Where can i buy nu25c16t?

[vovo255]

Where can i buy nu25c16t? I rummaged through the entire Internet, I can not find anywhere. Where did you buy them?

[fritztoch]

I believe there is an equivalent part TCRT16-40 which is available on AliExpress and Amazon.

[vovo255]

But is it 40 kHz? This transmitter will suit you? You have 25 kHz.

[SCWhite]

@vovo255
HI, I can confirm that 40kHz works jamming the mic (not sure the performance compare with 25kHz).
but you may need to change the code and some component.
may be try TCT25-16 ?

[ozw1z5rd]

Where can i buy nu25c16t? I rummaged through the entire Internet, I can not find anywhere. Where did you buy them?

You find them on eBay https://www.ebay.com/itm/16MM-Ultrasonic-Sensor-Probe-Transceiver-Receiver-TCT40-16T-R-NU25C16T-1-/272708217220

[pracdaske]

@SCWhite I'm planning on recreate the device with a 40Khz transmitter. Which are those changes on the code that you mention to confirm that it worked with this frequencies.

[T-vK]

That ebay offer is extremely expensive and includes the R-variant which is basically a microphone rather than a speaker. You'd pay like $63 for 23 of those.
You find much better offers on aliexpress. See #6

[pulpon6]

transmitter, receiver or transceiver 25Khz?

[SCWhite]

in this case, you will just be using "transmit"
so transmitter and transceiver should both work.

[pulpon6]

And where can I buy nu25c16t ?