I just received two off these small ESP-01 boards.
They are part off the ESP8266 family and have relly nice specs:
- ESP8266 chip.
- 2 dedicated GPIOs.
- Serial comms (or 2 additional GPIOs).
- Pin connectors.
- PWM, I2C, UART, OneWire.
- On-board WiFi + printed antenna, 802.11 b/g/n, 360m range.
- Able to become a wireless access point.
- Lua and Arduino firmware available.
- Able to run a web server.
- Dimensions: 24.75 x 14.5mm.
- Power: 3.3v. (important!!)
Instruction for flashing this little fellow can be found on http://www.esp8266basic.com/flashing-instructions.html
And I plan on building this flaching setup
Got my self a 24Bit LED ring!
Nice toy with 24 pcs. of ws2812b three wire LED.
I hooked it up to my Arduino UNO and loaded it with the default sketch “NeoPixel FUN” that comes with the NeoPixelBus.h library.
Below you can see some videos i made of the result.
at first I used external 5V supply to measure the load current.
afterwards I powered it from laptop usb supply.
Adafuit has a great guide if you would like to play with NeoPixels yourself.
I have attached a LED ws2812b to my NodeMCU which has the ESP8266 onboard and programmed it with the arduino IDE to connect to Cheerlights.
It will now connect to my home wifi network and change color every time a twitter message including #cheerlights and one of the supported colors is send.