EcoBT Super
EcoBT Super is the code name for the 4×2 cm2 version of the EcoBT node, designed for many wireless sensing and IoT (Internet of Things) applications. It is a self-contained motion-sensing node that can work also a BLE master, slave, or a BLE USB dongle. It has the same triaxial accelerometer and RTC as EcoBT Mini, but with more prototyping area, on-board serial flash, and a MicroSD card slot. It can serve as a more convenient prototyping board when developing firmware for the EcoBT Mini, and it can also serve as the dongle (CC2540 version).
Recently, we start making the CC2541 version of the board. The power consumption is lower, and it has hardware I2C, making it more efficient to access the RTC, but it has no USB; its USB connector is for power only.
Technical Specification
| PCB size | 4×2 cm2 |
|---|---|
| MCU | TI CC2540 or CC2541 |
| On-chip flash | 256 KB |
| On-chip RAM (Xdata) | 8KB |
| Antenna | Antenova A5839 Chip antenna |
| Accelerometer | ST LIS331DLH digital triaxial accelerometer |
| RTC | ST M41T62 (over emulated I2C) |
| Magnetic Switch | Murata AS-M155SAH-R |
| I/O expansion connector | Molex SlimStack board-to-board connector; MicroSD card slot |
| Battery | lithium coin (3V), lithium polymer (4.2V), or up to 5VDC (e.g., from USB) |
| regulator | TLV70033 |
| on-board serial (SPI) flash | AT25DF (16 Mb = 2 MB) |
Development Resources
We recommend the following tools for development. For more information, see the development page.
Data Sheets
- 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)
Pinout diagram
| 1. MSCLK | 2. VCC5 |
| 3. MMOSI | 4. VCC_B |
| 5. MMISO | 6. VCC3V3 |
| 7. CS0 | 8. TxD |
| 9. SMISO | 10. RxD |
| 11. SMOSI | 12. AIN0 |
| 13. SSCLK | 14. AIN1 |
| 15. PWM0 | 16. W2SCL |
| 17. INT | 18. W2SDA |
| 19. PROG | 20. GND |
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)