Under Device Manager, the board shows as 'USB Device (Device Descriptor Request Failed)'.I'm pretty sure the cable is working correctly (It works for exchanging data on a phone, and I've tried a few different ones).I'm definitely using USB 2 ports, and I have tried it connected directly to the PC and via a USB hub.Following the Introducing Gemma guide I've installed the Adafruit drivers and I'm now trying to get it to connect via USB.Īfter connecting, the board shows the green power LED, but not the pulsing red LED, and Windows shows the 'USB device not recognised' message. It could be sped up more by incrementing i in larger steps (instead of 64 steps a smaller number of steps could be used).I have a V2 Adafruit Gemma from the Gemma starter pack, and I'm running Windows 10 Home (version 3), on a 64-bit laptop. This program is specific to creating a signal out. Note that the preloaded demo program also does several other things. The documentation provided for the Trinket M0 contains a small CircuitPython program specifically made for creating a ramp without other features. Note that if the USB cable is connected this board enumerates as a composite device capable of many things.Įxample output from board using demo program (sample from near peak voltage): D0: 3.09ĭ0: 0.07 Alternate example Program that Generates a Ramp For example if one connects the analog out pin to analog in 0 the board will read the current voltage and send it via USB virtual com port to a Putty session. The output starts close to zero and ramps up close to 3.3 volts. The demo program loaded generates a slow ramp voltage.
My initial focus was the voltage out on the analog output pin. The Trinket M0 ships loaded with CiruitPython loaded and a demo program preloaded.
Note virtual com port number may be different an different systems. No drivers need to be installed for windows 10, for mac or for Linux. Initially it occurred to me that it could do the job of a USB to serial to adaptor at a lower cost and much more besides. Initially impressed by low price combined with numerous features. Obtained first Trinket M0 on September 29, 2017. Alternate example Program that Generates a Ramp.
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