missing schematic

[pacav69]

Hi Mick,
I know that your busy, so if you could email me a hand drawn schematic of your new talking clock i'll create an electronic version for you.

Cheers mate
Paul C

[proddy]

@pacav69 do you make a schematic in the end? I'm trying to figure out why a logic level converter was used since the ESP32 will provide both 3.3V and 5V.

[pacav69]

@pacav69 do you make a schematic in the end? I'm trying to figure out why a logic level converter was used since the ESP32 will provide both 3.3V and 5V.

@proddy i never received a schematic from mick so it was never done. I don't know why a logic level converter was used.

[pacav69]

@proddy i think the logic level converter would be used for the RX and TX pins between the firebeetle and DFPlayer, perhaps it was used as a safety measure. Enclosed is my draft schematic of the clock.

[proddy]

I think it also used to power the DFPlayer which I read doesn't really like 5V, but plays nicely at around 4.1V.

[pacav69]

looking at the specs it states 3.7v - 5v but i suspect i should be 4.2v which would make the voltage in the middle of 3.7v the value of a lipo battery

[proddy]

I'm using 5V on my design and its working fine. I had so many issues with DFRobots mp3 library I ended up using https://github.com/Makuna/DFMiniMp3

[pacav69]

@proddy thanks for the tip, i might use it when i get around to putting it together.