I just got 3 of the WRL-17146 WiFi modules and have been trying to get them to work. I’ve read the documentation provided via links from the product page and that doesn’t help. The module is connected to 3.3V & Gnd from a Parallax Propeller FLIP module and a simple loop-back program at 115200 Baud echos anything typed on my Mac to the module and vice-versa. The module does this, but won’t respond to the AT codes. The program ties “En” to logic 1 (3.3V) and pulses RST 20ms to logic 0 (Gnd). The module does respond with what looks like garbage characters, but may be Unicode Chinese followed by “ready”. It still doesn’t respond to the AT commands. I’ve tried this at 57600 Baud with no success. All 3 modules behave similarly. Any suggestions?
Baud should be 115200,N,8,1.
Does Parallax invert serial? The ESP8266 uses non inverted serial and that might explain the garbage characters.
If you have a FTDI handy, you might skip the FLIP board give that a try as a sanity check.