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Tiny Relay

Official Active

Minimal STM32WLE5CC relay target for MeshCore builds, intended for tiny always-on nodes and experimentation with a low-cost LoRa-enabled MCU.

~$5 approx.· 2026-06

Product page ↗

MCU: ST STM32WL
Radio: ST STM32WL (integrated LoRa)
Display: None
GPS: None
Battery: None
Connectivity: USB

Transports

usb

Hardware

Radio

Technology: LORA
Chip: ST STM32WL (integrated LoRa) ↗

Processor

Family: ST STM32WL ↗
Architecture: ARM Cortex-M4
Flash: 0.25 MB
RAM: 64 KB

Battery

Battery: None
Built-in: No
Charging: No

Power

Power draw (idle): 4.82 mA
Power draw (TX): 87 mA

Connectivity

USB modes: Power, Serial, Flashing
Wi-Fi: None

Details

Kind: Product
Lifecycle: Active
Family: yaoyao-tiny-relay
Firmware support: 2
Catalog completeness: 58 %

Firmware support

Firmware	Type	Target	Status	Notes
MeshCore (Official)	Official	tiny_relay	✓ Supported
MeshCoreNG	Fork	tiny_relay	✓ Supported