DAOKI® 5 PCS U Disk Mini MP3 DFPlayer Player Module Audio Voice Board Shield for Arduino UNO

I guess some other reviewers got a bad batch but mine work perfectly. Very happy with how easy it was to wire up and get working! There is a great datasheet available on the web that has schematics for both stand-alone and Arduino integration.

Easy to setup, lots of code examples. Just beware to use a resistor to avoid noise and you will also need 4ohm speakers since 8ohm speakers volume is very low.

Good

The DFPlayer is fantastic. It's inexpensive, it works flawlessly, and it integrates easily with Particle Photons. I've used at least 5 of these players in projects, and I love them.

After having more time to work with these, I need to revise my review.I was having horrible noise issues. These come with zero documentation, and the official looking schematics you find online are all incorrect. You will find informal ones that are more accurate. Specifically: you cannot power these devices from the Arduino 5V supply. And in fact, you can't supply them off any 5V supply because you get awful noise bursts. You need to power these at appx 4.2 volts, and if you use the serial interface you should put ~1k resistors on your RX and TX lines between your microcontroller and these devices.Also, be aware there's no way to specify a file or folder by name. So while there's a serial interface, you can't tell it to go play "foo.wav." Instead, the files can only be referenced by number. It seems like a weirdly arbitrary restriction, given that it has an otherwise-rich set of serial port instructions.

My product is fine. Someone else said these where not the YX5200-24SSWell mine are here is pic of what I received.Hope this helps others.

Easy to use ESP8266 Arduino IDE DIY Projects

There are a lot of vendors out there selling these "DFPlayer" boards. I bought two sets of five from this particular vendor and all of the ones they sold us do not work with setups/code that do work with this type of board I got from other vendors. It seems that it boils down to the actual chip they are using. These are not the YX5200-24SS marked chips which actually have a datasheet and which you'll find on a lot of boards. These are some knockoff chip/or another run or something that say MH2024K-24SS on them (many with worn-out ink/printing). They also have MH-ET-LIVE printed across them...again highly variable in quality. Without speculating too much, maybe these are counterfeits or clones or busted chips that were bought/taken from a fab house and relabeled? I'm honestly not sure what MH-ET-LIVE is...google has some links but it just seems like some random hobby-electronics rebrander with little-to-no-documentation. Anyways I have no idea, but after spending quite a bit of time try to ring these chips out and comparing how a properly I've had no luck. They are all bricks (they draw some reasonable current...but do not respond to serial data that I know YX5200 series do, so I'm sort of at a loss. Every other component on these boards is identical to working boards so it is the chip...maybe this type of chip works normally and I got 10 out of 10 bad ones ? Maybe this isn't even a real chip and someone is just offloading a bunch of junk somewhere along the parts pipeline. Regardless, I have ten boards that are useless now. They are not mutually interchangeable and have no documentation at all online so are pretty much useless junk. Waste of money and very frustrating. The price is clearly cheap for this reason. I do a lot of large-scale development so I can handle debugging stuff like this, but it is frustrating when a vendor is selling junk like this and some kid will buy it and have no point of reference for why it is/isn't working.

I want to make a funny little device that says phrases and plays tunes etc. With this one piece, and an sd card, I can put all the clips on as mp3, and have the arduino fire them off in correct order!! Requires an amplifier, and speakers, but those are easy to come by also. Check these out! https://www.amazon.ca/gp/product/B00XAGSZSK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Great Deal - Work Perfect - Fast Shipping - Recommended ! Thanks