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SIM7600 HAT (WaveShare), 4G Modem

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babak7293:

I am trying to achieve the sleep mode where current consumption will only be few miliamps but it would still be able to receive text messages.

I am using the TX,RX and the DTR pin to put it in sleep mode and wake it up.

According to docs, I send AT+CSCLK=1, and also pull up DTR, the NET LED goes off so i believe is in sleep mode. However the current is about 25 mA still. It should be few mA.

Has anyone managed to put SIM7600 HAT into sleep mode? is a hardware change required (de-soldering something)

Emo:
Hi Babak7293,

Sitcom does have a manual listed on its site specific for this situation; SIM7X00 Series_Sleep Mode_ Application Note
You might have it already, otherwise you could request a copy

Eric

Kalvin:
Are you using GPS? Have you also disabled GPS while in sleep state?

babak7293:
thanks, I have turned off the GPS using AT+CGPS=0. I have already looked at that sleep application document, but still not able to get the current consumption down to few mA.

Kalvin:
It looks like there have been similar issues with Lilygo's module. Lilygo's module is not identical to your module, but quite similar.

"Power consumption of SIM7600 in sleep mode #13"
https://github.com/Xinyuan-LilyGO/T-SIM7600X/issues/13

Please read the whole thread carefully before taking actions, though.

Hope that helps.

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