Hello
I have a probject in detecting the distances of objects using Ultrasonic Sensors. However I'm very new and I have no experience in Arduino, so could you help me for some advices to choose the right Arduino board.
In my project I want to use 6 ultrasonic sensors operating at 40kHz, 10 bit A/D. So if i sample the signal with 80kHz, then which Arduino board is suitable for my project?
And also what would the reading output of the sensor look like if there are several objects in the detecting zone? ( I can not decide which ultrasonic sensor I have to use yet, but it would not be PING sensors cause it's too big for my project. I know it's not good that I dont specify the sensor. I'm really sorry for this.)
That's a lot of samples/second - gonna need a fast board like the Due.
Don't ultrasonic sensors use digital signals? You send a ping out, measure the time it takes to pick up an echo - and don't really use the level of the echo.
It only tells you about what is perpindicular to the sensor, otherwise the ping echo goes off in some other direction that the sensor does not see.
Instead of 6 sensors, you could have one mounted on a stepper motor, pan back & forth and combine the known angle of the stepper with distance returned to paint your picture of the surroundings. Could probably stick with the simpler 328P/1284P/2560 series processors for that - I'd go with 1284P for the 16K of SRAM for storing data on the returns.
CrossRoads:
That's a lot of samples/second - gonna need a fast board like the Due.
Don't ultrasonic sensors use digital signals? You send a ping out, measure the time it takes to pick up an echo - and don't really use the level of the echo.
It only tells you about what is perpindicular to the sensor, otherwise the ping echo goes off in some other direction that the sensor does not see.
Instead of 6 sensors, you could have one mounted on a stepper motor, pan back & forth and combine the known angle of the stepper with distance returned to paint your picture of the surroundings. Could probably stick with the simpler 328P/1284P/2560 series processors for that - I'd go with 1284P for the 16K of SRAM for storing data on the returns.
Thanks very much for your help and suggestion. It's really helpful for me. Thanks again CrossRoads