Review on 🔗 DSD TECH HM-10 Bluetooth 4.0 BLE iBeacon UART Module & 4PIN Base Board for Arduino UNO R3, Mega 2560 & Nano by Maria Hase

I got this HM-10 working but with very little documentation help and no help from DSD Tech. If you are an experienced electronics hobbyist/engineer/technician you might be able to get it working. Although the documentation says it runs on 3.6-6V, you really only need 5V. The Rx input requires a maximum of 3.3 volts, so you'll need to use a voltage divider to divide the output from say an Arduino Nano reduce module. But the voltage divider may already be on the motherboard, but there is no documentation on the motherboard. If you receive one of these HM-10, make sure you only refer to the HM-10 AT command set when using any of the AT commands, as each HM module has a different command set. Also note that cr/lf is not used when sending AT commands. I originally gave these HM-10 modules 1 star but after using them for some time I think they work very well and have a very good range.