Open AAJAY5 opened 1 year ago
VBUS 5V ( With cut on PCB)
Why cut 5V? Can you verify with a meter that 5V is coming out the USB type A connector? If not the USB device, it is not receiving any power.
Circuits At Home 2011 USB Host Shield Quality Control Routine Reading REVISION register... Die revision 03 SPI long test. Transfers 1MB of data. Each dot is 64K................ SPI long test passed GPIO test. Connect GPIN0 to GPOUT7, GPIN1 to GPOUT6, and so on Test failed. Value written: 00 Value read: FF Press any key to continue... GPIO test passed. PLL test. 100 chip resets will be performed Reset number 100 Time to stabilize - 467 cycles Checking USB device communication.
Reset complete. Waiting for the first SOF... Getting device descriptor Descriptor Length: 00 Descriptor type: 00 USB version: 0000 Device class: 00 Device Subclass: 00 Device Protocol: 00 Max.packet size: 00 Vendor ID: 0000 Product ID: 0000 Revision ID: 0000 Mfg.string index: 00 Prod.string index: 00 Serial number index: 00 Number of conf.: 00
Apply 5v to the USB output, the cut line is for operating on devices that cooperate with 3.3v supply, which there aren't many of those, typical use case is a self powered device, such as powered hub, or DSLR camera.
There is no need to connect reset, in fact, don't connect it at all. The chip is reset via software.
Connections
is your arduino 5V ? the shield should only be powered and communicate with 3.3V as you are saying you're using a nano, it would probably be the cause, and you might have fried your shield
i got a shield mini just like yours working with a nano, but trough a level shifter
from the datasheet of the max chip :
you are supplying 3V to the chip, which is whthin its limits, but then communicating at 5V, which is way too much for it
Hi,
I've seen other users saying this Chinese board doesn't work, I bought one and couldn't get it to work, years ago, when I have time I'll try again.
But I have the shield board for Arduino UNO which has two IC 74HC125 to convert 5V and 3.3V, this one works, I just don't remember why I put a jumper from the RESET button to pin 12 of the IC 74HC125 next to the IC MAX, the diagram already shows this connection, maybe my board was defective.
Diagram: https://5.imimg.com/data5/XK/RR/MY-1833510/usb-host-shield-for-arduino.pdf
Desc Test
Board and Version Info
Connections