The mbed xDOT shield features a Multitech xDOT LORA module, with mbed compatabile drag-drop programming. This device is both a independent platform or can act as a shield to make any device send or recieve LORA data via UART.
Whats included here?
- Eagle Schematic and Board files
- PDF Schematic and Board copies
- CAM Job GERBERS for manufacture (including pick/place and drill)
- BOM (Bill of Materials)
- eBOM (An online BOM for easy purchasing!)
The design features:
1. Multitech xDOT module: ST ARM® Cortex® M3 processor (STM32L151CCU6) 2. DAPLink Interface LPC11u35: Drag Drop programming 3. 868/915MHz LoRa chip antenna 4. AT45DB161E-SSHD-T Serial Flash 5. 3V JST-PH Battery connector 6. Arduino style headers: Allowing device to operate as LoRa shield 7. UART swap: Slide switch, allowing UART TX/RX to be swapped, if using as shield switch to 'On'
The hardware design files can be found in this repo as part of the mbed HDK and are referenced by their most up-to-date version v’x.x.x’.(If you wish to find an older project version, navigate to releases or checkout a previous commit).
Software and more info
The software for tests and more info can be found in the CI Test Shield github repository.
How to get hardware
- Buy pre-assembled board from vendor (todo)
- Do it yourself
- v 1.2.0 (23/06/17)
- 'D2' Replaced with 'R29' 0ohm.
- mbed enabled logo on silkscreen
- Modified 'CON2' now recommended voltage is 4.5V (from 3V) for VBAT, rerouted to input of LDO 'U2'
- v 1.1.0 (01/06/17)
- Placed resistors 'R14'-to-'R27' on front of PCB (no components on rear)
- Rerouted UART1TX, UART1RX (improved antenna performance)
- Moved USB micro further into board
- v 1.0.0 (18/05/17)
- Initial Commit