WR841N V13 USB Mod

Hardware Questions and Recommendations
1

Hello,

i have succesfully modded a new TL-WR841N and added a USB Port (active HUB).

Can anyone add this information to the Hardware-Pages (LEDE/Openwrt wiki?).
I added some Pictures.

I do the following steps:

  • got LEDE from GIT and build them
  • modify DTS (adding gpio_export below gpio-keys)
    gpio_export {

            compatible = "gpio-export";
            #size-cells = <0>;

            usb {
                    gpio-export,name = "usb";
                    gpio-export,output = <1>;
                    gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
            };
    };
  • modify build via menuconfig (added USB-EHCI Module)

THX TP LINK for this nice hardware upgrade

more images at: http://intern.gdv-it.de/wr841v13-usb/

wr841v13mod
wr841v13mod1375×617 173 KB

2
  • additional added to the end of dts file:

&ehci {
status = "okay";
};

&ohci {
status = "okay";
};

3

small correcture,, leave DTS file unchanged and only add:

&ehci {
status = "okay";
};

at the end of the file.

2 Likes
5

But remember about 3.3V at USB if you do like this guy. Better don't connect AVDD33_USB PIN, this output gives only 3.3 volts. Use dedicated USB power scheme or use powered USB HUB.

6

Here is my little USB MOD. I changed DC Power Adapter to 12v 2A, and i use step-down converter to power-up USB port, so i can connect LTE modems, flash drives or all together without need of self powered USB HUB.



7

I tell you what is DTS I could not do it please help me

8

Help dts file

11

/openwrt/target/linux/ramips/dts/TPLINK-8M.dtsi
/openwrt/target/linux/ramips/dts/TL-WR841NV13.dts

12

please give me builded image with usb support

13

Guys, can you please measure router power consumption or at least current it takes from 9V power supply at idle ? I'v seen it consumes 1Watt (top 1 power efficient router with modern openwrt) but that does not look true... Can you confirm that ?