Is it possible for Fusion Brain and iBus to communicate? I am planning to use Fusion Brain, Fusion Brain photo sensor and iBus to turn on the headlights when it becomes dark. From what I understand, Fusion Brain has capability to turn on headlights but would prefer iBus to make the wiring simpler.
Fusion Brain Version 6 Released!
1.9in x 2.9in -- 47mm x 73mm
30 Digital Outputs -- Directly drive a relay
15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
Buy now in the MP3Car.com Store
I'm currently running steering commands at 20Hz, but in theory it would allow me to increase processing speed to like 50Hz, without needing to send stuff down the USB bus that often, and without any processing delays when the computer gets busy. I'm only getting GPS corrections at 5 or 10Hz, so in theory, I wouldn't need to have communication between the FB and computer any faster than that.
I've looked at the arduino, but I much prefer the FBs outputs being full voltage switching that can power a relay. No need to add extra chips on to do stuff like that.
Is iBus something like CanBus? If so, maybe a CanBus to USB converter would work, but then you'd need to find a way to issue commands right to the bus, and of course you'd have to figure out what the commands are to issue.
The FB and computer talking at 250Hz is awesome, but I've already got the computer doing a crap ton of stuff every time it gets a new GPS location in. What I'm trying to get away from is any delay on the steering loop, even if only for 50ms. I have a yaw sensor that needs consistent readings to get a stable vehicle heading. I'm already running the FB control loop in another thread to be non-blocking, but with a single core CPU, there is always going to be some level of blocking. In a perfect world, I'd let the PIC deal with all the simple stuff like running the yaw rate through a kalman filter and issuing a steering command accordingly, then just send major steering updates as I get them from GPS. Doing what I'm doing now, I can visually see the IO delay to the FB when I do more strenuous processing. Fortunately, it's subtle enough that it doesn't bother anything.
Seems I've hijacked the thread.
Interesting. I'd think a full CPU would be better suited for blasting away at mathematical stuff than a PIC, but you're welcome to try
also is 20hz or 50mS really not enough? I'd think 1 second would be more than sufficient. you're not moving very fast...