PI design

[detecto]

Here is a new project that i am working on.
Its based on STM32F334 MCU, 12 bit ADC, 12 bit DAC for audio.
One interesting feature is that part of power from TX is stored in capacitor and than reused in order to increase battery life.
Detector is capable of discriminating between metals based on conductivity.
Controls is over encoder and all the data is shown on i2c oled display.

[detecto]

[Nightryder]

Good luck!

[Detectorist#1]

More details? Bipolar TX or unipolar? With so many ICs maybe ADC is used only for the final analysis of the RX signal. At which stage is made conductivity analysis?

[detecto]

More details? Bipolar TX or unipolar? With so many ICs maybe ADC is used only for the final analysis of the RX signal. At which stage is made conductivity analysis?

Its unipolar TX and there are many Ics because detector has 4 channels, but i am quite fast doing the ADC.
For now i am using internal STM adc, next step will be updating this with STM32H753 MCU + AD7768 ADC.

[Detectorist#1]

Hi detecto,
Thank you for this information.