Hello, I'm new to Arduino projects. I am following a tutorial to build a laser tag system in which a ESP8266 was used with a JQ6500. I'm using the 28p version of the mp3 player. when I went to test the mp3 player on a bread board. I used the bread board power supply at 3.3v. (which is what the fritzing diagram showed it was connected to). got nothing but crackling. switched it to 5v and worked perfectly. the data sheet said the mp3 would work between 3.3 and 5v, but optimal is like 4.2v. I am wondering what to do from here. the esp uses 3.3v so how to I connect the esp to the player that uses 5v? (I'm thinking things were left out of the fritting diagram as there were no resistors on it, and I can't seem to reach the person that created the tutorial. any thoughts on how I can proceed?
You can send the "JQ" TX back to the ESP through a voltage divider.
The devboard's 3V3 is minimal, using it to run the "JQ" is folly.
If this information is correct
https://sparks.gogo.co.nz/jq6500/index.html
Quote:
Note also that with a 5v Arduino if talking to the device over serial you should use a 1k resistor in series between Arduino TX and JQ6500 RX.
the board should be powered by 4.2 or 5V but it uses 3.3V digital output/input level.
Another quote from the linked source says:
Insufficient Power Symptoms
The most common problem you will experience when your power supply is not up to the task is a “tick tick tick tick” type of sound, usually followed by a reset, either at the start of playing a track or sometime during (when the volume of the track increases).
A computer USB port is probably not sufficient, if you want to power from the USB socket then I suggest to use a USB power supply capable of 1A at least, and a reasonable quality cable able to deliver that full 1A without dropping much voltage – remember, if your cable is long or poor or both then it throws volts away that the MP3 player needs!
Good luck!
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.