{"id":30891184,"url":"https://github.com/zachzion762/teensy41-intercom","last_synced_at":"2026-04-29T22:36:56.708Z","repository":{"id":311664039,"uuid":"1044508684","full_name":"zachzion762/teensy41-intercom","owner":"zachzion762","description":"Teensy 4.1–based intercom system with MQTT + Home Assistant integration. 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Pins used are:\n\n\\\\\\\nBTN1..BTN12 → 1, 3, 5, 7, 9, 10, 12, 24, 26, 28, 30, 32\n\\\\\\\n\nAll pins use \\INPUT_PULLUP\\, so pressing pulls the pin LOW.  \n**Other side of every button = GND (shared).**\n\n---\n\n## 📸 Hardware Photos\n\n| Printing Brackets | Empty Enclosure | Wiring | Final Mount |\n|-------------------|-----------------|--------|-------------|\n| ![Brackets](hardware/photos/3d_print_brackets1.jpg) | ![Empty1](hardware/photos/empty1.jpg) | ![Wiring1](hardware/photos/wiring1.jpg) | ![WoodBlock](hardware/photos/3d_print_brackets5.jpg) |\n\n\u003e More photos in [hardware/photos](hardware/photos).  \n\u003e If your exact filenames differ, update the links above (they were sanitized to remove spaces/parentheses).\n\n---\n\n## 🎥 3D Print Timelapse\n[▶ 3D print timelapse video](hardware/photos/3D_print_timelapse.mp4)\n\n---\n\n## 🛠️ 3D Printed Parts\n- [\\Teensy_4.1_Ethernet_Mount.stl\\](hardware/Teensy_4.1_Ethernet_Mount.stl)  \n  Bracket to hold the Teensy with the PJRC Ethernet kit.\n\n---\n\n## 📡 MQTT\nSee [docs/mqtt-topics.md](docs/mqtt-topics.md).\n\n---\n\n## 🏠 Home Assistant Integration\n\nEntities appear automatically under **MQTT → Binary Sensors** (discovery).  \n\n![HA Discovery](docs/screenshots/ha_discovery.png)  \n![HA Entities](docs/screenshots/ha_entities.png)\n\n---\n\n## ⚙️ Build Instructions (Arduino IDE 2.3.6)\n\n1. **Boards Manager**: install “Teensy by PJRC” → select **Teensy 4.1**  \n2. **Library Manager**: install  \n   - **QNEthernet** (Shawn Silverman)  \n   - **PubSubClient** (Nick O’Leary)  \n3. Copy \\f\firmware/TeensyIntercom/secrets_example.h\\ → \\secrets.h\\ and edit with your broker details.  \n   (\\secrets.h\\ is ignored by Git — safe to commit the project without it.)  \n4. Open \\f\firmware/TeensyIntercom/TeensyIntercom.ino\\  \n5. **Verify** → **Upload**\n\nAfter upload, check MQTT:\n\\\\\\\nintercom/availability = online\nintercom/button/N = ON/OFF\n\\\\\\\n\n---\n\n## 📜 License\nMIT — see [LICENSE](LICENSE).\n\n---\n\n## 🙏 Credits\n- **QNEthernet** by Shawn Silverman  \n- **PubSubClient** by Nick O’Leary  \n- Built with Arduino IDE 2.3.6\n\n## Bill of Materials\nSee [hardware/BOM.md](hardware/BOM.md) for the full parts list.\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fzachzion762%2Fteensy41-intercom","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fzachzion762%2Fteensy41-intercom","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fzachzion762%2Fteensy41-intercom/lists"}