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NEW PRODUCT – Adafruit USB Host FeatherWing with MAX3421E
Numerous microcontrollers as of late have USB ports on them, to program or debug, act like a keyboard or disk drive, or just ship information between a pc and your firmware. However do you know that you could additionally add a USB Host port? That signifies that your microcontroller challenge can have a keyboard or mouse or disk drive plugged into it – which opens up an enormous ecosystem of widespread off-the-shelf units that you could now combine. The Adafruit USB Host FeatherWing makes it simple so as to add USB Host help, particularly now that TinyUSB helps it within the Arduino library as a ‘native’ interface for host help.
This Wing makes use of the MAX3421E – a tried and true USB Host chip. It makes use of SPI plus an IRQ pin to ship information to only about any USB gadget. Be aware that as a result of the chip is older, and also you’re restricted to the SPI port velocity, you’re not going to get blazing 480Mbps excessive velocity information switch. However for primary HID interfacing, and even studying/writing to a Mass Storage gadget, it does work fairly effectively. There’s a well-known USB Host Library that can be utilized, and it’s specialty is AVR help, but in addition appears to help nRF52 and ESP32. We personally suggest utilizing the TinyUSB Arduino library – nonetheless the trade-off is that the chip should have TinyUSB help already which suggests it’s nice for RP2040, ESP32-S2 or S3, nRF52840, SAMD21/51 chips. Between the 2 libraries, simply be certain that your required Feather mainboard is supported earlier than buying!
Subsequent to the MAX3421E now we have a 5V 1A booster with 500mA fuse, which may present a pleasant clear 5V from the USB or Battery energy provide. An allow pin is accessible to energy cycle when desired.
Comes as an assembled Wing with some header. Solder on the header and plug right into a Feather Mainboard to develop it’s capabilities! Don’t overlook, you want driver help for the MAX3421E (see above for chips which are recognized working) and until you’re utilizing a generic mouse, keyboard, CDC serial or USB mass storage gadget additionally, you will want a USB driver that is aware of the best way to speak to the gadget – and writing a driver is non-trivial.
In inventory and delivery now!
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