{"id":26285391,"url":"https://github.com/eftekin/cryptotracker-esp32","last_synced_at":"2026-04-29T10:08:51.608Z","repository":{"id":282265154,"uuid":"948009338","full_name":"eftekin/CryptoTracker-ESP32","owner":"eftekin","description":"💰 Real-time cryptocurrency price tracker for ESP32 with dynamic coin list via JSON.","archived":false,"fork":false,"pushed_at":"2025-03-31T20:54:59.000Z","size":11,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-03-31T21:40:39.927Z","etag":null,"topics":["cryptocurrency","esp32","i2c-display","livecoinwatch-api"],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/eftekin.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2025-03-13T15:44:33.000Z","updated_at":"2025-03-31T20:55:02.000Z","dependencies_parsed_at":"2025-03-13T17:33:53.515Z","dependency_job_id":"02bd1baf-8930-4a6c-b088-c8e401051394","html_url":"https://github.com/eftekin/CryptoTracker-ESP32","commit_stats":null,"previous_names":["eftekin/cryptotracker-esp32"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/eftekin/CryptoTracker-ESP32","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eftekin%2FCryptoTracker-ESP32","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eftekin%2FCryptoTracker-ESP32/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eftekin%2FCryptoTracker-ESP32/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eftekin%2FCryptoTracker-ESP32/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/eftekin","download_url":"https://codeload.github.com/eftekin/CryptoTracker-ESP32/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eftekin%2FCryptoTracker-ESP32/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":261070524,"owners_count":23105421,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["cryptocurrency","esp32","i2c-display","livecoinwatch-api"],"created_at":"2025-03-14T19:24:07.945Z","updated_at":"2026-04-29T10:08:50.149Z","avatar_url":"https://github.com/eftekin.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# CryptoTracker ESP32\n\nCryptoTracker ESP32 is a real-time cryptocurrency price tracker built on an ESP32 microcontroller. It fetches live cryptocurrency prices from the LiveCoinWatch API and displays them on a 16x2 I2C LCD screen.\n\n## Features\n\n- Fetches live cryptocurrency prices from [LiveCoinWatch API](https://www.livecoinwatch.com/tools/api)\n- Dynamically loads supported coins from a remote JSON configuration file\n- Displays coin names and current prices on a 16x2 I2C LCD screen\n- Automatically rotates through different cryptocurrencies at configurable intervals\n- Uses `secrets.h` to securely store API keys and Wi-Fi credentials\n- Provides error handling for network and API issues\n\n## Hardware Requirements\n\n- ESP32 development board\n- 16x2 I2C LCD screen (0x27 address)\n- Jumper wires for connections\n- USB cable for programming and power\n\n## Wiring Diagram\n\nConnect the I2C LCD to the ESP32 using the following pins:\n- SDA: GPIO 32\n- SCL: GPIO 33\n- VCC: 5V (VIN)\n- GND: GND\n\n## Libraries Used\n\n- `LiquidCrystal_I2C`: For controlling the LCD display\n- `Wire`: For I2C communication\n- `WiFi`: For connecting to the internet\n- `HTTPClient`: For making API requests\n- `ArduinoJson`: For parsing JSON data\n- Standard C++ `map` and `vector` for data management\n\n## Setup Instructions\n\n1. Clone this repository:\n   ```bash\n   git clone https://github.com/eftekin/CryptoTracker-ESP32.git\n   ```\n\n2. Install the required libraries via Arduino Library Manager.\n\n3. Create a `secrets.h` file in the project directory with the following contents:\n   ```cpp\n   #define WIFI_SSID \"YourWiFiName\"\n   #define WIFI_PASSWORD \"YourWiFiPassword\"\n   #define API_KEY \"YourLiveCoinWatchAPIKey\"\n   ```\n\n4. Obtain an API key from [LiveCoinWatch](https://www.livecoinwatch.com/tools/api).\n\n5. Connect your ESP32 board to your computer and select the appropriate board and port in Arduino IDE.\n\n6. Upload the code to your ESP32.\n\n## Configuration\n\nThe device fetches a list of cryptocurrency codes from a remote JSON file. The default location is:\n```\nhttps://raw.githubusercontent.com/eftekin/CryptoTracker-ESP32/refs/heads/main/coins.json\n```\n\nThe JSON file should contain an array of cryptocurrency codes:\n```json\n[\n    \"BTC\",\n    \"ETH\",\n    \"BNB\",\n    \"DOGE\",\n    \"SOL\"\n]\n```\n\n## Customization\n\n- `FETCH_INTERVAL`: Time in milliseconds between API calls (default: 9000ms)\n- `SWITCH_INTERVAL`: Time in milliseconds between cycling to the next coin (default: 5000ms)\n- `SDA_PIN` and `SCL_PIN`: GPIO pins for I2C communication (defaults: 32 and 33)\n\n## Troubleshooting\n\n- If the LCD shows \"WiFi Error!\", check your WiFi credentials and connection.\n- If the LCD shows \"API Error!\", verify your API key and internet connection.\n- If the LCD shows \"JSON error!\" or \"Parse Error!\", there may be an issue with the JSON data format.\n- If the LCD shows \"No coins found!\", check that your coins.json file is accessible and properly formatted.\n\n## License\n\nThis project is licensed under the MIT License.\n\n## Acknowledgements\n\n- [LiveCoinWatch API](https://www.livecoinwatch.com/tools/api) for cryptocurrency price data\n- Contributors and maintainers of the libraries used in this project\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feftekin%2Fcryptotracker-esp32","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Feftekin%2Fcryptotracker-esp32","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feftekin%2Fcryptotracker-esp32/lists"}