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10 years ago.
Maximun voltage on signal HCDR04
Hi, considering that mbed board works with a maximun Input/Output voltage of 3.3 volts, what is the maximun voltage emitted by the sensor HCSR04, if the amplitude of the signal is 5 volts, could it damage my board?
Have you tried your code with a real sensor and a mbed, did you have any problem?
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1 Answer
10 years ago.
You have an LPC1768, it is 5V tolerant: 5V signals will not damage it. Since most 5V sensors also accept 3.3V as high voltage, you can directly interface with 5V sensors.
Do take care this is not the case for all devices, the Nucleo ones are mostly 5V tolerant iirc, the Freescale ones aren't.