Valleytech Announces Tanmatsu LoRa Radio Deck with ESP32-P4

Valleytech Custom Solutions announced the Tanmatsu LoRa Radio Deck on May 1, 2026. The company positions the device as an open hardware handheld designed for off-grid communication. It supports the Meshtastic protocol to enable mesh networking without cellular coverage. The announcement highlights the device as a tool for users who require reliable connectivity in remote areas.

The core of the Tanmatsu LoRa Radio Deck is the ESP32-P4 system-on-chip. This processor features two RISC-V cores running at 400 MHz. The system includes 32 MB of PSRAM and 16 MB of flash storage for data retention. A secondary ESP32-C6 co-processor manages WiFi 6 and Bluetooth 5 connections. The device also features a 7-inch MIPI DSI display with an 800 x 480 resolution.

Open hardware handheld supports Meshtastic mesh networking

Users can interact with the device through a full QWERTY keyboard equipped with tactile dome switches. The hardware supports LoRa connectivity via a modular radio that operates on 433 MHz and 868 MHz bands. Expansion options include SAO and PMOD ports alongside a dedicated microSD card slot. These features allow developers to attach additional sensors or storage modules to the handheld.

Specifications

• SoC: ESP32-P4
• CPU: Two RISC-V cores at 400 MHz
• Memory: 32 MB PSRAM, 16 MB flash
• Co-processor: ESP32-C6
• Display: 7-inch MIPI DSI, 800 x 480

Valleytech intends to release the first production batch in early Q2 2026. The company plans to make the unit available globally to early adopters and developers. While final pricing is still unconfirmed, the device is available under the CERN Open Hardware License. This license permits users to build their own units using the open schematics provided by the vendor.