EcoBT Mini
EcoBT Mini is the code name for the 8×8 mm2 version of the EcoBT node. It is possibly the world’s smallest, self-contained motion-sensing node developed to date. It can be programmed to work as either a BLE master or slave. The small size makes it suitable for a wide variety of embedded and IoT (Internet of Things) applications.
Technical Specification
| EcoBT Mini | Eco Mini | |
|---|---|---|
| PCB size | 8x8mm2 | 9x12mm2 |
| MCU | TI CC2540 | TI CC2541 (SiP) |
| On-chip flash | 256 KB | 256 KB |
| On-chip RAM (Xdata) | 8 KB | 8 KB |
| Antenna | RFANT3216120A5T chip antenna | chip antenna |
| Accelerometer | ST LIS331DLH digital triaxial accelerometer | 9 DoF inertial sensor (acc, gyro, compass) |
| RTC | ST M41T62 (over emulated I2C) | RTC (over true I2C) |
| Magnetic Switch | Murata AS-M155SAH-R | magnetic switch |
| I/O expansion connector | PCB-edge connector | PCB edge connector, to be changed to Hirose |
| Battery | lithium coin (3V), lithium polymer (4.2V), or up to 5VDC (e.g., from USB) | lithium coin (3V), lithium polymer (4.2V), up to 5VDC |
| regulator | TLV70033 | step-down with bypass |
Development Resources
We recommend the following tools for development. For more information, see the development page.
Data Sheets
For EcoBT Mini
- TI CC2540 (BLE RF+MCU)
- ST LIS331DLH (digital triaxial accelerometer)
- ST M41T62 (RTC)
- TI TLV70033 (regulator)
- Murata AS-M15SAH-R (magnetic switch)
- RFANT3216120A5T (chip antenna)
For EcoMini
Pinout diagram
SDK
- TI BLE software stack (requires IAR Embedded Workbench and CC Debugger)
- EPL Compiler Binding Layer (requires SDCC, Python 2.7.x, BLE dongle)
BLE Client Tools
- BTools (TI, requires Windows and BLE dongle)
- LightBlue (iOS or Android, requires ≥ iPhone 4S or iPad 3, or Android 4.2 with hardware Bluetooth 4.0)