 45uA in sleep for my ATMEGA328p + RFM95 (915MHz) node. I have removed all resistors and other components on the board. All I have is a MCP1703 – ATMEGA328P – RFM95 The uC is connected like this: Pin 10 - NSS Pins…

Its hard to say, but I’ll try to give it a shot: are you using Arduino Pro mini? what firmware loaded onto atmega328p / what fuse settings? Normally, you should start with just a bare atmega328p board and sleep (lowpower from rocketscream is good). Then you add peripherals and more software (rfm9…

The board is called an Anarduino, but it looks identical to a Moteino that I have. The bootloader is Duemilanove. I’ve removed everything from the board except for the MCP1703, the reset button and led. I’ll find a schematic. I was thinking about the fuses. Is there anything I should be looking for…

I know this board, but I have not had any experience with it. With Molteino you get 5uA straight out of the box. These are my fuse setting for my atmega328p tqfp (8Mhz internal oscillator, disabled BOD) board atmega328_384_8.bootloader.low_fuses=0xE2 atmega328_384_8.bootloader.high_fuses=0xDE at…

Another suggestion, please upload this sketch (change the pins) #include <LowPower.h> #include <lmic.h> #include <hal/hal.h> //==================THIS HAS TO BE CHANGED============ #define LMIC_NSS 10 #define LMIC_RXTX LMIC_UNUSED_PIN #define LMIC_RST A0 #define LMIC_DIO0 2 #define LMIC_D…

[image] Full Arduino Mini LoraWAN below 1uA Sleep Mode End Devices (Nodes) Hi Guys, I’d like to introduce my new demo node, no wire, just battery powered, Arduino Mini 3.3V 8Mhz. I created a demo for a customer with a fully Temperature Humidity sensor (I2C SI7021) with Ba…

[image] bborncr: Any tips? I am running out of ideas. Are you actually setting up the RFM95 to go into sleep mode itself ? My own preferance for working on issues like this is to start with the bare board, no added components, and ensure sleep is in the 1uA region. Then add say the RFM95, m…

That’s the best way to do this :wink: For reference, to put quickly RFM95 into sleep mode //Set NSS pin Low to start communication digitalWrite(LORA_CS,LOW); //Send Addres with MSB 1 to make it a write command SPI.transfer(0x01 | 0x80); //Send Data SPI.transfer(0x00); …

Thanks for all the help! @alexsh1 Your code gives me 45uA. @alexsh1 I am going to change the bootloader, I don’t know why it has Duemilanove. @LoRaTracker You are right, next thing to try is to isolate the RFM95 completely. @Charles This code gives 5mA…maybe there is something missing? Being a…

Sorry, I don’t see any SPI.begin() initialization, may be your problem ?

Of course, I should have seen that!

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Trying to get below 10uA in sleep

End Devices (Nodes)

BoRRoZ July 12, 2018, 9:45am 6