Hi I am having trouble hooking up the Bi-Directional Logic Level Converter to an arduino uno and bluetooth modul HC-06 the scheme is like the in the image I have checked and all components are working.
You do not say what the trouble is ?
We need the error report details / full description of the fault, plus your code and exactly which converter and bluetooth modules you are using.
The error is the red led light on the bluetooth module HC-06 I am using is not flashing a red light indicating it is working .
I am using a Bi-Directional Logic Level Converter on a breadboard connected to a bluetooth module HC-06 and arduino uno
You have no power going to the Bluetooth module.
Grumpy_Mike:
You have no power going to the Bluetooth module.
yes that is why I am asking yet the power supply is connected to the arduino
No it is not.
The Bluetooth module needs power and ground from the Arduino's 3V3 line and the ground pin in addition to the supply to the logic converter.
There are lines going to the high voltage port of the voltage leveler to the low V and then a line to the bluetooth module like in the image included in the post
The image does not show any wires that would carry power to the bluetooth module. If all you have are the wires shown then you are not powering the module. If you have extra wires then why did you not show them?
You have a logic level converter NOT a power converter, it will not power your blootooth module the way you have wired it up.
Those are the only wires so how do I transfer power to the bluetooth module?
robodoc99:
Those are the only wires so how do I transfer power to the bluetooth module?
Take a wire from the 3V3 on the Uno, to the LV input on the converter... use one of the vacant holes on the breadboard. Then that's electrically the same as the wire to the 3V3 on the bluetooth, so it's a) the LV reference for the converter and b) 3V3 power to the BT.
robodoc99:
Those are the only wires so how do I transfer power to the bluetooth module?
Read reply #5 I told you what to do.
Don't forget to also connect ground from the uno to the bluetooth module, or it will not work
tinman13kup:
Don't forget to also connect ground from the uno to the bluetooth module, or it will not work
There's Gnd continuity through the converter (I just measured mine).
manor_royal:
There's Gnd continuity through the converter (I just measured mine).
Yes but a beginner should not be taught to rely on that sort of thing.
He need to know things need powering with both a ground and positive voltage. It will no no harm that there is an accidental ground here as well. He is hard enough to tell things to as it is, so if he gets away with not connecting the ground here, he will only do it again resulting in frustration all round.
Good point, better to Gnd expicitly and deliberately.
Grumpy_Mike:
No it is not.
The Bluetooth module needs power and ground from the Arduino's 3V3 line and the ground pin in addition to the supply to the logic converter.
So it should look like this scheme then??
So the remaining connection is 3V3 on the Uno, to the LV input on the converter and gnd to LV on the converter right?
That is one wire, now put the ground wire in.
But why have you changed the signal wires?
Did I miss something?- that's not the same hardware.
Thank guys I made it work from the scheme