I bought a few of these board a while a go and today I have a project in which I want to use one.

Soldered the headers and ready to rumble .. but it seems impossible to program this little board!

I have tried everything like swapping the DTR and CTS pins of the FTDI board with which I program al kind of boards al the time.
So now I have tried every iteration of DTR/CTS to GP00/RST
Made GP02 high, GP15 low, EN high
Bench 3v3 power supply
Several FTDI boards
noting ..

Asked for the schematic but have not yet received a reply

Bryan | Jan. 3, 2018

Schematics would help!

For Si7021 Digital Humidity Sensor Module

I received the devices but have not been able to test them SINCE no schematics are provided! I have requested them twice but still no response from the maker. The device appears as it does in the picture and the shipping was on time. But, I still don't know if they work or not. Hopefully after the maker sends me the schematics I'll add to my review.

Seth | Feb. 5, 2017

Good

For ESP8266 ESP-01 Programming and Development Board

Once i figured it out, it works well. If flashing with arduino IDE, hold down the button until the flash is complete, then power cycle.

If flashing does not work, hold down the flash button while applying power, and then flash.

I wish there was documentation about what all of the pins are... i don't know what the VR pin is (unregulated voltage in maybe?). I sent a message to the manufacturer, but no response. If anyone knows what it is, please let me know!

Dan | Jan. 19, 2016

Nice little board.

For ESP8266 ESP-01 Programming and Development Board

I am using it with Arduino IDE. Works great so far.

Since it comes without any info I had to search again the internet to find out how to connect to the board.
After that, it did not worked because I had a 3V3 FDTI adapter and so there was not enough voltage to work.
Luckily the adapter allows to cut and solder a bridge to output 5V.
Unluckily I managed to cut beyond the bridge into the 5V line and so there was no power at all.
After this was fixed it worked great.
Because I am using the Arduino IDE, it is a bit annoying to flash as I have to hold the DL button until it starts to flash.

Over all I am happy with this product and I could only recommend it.

David | Sept. 4, 2015

The product works, BUT...

For Capacitive Touch Power Switch

This is an exciting product, and I would like to use it more. But the projects I have in mind for it require an understanding of how it works. This is not possible given the lack of documentation. How hard is it to provide a schematic of a board that has 8 parts on it?

Tindie

blkbox

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BB-ESP12BK looks very good but ... help

Schematics would help!

Good

Nice little board.

The product works, BUT...