Thats the paradox, only the terminal app works , and nothing else.
One other thing is that it sometimes randomly says connection lost in the terminal app
Did you wire the HC-05 as @Nick_Pyner shows?
randomly says connection lost in the terminal app
The module need to be up in the air and not near any metal surfaces.
The range may vary from 10 feet to 30 feet.
No, as i already mentioned my 5V pin is not free, what shd i do?Is it ok to connect the l298 to the 3.3V pin then?
Oh this might be one of the problems, i will test it and get back to you.
I was just wondering why there is a wire from RXD to ground.
Also can i connect RXD and TXD to any other pins?
There is not. There is a voltage divider (1K and 2K resistors) on TX output from the Uno that reduces the voltage from 5V to 3.3V for the HC-05 RX input.
You van use any pin you want if you are using Software serial.
There's no need to connect the 5V pin of the Arduino to the L298(N) if you're feeding it with 2 Li-ion cells. You can place this jumper and allow the regulator of the L298 to provide 5V for the board.
Any progress?
No, I have switched to a different UI, it id bad but I can manage, I am unable to connect to the conventional apps and am using Serial Bluetooth Terminal. This is the UI:
I am using 3 li-ions now, I actually powered the HC-05 using the HC-05 using the ICSP pins. I missed your post actually, but after seeing it i have two questions:
- If I remove the 5V jumper will the motors go even slightly slower?
- My HC-05 randomly loses connection but this happens rarely. By removing the 5v jumper, will it help the HC-05 in any way?
Also I have not connected the RXD pin as I am not printing anything to the HC-05, only receiving info from it
In my post I was not suggesting to remove the jumper. I was suggesting to keep the jumper and remove the connection between +5V pin of Arduino and 5V pin of the L298N.
If the jumper is in place, the L298N uses its own regulator to get 5V for the logic part of the board, directly from the Li-ion batteries. If you remove the jumper, then you need to provide 5V for the L298N logic. Only in this last case it makes sense to connect the +5V from Arduino to 5V of the L298N.
Better than nothing, still don't understand why the other did not work. Worked great for me.
- If I remove the 5V jumper will the motors go even slightly slower?
It should already be removed.
Are you saying that you have it on?
My HC-05 randomly loses connection but this happens rarely. By removing the 5v jumper, will it help the HC-05 in any way?
It should already be removed.
Stick to HC-05 problems only in this topic, now it's getting confusing.
Yes, I have the 5V from arduino to the 5V in the l298.
OK sorry
It could be because I am using a rip off( It has no pin/password lol)
We better get this straight rightnow
This is the jumper everyone is refering to:
If you are supplying 5V to the +5V screw terminal input then the jumper MUST BE REMOVED
If you are not supplying 5V to the screw terminal +5V then it must be on
OH OK!
Sorry about the confusion i kept thinking jumper meant jumper wire and I was confused.
See post #24, I see from you other topic you have it pointing to the ground. No wonder you are having trouble.
I will not be responding to this topic any further only the other one as it's getting confusing.
In that case a photo of Bluetooth might not go astray. It could be that your real problem is that it isn't an HC-05 but an HM-10 masquerading as one.
Minimum supply voltage is writen on the back of the HC-05: 3.6volt.
So why are you starving it with 3.3volt.
Don't confuse supply voltage (3.6-6volt) with logic voltage of the data pins (3.3volt).
Leo..
I am powering it with the 5V ICSP Pin.
Additionally I have NOT connected RXD as I do not need to use it.
