I am running 3 Arduino Mega cards each on a separate comport 3, 4, 5. This is a Win 7 64 bit PC clocked at 3.7 Ghz. These Megas are communicating with a flight sim using DCS-bios. Was working ok at start, but the cards are affecting other devices connected to other USB ports. Device manager appears to be confused, connecting and disconnecting these other USB devices. Running 1 Arduino Mega seems fine; running 3, however, causes device manager confusion.
Thanks
Rickey
Are you using the computers USB ports for this and other USB devices ?
It could be you have reached the power limits for the USB ports.
Could you take a few moments to Learn How To Use The Forum.
It will help you get the best out of the forum as a whole.
Bob.
Thanks.
All Arduino boards powered and connected through powered hubs
Please describe the way it is misbehaving with multiple devices. Also, are these genuine/faithful cloned with 16u2 for serial, or ch340g clones?
If the PSU for the hubs is big enough to support the Arduinos then we would need a schematic of what else is connected to them. (hand drawn will do)
Don't forget each board can only draw 500mA from the hub.
Also don't forget some additional items conned to the boards may draw more than that and need their own PSU rated for the combined total of all items connected to that board.
Some additional help in these two posts.
Bob.
Thanks for the responses! I have not done enough testing to point to the Arduino. This may be related to a USB power problem limit. I am using 9-2.0 USB ports (controllers to interface to game). 3 USB ports are Arduino Mega boards; other 6 ports are controls for the DCS aircraft. I first need to break up all USB inputs and distribute them across two powered HUB's (USB Power management). Currently, everything is on one powered USB HUB (assorted are direct connect to PC USB 2.0).
The symptoms: With the Game application (DCS) is not running the USB ports are stable. When the game is running, periodically all the USB ports disconnect for an instance, then reconnect. This is a continuous cycle and once it starts it render's the game unplayable. When the game is exited, the cycle of connecting and disconnecting continues. All of the power options and settings (Win 7 64) on the USB are disabled. (Not sure that I have USB selective suspend settings turned off--need to check) The Device manager does show 1 Arduino on Com 4 disconnecting and most other USB connections on powered HUB disconnecting.
This PC is overclocked about 500Mhz (4.5Mhz) and has 8G Ram.
I do believe this is ralated to over powering USB, unless PC is unstable with OC selected and DCS game running? I will pull all Arduinos off PC and test application to see if any changes. Will have to be a systematically conducted test.
Rick
Yes please get back to us when you have verified your power requirements.
If you need help with that we would need details in the form of schematics and such.
Some electronic types of fuse need a power cycle to reset and it does sound plausible at this time to be part of your issue.
As for overclocking you may want to reset your computers bios to stock for more stable testing.
Bob.