i want to do the same ping project (ultrasonic sensor) by measuring the distance of the moving object but by nrf24l01 transceiver so if any one has an idea to help me in the code ?
If you are somehow thinking of timing RF pulses through the NRF, you are going to need a faster boat.....
Please don't post the same question on multiple threads.
it is not the same post if you really read it well you will find that the previous post is about doppler effect but this post about how to satisfies the same function but by the ultrasonic technique.(different ideas.)
thx.
Both posts are somewhat incomprehensible. If you believe this is a different question, perhaps you ought to explain exactly what help you're asking for, rather than outlining an ambiguous and poorly stated project and just asking for ideas.
If you're trying to use the nRF24L01 as an ultrasonic transponder, that doesn't make any more sense than using it to measure Doppler shift as you were proposing on the other thread. If you want to measure distance using an ultrasonic measuring technique then you need an ultrasonic transponder - in that case it's not clear what the nRF24L01+ has to do with the project, or what problem you're asking for help with.
sorry for confusion dear.
i use nrf24l01 because it penetrate the wall i want to measure the distance of a moving object behind the wall so i have to use something can penetrate the wall which is RF signal.
do you have any idea about that.
If the thing you're trying to detect moving is suitable to be detected by ultrasonics, and the range you need to support is of the order of a few feet, and the speed is low, then you could use an ordinary ultrasonic range finder of the sort commonly used for robot obstacle avoidance. Your Arduino would have no trouble driving that.
If you need to report the results wirelessly through a wall then you could use your RF24 transceivers, or Bluetooth, or WiFi, or Zigbee, or any of a range of other wireless solutions. You would need a compatible receiver at the receiving side. Depending where you want the data to go and what sort of wireless connection you choose you might be able to connect directly (e.g. WiFi, BT or Zigbee connecting directly to a PC) or via another Arduino which relays the data to a PC via the serial port.