Wasmino is an Arduino core fully compatible with the Arduino IDE. It allows you to compile your Arduino sketch to WebAssembly and run it in a browser, all using the Arduino IDE.
The Wasmino should be viewed as having an infinitely fast CPU, and operations other than
delayMicrosecondsdo not take any CPU time. Calling time functions
millisshould reflect this. IO can only happen during sleep, therefore you cannot do
while (!digitalRead(2)) // this will hang the browser tab
and should do this instead
Having a infinitely fast CPU also means that interrupts will only happen during
delayMicroseconds. It is still good practice to use
interruptsto protect critical sections if you plan to use your code on real hardware.
Other caveats exist such as the lack of
BUILTIN_LEDmacro since Wasmino, being virtual, doesn’t have a built-in LED.
The Wasmino Arduino core is available at https://github.com/wasmino/wasmino-core.
The runtime is also available at https://github.com/wasmino/wasmino-runtime.
More on Yifan Gu’s Blog
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
No comments yet.
Adafruit has a “be excellent to each other” comment policy. Help us keep the community here positive and helpful. Stick to the topic, be respectful of makers of all ages and skill levels. Be kind, and don’t spam – Thank you!