Owner's Manual

6
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2021 Ryze Tech. All Rights Reserved.
setbitrate bitrate
Set the video stream bit rate. The bitrate parameter
species the bit rate, with a value range is 0 to 5,
indicating auto, 1Mbps, 2MBps, 3Mbps, 4Mbps, and
5Mbps, respectively.
ok / error
setresolution
resolution
Set the video stream resolution. The resolution
parameter species the resolution, whose value
can be "high" or "low", indicating 720P and 480P,
respectively.
Read Commands
Command Description Possible Response
speed? Get the current set speed (cm/s).
x
x = (10-100)
battery?
Get the percentage (%) indicating the current battery
level.
x
x = (10-100)
time? Get the motor running time (s). x
wi? Get the Wi-Fi SNR. SNR
sdk? Get the Tello SDK version number. xx(>=20)
sn? Get the Tello SN. Production SN
hardware?
Get whether TT is connected to an open-source
controller. If yes, it returns RMTT; if not, it returns
TELLO.
TELLO/RMTT
wiversion?
Query the -WiFi version of the open-source controller.
(Only applies to the open-source controller)
wivx.x.x.x
ap?
Get the name and password of the current router
to be connected. (Only applies to the open-source
controller)
Name and
password of
the router to be
connected
ssid?
Get the current SSID of the drone. (Only applies to the
open-source controller)
In STA mode:
factory default SSID;
in AP mode: user-
dened SSID and
password
multiwi ssid pass
Set the SSID and password of the open-source
controller. This feature supports connection to multiple
devices as a router.
ok / error
Open-source Controller->Tello Commands
To program the open-source controller ESP32, sending "[TELLO] (space)"+ UDP->Tello command
through a serial port can achieve the same effect as UDP->Tello command description. Note that
all commands that the open-source controller ESP32 receives from TELLO contain the "ETT (space)"
prex and "\r\n" (line break) sufx.
For example: Instruct the drone to take off via open-source controller ESP32.
ESP32->Tello: "[TELLO] takeoff"
Tello->ESP32: "ETT ok\r\n"