Review on 🔑 Keywishbot BLE Nano V3.0 - Micro USB Board with Integrated CC2540 BLE Wireless Module and ATmega328P 5V Micro-Controller - Compatible with Nano V3.0 by Agonia Ajdini

Hardware OK. Micro-USB is good (compared to mini-USB) and the basic Arduino Nano functions work. But the BT module interface is garbage. Documentation is garbage. shit firmware. You can connect it to BT module and send commands, but it is unreliable compared to other modules. Reloads constantly. Send wrong AT command? Be prepared to be answered with a "bad general". If they can't play the most common dialogues correctly without typos, you can be sure that the rest of the firmware is performing poorly. I'm suspicious of the 5-star ratings on this board and other essentially identical boards (e.g. emakefun. exact same github files). Fraud. This module is not worth your time.