The PCjs simulation above is limited to a maximum simulated clock speed of 4.77Mhz. When the simulation isunlimited (click the “Fast” button twice), it can reach simulated clock speeds over 80Mhz (tested on a 3.4Ghz Intel Core i7). However, speed is very dependent on the browser. Safari performs best, initially reaching 60Mhz, and then after a minute or so, jumping to 80Mhz. Firefox and IE9/IE10 are more consistent, with speeds just over 60Mhz.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.