I ordered 2 PCS ABBLEShield Bluetooth low energy 4.0 Module iBeacon/Arduino/iOS/Android, and am unable to get them to answer AT commands.
I can confirm with a BTLE sniffer that the boards power up. However, neither module answers any AT commands.
I’ve tried linking the CP2102’s TX->RX, and confirmed that the CP2102 and PC both do work properly. (also confirmed the 4 pin cable!)
I even went as far as to buy the “CP2102 USB To UART converter Supports ESP8266” from you guys in order to be sure my CP2102 was not defective… It doesn’t work with your adapter either.
I hooked it up with VCC->+5V; TX->RX; RX->TX; GND->GND… I’ve tried with both 3.3V and 5.0V.
I’ve tried many different AT commands, like AT or AT+NAME, etc. I get no character echo either, which I would expect.
I always used 9600/n/8/1. I tried both Putty and CoolTerm.
What can I do?