@nebrius @tharnach Sorry about the delay in answering, I haven't been on gitter for a while. I haven't used pigpio bit bang serial and don't know how reliable it is. That being said I've no objections to making it available via the pigpio Node.js wrapper. However, even if it is added I'm not sure it's going to help because as far as I know Johnny-Five only supports I2C communication with the BNO055. It doesn't support UART communication.