DOIT.AM
®
User Manual for TTL-WiFi DT-06
Shenzhen Doctors of Intelligence & Technology Co., LTD (www.doit.am) Copyright@2014-2017 Page
7
If at STA mode, the module is trying to connect the wireless router;
If at AP+STA mode, the module is trying to connect to the wireless
router.
3 Fast
lighting
When press SW1/Flash button, if the serial received the data, or the
network received the data from the serial, LED would light fast.
4 Extinguish
WiFi module doesn’t work since the power isn’t normal or isn’t the
transparent transmission firmware.
Definition of pins is listed as follows.
Table 2.3 Definition of pins
Num
Pin
Type
Function
1 STATE
I/O
GPIO4;
built-in transparent transmission firmware, to show the net
connection status: connect to wireless router at STA mode. STATE
is low level.
2 RXD
I/O
GPIO3;
Module is already serially connected to a 22
Ω
current-limiting resistance in
the inner, thus can connect 5.0V voltage;
Can used as the UART Rx when built in the flash.
3 TXD
I/O
GPIO1;
Module is already serially connected to a 22
Ω
current-limiting resistance
in the inner, thus can connect 5.0V voltage;
Can used as the UART Tx when built in the flash.
4
GND
P GND
5
VCC P
Module
power:
4.5V~6.0V, recommended voltage is 5.0V
6 EN I
Enable, high level: enable to let chip work normally; low level, chip is
closed.
3. Usage of Web configuration
This module is already built-in the HTTP Server. Thus, it can configure the parameters by the browsers
on pc or mobile phone or other smart devices, without of need of any other tools or Apps. In the factory
settings, the module works at AP mode, and the signal is “Doit_WiFi_xxxxxx” , where, “xxxxxx” is the
last 6 number of MAC address of this module. Then, one can connect this WiFi hotspot by PCs or
phones , and other smart deveices (supportable Android and Ios, Windows) with no password.
