Huamao version control looks to be as good as mine…. It does include AT+PACK which was introduced in v702 though. The data sheet in the download shows v606/v701 and is not up-todate it does not include the new AT+READOF command and has the old AT+CO command. The docs zip file is available by clicking on one of the HM-10 images on the Huamao Technology products page or download directly here. The differences are usb pads and a crystal.ġ – with usb pads and the additional crystalĢ – with usb pads without the extra crystalģ – no usb pads but with the additional crystal

I thought it was time for a minor update. There have been several firmware updates since this guide was written, as of March 2020 the latest is v707.

For the main article I am using modules with firmware 5.49 (regular) except the one I am using for the firmware update guide which started with v5.40 and become 5.47.

Since I first posted about the HM-10 the firmware has been updated many times and some of the commands have changed.