HT-M02 4G Power Options

#1

Hey,

I’m considering purchasing a HT-M02 gateway, however, I’m a little concerned about how to power the system. In the technical spec section of the product description page (https://heltec.org/project/ht-m02/) it is stated that the device can run off 220v/110v or PoE at 51v. However, it is inferred that the 4G variant does not come with PoE.

The company I work for plan to deploy a gateway in a remote location, using batteries and a solar panel to provide power - utilising the 4G/3G network to sending data to chirpstack or TTN.

How would we go about powering the device? Am I correct to assume PoE is not available with the 4G variant?

It seems like poor practice to have to use a DC-AC step-up converter on the battery. Is this my only option?

Thanks in advance!
Joe

#2

hi,

The 4G version and the POE version are completely independent.

The power source of 4G version is 110V/220V.

The power source of the POE version is POE(please refer the picture).

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图片.png776×746 52.5 KB

We also have an idea for M02S, battery powered and solar charging. This project has just started, not sure when it will be available to consumers

#3

This may not be practical. we have another lora gateway(USB TYPE C power supply): HT-M00 https://heltec.org/project/ht-m00/

you can think about it.

#4

Hey Jason,

Thanks for getting back to me so quickly!

The issue with the HT-M00 is the lack of cellular uplink.

#5

Hey,

So the only way I could power the HT-M02 4G variant from a battery & solar would be through using something like this attached to the output of my solar converter?

#6

Same problem for me! @jasonXu about the HT-M00 do you have the 915 version working with cube cell? Can you guys provided an arduino code with the channel mask configured for two channels?

#7

hi,

you can refer the url:

https://heltec-automation-docs.readthedocs.io/en/latest/gateway/ht-m00/connect_to_gateway.html#channel-frequency