The code has been updated to work with free Coingecko API. Besides that, a few UI tweeks on the display make it even more pleasant to watch.
All of the setup is similar to the previous version, so most of the instructions / video tutorials still apply. The main difference is that you now put your cryptos in the cryptos.h file. And the best for last... you can now add the logo to every displayed cryptocurrency! To do that you will need a bitmap of a 32x32 image that you put alongside coin id in cryptos.h file.
I ported this project to a coloful LCD screen, updated the UI and added more features. If you like this project, you will certainly love this one as well.
Have a look at my bitcoin-watch project!
There are several ways to convert a regular image into a bitmap, that you can use in this project. The general recipe for creating a logo that displays nicely I use is:
- Download coin image
- Open it in GIMP
- Scale it to 32x32
- Change mode to indexed (it will make the picture black and white, everything that is black will be displayed on the screen)
- Save it as .xbm file
- Open .xbm file in text editor and copy the bit-array to your cryptos.h
Check out the youtube video of the project!
A display built with an ESP8266 that fetches live currency prices directly from the CoinMarketCap.com API.
I've tried to make this project as easy to make as possible. There is no soldering and you also do not need to know how to code. In total it should take 10-15 minutes. The total cost is also only about $8 or so.
Crypto Wallets (If you feel like tipping, obviously no need to!)
- ETH: 0x8b4334dc87d2231745772DBaDdC5FE8E705613BE
- BTC: 14pzPrjedUyYb4iqxNA8xCPVKPcDKgeV1x
It should be wired as followed
| Pin On Display | Pin on NodeMCU |
|---|---|
| GND | G |
| VCC | 3V (some boards say 3.3V |
| SCL (Sometimes SCK) | D5 |
| SDA | D3 |
NOTE: Some displays have GND and VCC swapped around, always wire as above!
