If you want to build a LoRa network or a smart sensor project, you often face two problems. First, the hardware is scattered and needs many cables. Second, you need a board that can talk to both the Raspberry Pi and LoRa modules without extra wiring. Those issues slow down development and can cause unreliable connections. The Rakwireless RAK6421, WisMesh Pi HAT + Raspberry Pi 4(2GB), Development Kit brings everything together in one compact package, so you can start testing and deploying right away.
Rakwireless RAK6421, WisMesh Pi HAT + Raspberry Pi 4(2GB), Development Kit with Rakwireless
Imagine a kit that lets you add LoRa, Bluetooth, Wi-Fi and sensor slots to a Raspberry Pi with a single click. This is exactly what the Rakwireless development kit does. It is a ready-to-use platform for creating Meshtastic nodes, LoRa gateways, or any IoT prototype. If you have ever struggled to match power levels, pin layouts, or driver software, this kit removes those headaches by providing a pre-tested HAT and a compatible Pi board.
Key Features
- Raspberry Pi 4 Model B with 2 GB RAM for smooth processing.
- RAK6421 WisMesh Pi HAT connects via the standard 40-pin header.
- Two WisBlock IO slots and four WisBlock sensor slots for modular expansion.
- Built-in I2C ADC for analog sensor input.
- Support for RAK13300 and RAK13302 LoRa modules.
- Onboard EEPROM enables automatic hardware identification.
- Dual-band 802.11ac Wi-Fi (2.4 GHz / 5 GHz) and Bluetooth 5.0 BLE.
- 1 Gigabit Ethernet port for reliable wired networking.
- Power supplied from the Pi 5 V rail with 3.3 V and VBAT outputs for modules.
- Micro-SD slot, USB 3.0/2.0 ports, and dual micro-HDMI for display options.
Specifications
| General |
|
| Product |
RAKwireless RAK6421 WisMesh Pi HAT + Raspberry Pi 4 (2GB) Development Kit |
| Platform |
Raspberry Pi 4 Model B (2GB RAM) |
| HAT Type |
WisMesh Pi HAT (RAK6421) |
| Intended Use |
Meshtastic node, LoRa gateway, IoT development platform |
| Processor |
|
| CPU |
Broadcom BCM2711, Quad-core Arm Cortex-A72 (64-bit) |
| Clock Speed |
1.5 GHz |
| Memory |
|
| System Memory |
2 GB LPDDR4 |
| Wireless Connectivity |
|
| Wi-Fi |
Dual-band 802.11ac Wi-Fi (2.4 GHz / 5 GHz) |
| Bluetooth |
Bluetooth 5.0, Bluetooth Low Energy (BLE) |
| Ethernet |
|
| LAN |
1 × Gigabit Ethernet |
| RAK6421 WisMesh Pi HAT |
|
| Raspberry Pi Interface |
Standard 40-pin Raspberry Pi HAT connector |
| WisBlock IO Slots |
2 × WisBlock IO slots |
| WisBlock Sensor Slots |
4 × WisBlock Sensor slots |
| Supported Modules |
LoRa radios, I2C sensors, GPS, I2S audio |
| Analog Input |
Built-in I2C ADC |
| Power |
Powered from Raspberry Pi 5V rail, provides 3.3V and VBAT to WisBlock modules |
| EEPROM |
Onboard HAT+ EEPROM for automatic hardware identification |
| Compatible LoRa Modules |
RAK13300, RAK13302 |
| Raspberry Pi I/O Ports |
|
| USB Ports |
2 × USB 3.0, 2 × USB 2.0 |
| Video Output |
2 × Micro HDMI (up to 4K) |
| Ethernet |
1 × Gigabit Ethernet (RJ-45) |
| Audio |
3.5 mm audio/composite jack |
| Camera Interface |
1 × MIPI CSI |
| Display Interface |
1 × MIPI DSI |
| GPIO |
40-pin GPIO header (used by the RAK6421 Pi HAT) |
| Storage |
microSD card slot |
| Power Input |
USB Type-C (5V) |
| Operating Conditions |
|
| Operating Temperature |
-40°C to +85°C (RAK6421 Pi HAT) |
| Input Voltage |
5V from Raspberry Pi |
