the u-blox NEO-6M global positioning system (GPS) module, a very popular, cost-effective, high-performance GPS module with a ceramic patch antenna, an on-board memory chip, and a backup battery that can be conveniently integrated with a broad range of microcontrollers. Nowadays, two NEO-6M GPS modules are extremely popular — the GY-GPS6MV2 and the GY-GPSV3-NEO.
u-blox NEO-6M GPS module
The u-Blox NEO-6M GPS engine on these modules is quite a good one, and it also has a high sensitivity for indoor applications. Furthermore, there’s one MS621FE-compatible rechargeable battery for backup and EEPROM for storing configuration settings. The module works well with a DC input in the 3.3- to a 5-V range (thanks to its built-in voltage regulator). The original circuit diagram of the module, borrowed from the web, is shown below:
| NEO-6M GPS Module | USB-to-Serial Converter |
| TX | RX |
| RX | TX |
| GND | GND |
| VCC | 5 V |
