This is a versatile Bitcoin blockclock for the M5StickC Plus (ESP32) that connects to Wi-Fi and fetches data from mempool.space every minute. The updated version now supports multiple screens, displaying additional information such as price, transaction fees, date and time, and more. This version requires the ESP32-Bitcoin-BlockClock-Library, which can be found on GitHub.
- Download the latest version of Arduino IDE
- Follow this tutorial to install the required libraries, which include M5StickC Plus, ArduinoJson, and ESP32-Bitcoin-BlockClock-Library
- Clone the repository and open the blockclock.ino file with the Arduino IDE
- Make sure to edit the
userBoardDefines.hfile in the ESP32-Bitcoin-BlockClock-Library to define your device type. For example:
#define GENERIC_ESP32 1
/* #define M5STACK 1 */
#ifdef GENERIC_ESP32
#define BUTTON1PIN 35
#define BUTTON2PIN 0
#endif
- Select the COM port corresponding to your M5Stick and the model
- Compile and upload the code using these commands:
# Command to compile
arduino-cli compile --fqbn m5stack:esp32:m5stick-c-plus:PartitionScheme=default,CPUFreq=240,UploadSpeed=1500000,DebugLevel=none,EraseFlash=none --build-path build --port COM5 blockclock/blockclock.ino
# Command to upload
arduino-cli upload --fqbn m5stack:esp32:m5stick-c-plus:PartitionScheme=default,CPUFreq=240,UploadSpeed=1500000,DebugLevel=none,EraseFlash=none --programmer esptool --input-dir build --port COM5
| # | Screen | Function |
|---|---|---|
| 1 | BlockHeight | Show current blockheight |
| 2 | TransactionFees | Show recommended fees in Sats/Byte |
| 3 | DateTime | Show current date and time |
| 4 | Price | Show current price of BTC |
| 5 | Change | Show BTC change in 1h, 24h, 7d, 30d |
| 6 | WiFiData | Show information about Wi-Fi |
- Uses the M5StickC's real-time clock to manage time and control on-screen information updates
- Fetches current time and date from NTP server and sets this information in the real-time clock
- Stores Bitcoin price and price changes in persistent storage, valid for 5 minutes, reducing API fetches
- Supports multiple currencies for price display, including BRL and USD
- Improved battery percentage display
- Stores Wi-Fi credentials (SSID and password) persistently after successful smartconfig
The code uses smartconfig from ESP32 to connect to Wi-Fi, so you need the app [ESP-TOUCH](https://www.espressif.com/en/products/software
/esp-touch/resources), which can be found on the EspressIF website.
