wasm3/docs/Hardware.md

Wasm3 hardware support

Recommended devices (ideal for beginners)

• ESP32-based
  • LilyGO TTGO T7 V1.4 │ AliExpress
  • M5Stack Fire │ AliExpress
• nRF52840-based
  • Adafruit CLUE │ Adafruit
  • Arduino Nano 33 BLE (or BLE Sense) │ Arduino
  • Particle Argon │ Particle
  • Adafruit Feather nRF52840 | Adafruit
• Other
  • Raspberry Pi Pico | Raspberry Pi
  • Adafruit PyGamer/PyBadge/PyBadge LC │ Adafruit
  • SparkFun Artemis | SparkFun
  • Teensy 4.0 │ PJRC
  • Wemos W600 PICO │ AliExpress

Compatibility table

Device	Chipset	Architecture	Clock	Flash	RAM
Espressif ESP32		Xtensa LX6 ⚠️	240MHz	4 MB	520KB
Particle Argon, Boron, Xenon	nRF52840	Cortex-M4F	64MHz	1 MB	256KB
Particle Photon, Electron	STM32F205	Cortex-M3	120Mhz	1 MB	128KB
Sparkfun Photon RedBoard	STM32F205	Cortex-M3	120Mhz	1 MB	128KB
Air602	WM W600	Cortex-M3	80MHz	1 MB	160KB+128KB
Adafruit PyBadge	ATSAMD51J19	Cortex-M4F	120MHz	512KB	192KB
Realtek RTL8711		Cortex-M3	166MHz	2 MB	2 MB+512KB
Nordic nRF52840		Cortex-M4F	64MHz	1 MB	256KB
Nordic nRF52833		Cortex-M4F	64MHz	512KB	128KB
P-Nucleo WB55RG	STM32WB55RG	Cortex-M4F	64MHz	1 MB	256KB
Teensy 4.0	NXP iMXRT1062	Cortex-M7	600MHz	2 MB	1 MB
Teensy 3.5	MK64FX512	Cortex-M4F	120MHz	512KB	192KB
MXChip AZ3166	EMW3166	Cortex-M4	100MHz	1 MB+2 MB	256KB
Arduino Due	AT91SAM3X8E	Cortex-M3	84MHz	512KB	96KB
Sipeed MAIX	Kendryte K210	RV64IMAFDC	400MHz	16 MB	8 MB
Fomu (soft CPU)	Lattice ICE40UP5K	RV32I	12MHz	2 MB	128KB

Limited support

The following devices can run Wasm3, however they cannot afford to allocate even a single Linear Memory page (64KB). This means memoryLimit should be set to the actual amount of RAM available, and that in turn usually breaks the allocator of the hosted Wasm application (which still assumes the page is 64KB and performs OOB access).

Device	Chipset	Architecture	Clock	Flash	RAM
Espressif ESP8266		Xtensa L106 ⚠️	160MHz	4 MB	~50KB (available)
Teensy 3.1/3.2	NXP MK20DX256	Cortex-M4	72MHz	288KB	64KB
Blue Pill	STM32F103	Cortex-M3	72MHz	64KB	20KB
Arduino MKR*	SAMD21	Cortex-M0+ ⚠️	48MHz	256KB	32KB
Arduino 101	Intel Curie	ARC32	32MHz	196KB	24KB
SiFive HiFive1	Freedom E310	RV32IMAC	320MHz	16 MB	16KB
Nordic nRF52832		Cortex-M4F	64MHz	256/512KB	32/64KB
Nordic nRF51822		Cortex-M0 ⚠️	16MHz	128/256KB	16/32KB
Wicked Device WildFire	ATmega1284	8-bit AVR ⚠️	20MHz	128KB	16KB

Legend:

⚠️ This architecture/compiler currently fails to perform TCO (Tail Call Optimization/Elimination), which leads to sub-optimal interpreter behaviour (intense native stack usage, lower performance).
There are plans to improve this in future 🦄.