Lrl from Italy

[TufaN]

[hakandurmaz]

Looks good. Must try.

[TufaN]

Hello friends. Why is this site so quiet?

[FrancoItaly]

Hello friends. Why is this site so quiet?

I do not know.

[TufaN]

I think all my friends managed to do LRL. Am I the only one who couldn't do it?

[FrancoItaly]

Original.zip

I do not know.

The forum has all the details for building my LRL, but I'm attaching the original version and the Dream-Man one. The original version only has the sensor PCB, while the display stage must be built by you. To prevent self-oscillation, it's best to make two PCBs, one for the display stage and one for the sensor stage. The display stage with 3 LEDs omits the power supply section, which is the same as the display stage with 1 LED, and the supply voltage stabilization. The setup is quite laborious, but it's necessary to achieve good sensitivity.

[TufaN]

[ATTACH]n106264[/ATTACH]

The forum has all the details for building my LRL, but I'm attaching the original version and the Dream-Man one. The original version only has the sensor PCB, while the display stage must be built by you. To prevent self-oscillation, it's best to make two PCBs, one for the display stage and one for the sensor stage. The display stage with 3 LEDs omits the power supply section, which is the same as the display stage with 1 LED, and the supply voltage stabilization. The setup is quite laborious, but it's necessary to achieve good sensitivity.

Thank you very much to my engineer friend Franco Italy.

[hakandurmaz]

[hakandurmaz]

I made some adjustments to Dream Man Master's PCD. Friends, check it if there is no mistake, I will share the PCB.

[FrancoItaly]

I made some adjustments to Dream Man Master's PCD. Friends, check it if there is no mistake, I will share the PCB.

nice work, I didn't do it but surely there will be someone who will help.

[mahdi80]

I finished the version 20mhz today.I have not tested in practice yet.But in practice it works like version 8mhz.With 22 pf capacitor, the output of the sensor is 5 volts dc.Touching the telescopic antenna reduces the output between 300 and 700 mV.I connect the sensor output to a 32-bit microcontroller.The measurement accuracy with the 32-bit microcontroller is very high and the smallest change is displayed.Currently I am facing a real test location challengePlease guide me in this regard

Could you provide me with some information about adding an lcd

[hakandurmaz]

20MHz is very sensitive. The harmonics need to be adjusted carefully. I've done 20MHz before, but I'll try again. I don't know anything about digital.

[FrancoItaly]

20MHz is very sensitive. The harmonics need to be adjusted carefully. I've done 20MHz before, but I'll try again. I don't know anything about digital.

A display with 3 LEDs like mine is sufficient.

[hakandurmaz]

Would you recommend adding a low voltage part?

[FrancoItaly]

Would you recommend adding a low voltage part?

Simply because the power needs to be stabilized since even a small variation in battery voltage would cause a large variation in the signal, and it is better to know when it is time to change the batteries, before instabilities appear. The IC 7812 requires a voltage of at least 14V at its input, I suggest adjusting the intervention of the indicator LED to 15V.