[kenneth22]

Hi can bluno be put into low power mode?

how do i do that and when it wakes up will how long will the blue tooth wakes up

is it possible to maintain the bluetooth connection with andriod but in low power mode?

[Grey.CC]

Hello Kenneth,

I am sorry, it doesn't support low-power-consumption mode now.
What do you want to do with this mode?

[kenneth22]

Hi Grey,

I am doing a battery power device . when i leave the device on with a 9V battry it will drain to only 7V in 2 hours . to fast . The Bluno is connected to a sensor that will read when the connected device trigger its . So i want to put the bluno to sleep or low power mode until a trigger by the user which can be a UART operation complete sending some data to the device.  How can i do that . do you know what is the power rating of the bluno when it is paired and connected to a andriod phone?

[Grey.CC]

What is about a DC power adapter?

[kenneth22]

not an option where do i get the power rating of the bluno ?

[Grey.CC]

Hello Kenneth,

It is hard to describe its power consumption. You know Bluno is not only a wireless chip, but also a micro controller. Its power consumption depends on the load, the other device on the board. What is your battery type  and capacity?

[kenneth22]

Its lithium ion 2300 mha . i want it to last for a week as it will only update somestuff when it is triggered. Is it possible to put the bluetooth radio to sleep and wake on interrupt or when there is a UART activities? I wanted to know if i can talk to the chip directly

[Grey.CC]

Hello Kenneth,

I got a way to disconnect the BLE connection via AT command. It could save the power consumption in this way.
AT+FSM=FSM_USB_COM                                    //Disable BLE connection
AT+FSM=FSM_TRANS_USB_COM_BLE                //Enable BLE connection
You could let arduino input AT command to disconnect/connect BLE to save power.

[kenneth22]

How do i send AT command to the Bluno . Is there a way to talk directly to the CHIP ?

[Grey.CC]

Using code like this "Serial.write("+++");" to enter the AT mode,
And input the switch AT command, when it need. "Serial.println("xxxxxxxxxxxxx");".

BY the way, don't forget to exit AT mode.