Week 4 - Continuation of Bluetooth modules and working on speed sensing & voltage sensing
Hc-05/06 Bluetooth modules Finding out the problem... Most of the week is spent on troubleshooting on the Bluetooth and Wifi modules. Both faces a similar problem: unable to initiate AT commands while in AT mode. After spending an entire week on troubleshooting, the problem has been fixed. No matter what was done, or any command's issued, none of the commands worked at all, even though the Bluetooth modules were in AT mode. It is most probably due to some settings that were done in the HC-05 that permanently binds the master and slave together, hence disabling ALL activities other than communication purposes (sending and receiving to and fro). It is likely due to either of the following two commands that blocked ALL the AT commands: AT+BIND= 3014,11,192230 // to bind AT+CMODE=1 // Set the HC-05 to only connect with paired devices The first problem... Figure 1: Pinout of HC-05 & HC-06 During the first few days of t...