DatasheetsModules
Expand: LoRa / GPS 1.0
Expand: LoRa / GPS 1.0 datasheet — LoRa radio, GPS receiver, antennas, on-module EEPROM, and connectors.
Datasheet for Expand: LoRa / GPS 1.0, an Attaky radio + location module. For the user guide, see the LoRa / GPS manual. System-wide pin maps and the global I²C address table are on Frame & Connections.
Features
- Ra-01SH LoRa radio module (Semtech SX1262 inside), SPI to the host, sub-GHz
- ATGM336H-5N31 GNSS module (AllyStar AT6558 inside), GPS + BeiDou, NMEA over UART
- LoRa/RF antenna connection
- On-module EEPROM that caches GNSS assist data to shorten cold-start time to first fix
- 915 MHz (North America) shipping; 868 MHz (EU / India) and 433 MHz (EU / China) coming soon
Components
| Part | Role | Interface |
|---|---|---|
| Ra-01SH (SX1262) | LoRa sub-GHz radio | SPI |
| ATGM336H-5N31 (AT6558) | GPS + BeiDou GNSS receiver | UART @ 9600 bps |
| AT24C32M/TR | 32 Kbit EEPROM — GNSS assist-data cache | I²C, on GPS module (not on host bus) |
Specifications
| Item | Value |
|---|---|
| LoRa module | Ra-01SH (Semtech SX1262) |
| LoRa interface | SPI |
| LoRa frequency | 915.0 MHz (North America); 868 / 433 MHz coming soon |
| GNSS module | ATGM336H-5N31 (AllyStar AT6558) |
| GNSS systems | GPS + BeiDou (BDS) |
| GNSS interface | UART @ 9600 bps |
| GNSS protocol | NMEA-0183 (GPRMC / GPGGA / GNRMC) |
| Antenna | LoRa/RF (connect before transmitting) |
| Assist cache | AT24C32M/TR EEPROM, wired to the GNSS module |
Radio (LoRa)
- Module: Ra-01SH, packaging a Semtech SX1262 sub-GHz transceiver, connected to the host over SPI.
- Frequency: 915.0 MHz for the North America units shipping now; 868 MHz (EU / India) and 433 MHz (EU / China) variants are planned. Each radio is tuned for one band.
- Antenna: dedicated LoRa/RF antenna connection. Never run the radio without its antenna attached — transmitting with no antenna can damage it.
- Signals: SPI (SCK, MOSI, MISO, NSS) plus RESET, BUSY, and DIO1 — see the connector map under Connectors & power.
GPS (GNSS)
- Module: ATGM336H-5N31, packaging an AllyStar AT6558 receiver, supporting GPS + BeiDou.
- Interface: UART at 9600 bps. The module streams NMEA-0183 sentences (GPRMC / GPGGA / GNRMC) to the host; the host can send configuration commands back over the same link.
- Assist cache: an AT24C32M/TR EEPROM is wired directly to the GNSS module and managed by it, used to cache ephemeris / assist data and shorten time to first fix after a cold start. This EEPROM is not exposed on the host I²C bus and is not addressed by host firmware.
- Signals: TXD (NMEA out) and RXD (command in) — see the connector map under Connectors & power.
Connectors & power
LoRa / GPS attaches to a Core at the back of the build through the board-to-board (BTB) connector — it has no top, side, or bottom expansion IO.
Each chip pin lands on a BTB position:
| Chip | Pin | Connector |
|---|---|---|
| Ra-01SH (SX1262) | SCK | M-BTB26 |
| Ra-01SH (SX1262) | MOSI | M-BTB27 |
| Ra-01SH (SX1262) | MISO | M-BTB28 |
| Ra-01SH (SX1262) | NSS | M-BTB33 |
| Ra-01SH (SX1262) | RESET | M-BTB38 |
| Ra-01SH (SX1262) | BUSY | M-BTB30 |
| Ra-01SH (SX1262) | DIO1 | M-BTB39 |
| ATGM336H (AT6558) | TXD | M-BTB31 |
| ATGM336H (AT6558) | RXD | M-BTB32 |
For the complete connector pin map (every BTB position) and the system-wide I²C table, see Frame & Connections.
Mechanical
| Item | Value |
|---|---|
| Module body | 66 × 46 mm |
| Thickness | 17.6 mm (at the antenna base) |
| Height with antenna up | 200 mm |
Operating conditions
| Item | Value |
|---|---|
| Operating temperature | 0–40 °C (32–104 °F) |
| Water resistance | None — not waterproof, no IP rating |
Keep it dry, out of direct sunlight, and away from prolonged heat — do not leave it in a parked car.