Primary target platform is Arduino, however, it can also be used with any other micro equipped with SPI interface. But there was a solution that seemed a little more mature and tested the USB Host Shield from Circuits-at-Home which is based around a Maxim MAX3421E Full Speed (12Mbit/s) USB-SPI Peripheral/Host Controller. In order to get the board to do anything, you need to initialize the motor channel by toggling three parameters: First you need to set the motor direction (polarity of the power supply) by setting it either HIGH or LOW. As it turns out, USB host mode is something that is the preserve of but a few microcontrollers and support is rather patchy.
The Arduino USB Host Shield is based on the MAX3421E (), which is a USB peripheral/host controller containing the digital logic and analog circuitry necessary to implement a full-speed USB peripheral or a full-/low-speed host compliant to USB specification rev 2.0. The board supports USB 2.0 full/low speed operation. The Arduino USB Host Shield is based on the MAX3421E, which is a USB peripheral/host controller containing the digital logic and analog circuitry necessary to implement a full-speed USB peripheral or a full-/low-speed host compliant to USB specification rev 2.0. Plug the Arduino into your computer's USB port and open the Arduino development environment. The Arduino USB Host Shield allows you to connect a USB device to your Arduino board. So far I have the USB Host Shield set up on one Arduino Uno, connected to the standard USB port on another. USB Host Shield is an inexpensive development board designed to be used in embedded applications which require USB Host functionality. The benifit is that the 3.3V may also be used by 3.3V device such as maple and Microsoft gadgeteer board. So the 3.3V output is able to work with Arduino. I'm working on a project that needs to use USB to pass serial messages between Arduinos (I can't use I2C or SPI for a few reasons – I especially need USB's support for hot-swapping and address allocation). The reason we use only 1 translator is the Arduino is able to detect 3.3v as high level voltage.
0 kommentar(er)
