Quick Start
This guide introduces the FoBE Breakout L76K and how to use it.
Hardware diagram
The following figure illustrates the FoBE Breakout L76K hardware diagram.
Mechanical dimensions
FoBE Breakout L76K is a single-sided 25.4mm x 25.4mm (1" x 1") 1.6mm thick PCB with a SH1.0 6-pin connector and a set of 6-pin 2.54mm header holes. Fixing by 4 x 1.6mm Screw holes.
Interfaces
SH1.0 6Pin Connector and Reserved 6Pin Header Holes provide the following interfaces:
| Interface | Description |
|---|---|
| 3V3 | Power supply |
| GND | Ground |
| TX | UART data output |
| RX | UART command input |
| RST | Reset IC, Low-active |
| WAKE | Enable IC's Standby mode, Low-active |
Configuration Jumper
The board features two jumper pads:
| Interface | Description |
|---|---|
| CONSTELLATION | Soldering this pad configures the module to use GPS + GLONASS. By default, the pad is not soldered, and the module uses BeiDou + GPS. |
| LED-JUMPER | The PPS (Pulse Per Second) LED jumper. To save power, you can physically cut the trace between the pads of this jumper. You can later re-solder the jumper to reconnect the PPS LED. |
Other
- Build-in 3.1V Rechargeable Button Cell Battery for Data Retention.
- If using an active antenna, the "ACTIVE-ANT PWR" pad needs to be connected to 3V3.
- PPS-PULSE: Outputs a pulse per second, works concurrently with the PPS LED, but not affected by JP2.
Programming
FoBE Quill nRF52840 Mesh Example
It can be connected through the MFP port of the FoBE Quill nRF52840 Mesh development board.
#include <TinyGPSPlus.h>
#include <SoftwareSerial.h>
......
Make sure that the GPS module is used in a more open location so that it can get a good GPS signal.