In this Instructable i will show you how to build a Clock out of an ESP8266 Node-MCU v0.9 dev. kit, a 24 Neopixel Ring and some other parts. Sorry for my bad english skills, if there is a problem or a question ask me and i will try to help you.
Step 1: Parts and Tools
- ESP8266 Node-MCU v0.9 dev. kit (around 6 Euros)
- Adafruit Neopixel Ring 24 Pixels (around 10 Euro)
- enamelled copper wire 0,5 mm (around 3 Euro)
- copper wire 1mm (1,5 Euro)
- 2K Glue ( 1 Euro)
- a piece of metal perhaps you have a piece laying at home
- an old smartphone charger ( 3,99 Euro or cheaper if you have one at home)
- a piece of dotted perfboard (big enough to fit the ESP8266)
- Female Pin Header (1,35 Euro)
The parts from above are from ebay but i think you get some or all of these also from your local stores.
- soldering Iron
- pliers (bend the piece of metal and the 1mm copper wire)
- saw (cut out the perfboard)
Step 2: Perfboard
In this step we cut the female header and the perfboard in the right dimensions. Lay the ESP8266 on the perfboard and mark the pins on the board (picture 1). On the right side let a row space for the female header. (seen in picture 3). Cut of the long female header 2 three pin parts(picture 2). Place the three pin header parts on the perfboard where your pins D5, GND and 3,3V of the ESP8266 is. Cut also 2 single female pins for the left side (picture 4). These two single female pins are only for stability. The last picture shows the connection between ESP8266 and Neopixel Ring.
Step 3: Soldering
This is a short step. Turn your perfboard around and solder the female header. That's it, the circuit is done.
Step 4: Program ESP8266
I work with the Arduino IDE 1.6.7. It's easy and simple to use it. Setting up the IDE for the ESP8266 is easy and there are many instructables here, so i do not want to bore you with this step. If you start programming the ESP8266 it should look like in the first picture. These are the setting i use for the ESP8266 Node-MCU 0.9.
In the appendix you find everything you need for the project (Libraries and sketch).
The code is well explained. You only have to put in your SSID (name) of your wifi network (Codeline 18) and the password (Codeline 19), instead of the stars. If you are not from Central Europe you can also change the timezone.
Now compile and load it to your ESP8266.
Step 5: Metal Work
This is the creative part of the instructable. Take the piece of metal or material of you choice and form it. I made 4 holes in the piece. One to hang it on the wall, two for the copper wire (1mm) to hold the Neopixel Ring and a little hole to put three enamelled copper wires through for connecting the ESP8266 and Neopixel Ring. On the second picture you can see the rear side. There are also two "hooks" for the perfboard also made of the 1mm copper wire. To glue the copper wire on the metal i took a 2k component glue andmade spirals for more stability.
Step 6: Put Everything Together
You are nearly done. In the last step you put everything together. The picture shows the rear side with mounted perfboard and the three enamelled copper wire which go through the metal. The second picture shows the front side.
If you like my instructable leave a comment and/or like it. Do you have questions? Place it in the comments i will try to help you. At the end if you really like it please vote for me in the Full Spectrum Laser contest.