Adafruit Trinket M0 - for use with CircuitPython & Arduino IDE

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Then the code gets the corresponding keys pressed from our array. If you grounded and ungrounded A1, the code retrieves the keypress a, if you grounded and ungrounded A2, the code retrieves the string, "Hello world!" bossac -p=/dev/cu.usbmodem14301 -e -w -v -R adafruit-circuitpython-feather_m0_express-3.0.0.bin Using bossac Versions 1.9 or Later bossac -p=/dev/cu.usbmodem14301 -e -w -v -R --offset=0x4000 adafruit-circuitpython-feather_m4_express-3.0.0.bin Be aware, if you have used Arduino to program your board, CircuitPython is no longer able to provide the USB services. You will need to reload CircuitPython to resolve this situation. A - You need to short out pin 10 on the right joycon rail to GND with a jig or modded joycon or paperclip (not recommended... Buy a jig you cheap-ass gyppo). Once shorted out, hold down vol+ and power. The switch screen should be off... Plug into your PC and it should recognise a APX device. Well done. You are in RCM.

The boot.py file is special - the code within it is executed when CircuitPython starts up, either from a hard reset or powering up the board. It is not run on soft reset, for example, if you reload the board from the serial console or the REPL. This is in contrast to the code within code.py, which is executed after CircuitPython is already running. PA26 Pin = 26 PA27 Pin = 27 PA28 Pin = 28 PA29 Pin = 29 PA30 Pin = 30 // peripherals: TCC1 channel 0 PB00 Pin = 32 PB01 Pin = 33 PB02 Pin = 34 PB03 Pin = 35 PB04 Pin = 36 PB05 Pin = 37 PB06 Pin = 38 PB07 Pin = 39 PB08 Pin = 40 PB09 Pin = 41 PB10 Pin = 42 // peripherals: TCC0 channel 0You'll need to solder up your NeoPixels first. Verify your connection is on the DATA INPUT or DIN side. Plugging into the DATA OUT or DOUT side is a common mistake! The connections are labeled and some formats have arrows to indicate the direction the data must flow. Once started, CircuitPython will blink a pattern every 5 seconds when no user code is running to indicate why the code stopped: Instead of needing drivers or a separate program for flashing (say, bossac, jlink or avrdude), one can simply drag a file onto a removable drive.

You'll also need a classic USB MicroB cable to program the Trinket, we don't include it as people tend to have too many USB cables in their desk drawer, but if you need one, you can get it from us here.

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Native hardware SPI, I2C and Serial available on two pads so you can connect to any I2C or Serial device with true hardware support (no annoying bit-banging). You can have either one SPI device or both I2C and Serial. Red #13 LED - this LED does double duty. Its connected with a series resistor to the digital #13 GPIO pin. It pulses nicely when the Trinket is in bootloader mode, and its also handy for when you want an indicator LED.

In general, you shouldn't have to update the bootloader! If you do think you're having bootloader related issues, please post in the forums or discord. To provide the number of pixels, assign the variable num_pixels to the number of pixels you'd like to use. In this example, we're using a strip of 8.

Three pins can also be used as hardware capacitive touch sensors with no additional components required This is the 3.3V OUTPUT pad from the voltage regulator. It can provide up to 500mA at a steady 3.3V. Good for sensors or small LEDs or other 3V devices.

If you are running a MakeCode program on Circuit Playground Express, press the reset button just once to get the CPLAYBOOT drive to show up. Pressing it twice will not work. macOS Digital #1 / A0 - this is connected to PA02 on the ATSAMD21. This pin can be used as a digital I/O with selectable pullup or pulldown, capacitive touch, analog input (use 'A0'), and true analog (10-bit DAC) output. It cannot be used as PWM output. NeoPixels can be driven by any pin. We've chosen A1. To set the pin, assign the variable pixel_pin to the pin you'd like to use, in our case board.A1.We've included diagrams show you how to connect the TSL2591 to your board. In these diagrams, the wire colors match the STEMMA QT cables and connect to the same pins on each board. For powering the pixels from the board, the 3.3V regulator output can handle about 500mA peak which is about 50 pixels with 'average' use. If you want really bright lights and a lot of pixels, we recommend powering direct from an external power source. BAT - This is a voltage INPUT pin, you can use it to connect a battery or other external power to the Trinket. It has a Schottkey protection diode so it is completely separate from the USB power input/output. You can put 3V-6V into this pin and it will be regulated down by the 3V regulator If you're using MakeCode on a Mac, you need to make sure to upload the bootloader to avoid a serious problem with newer versions of MacOS. See instructions and more details here. DriveDx and its accompanything SAT SMART Driver can interfere with seeing the BOOT drive. See this forum post for how to fix the problem. Windows 10