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I have been working on a development board for the STM32 Metal Detector for several weeks and today I received the first PCB that I had made so I can start the first tests. These PCBs are based on the STM32H7 development board which you can buy for a few € on AlliExpress, the purchase links are at the bottom of this post. The top PCB contains 6 buttons and a small I2C display and on the bottom PCB you have all the other components. There is a digital amplifier TAS2521 which can be configured for analog input and also for digital, the signal from the DAC processor is fed to the analog input. Furthermore, there are two TX outputs on the board for a sine signal which can drive, for example, MC34119 and also a square signal which drives an H-Bridhe consisting of four transistors. As the last one, there is an Input RX circuit which has a standard connection used by many metal detectors and is verified and functional. You can freely modify all components and connections according to your own ideas, as I am attaching all files for the upper and lower PCBs, and soon I will also add the first tests and code that we can develop and improve together.
https://github.com/WeActStudio/MiniSTM32H7xx
https://vi.aliexpress.com/item/10050...Cquery_from%3A
https://vi.aliexpress.com/item/10050...Cquery_from%3A
https://vi.aliexpress.com/item/10050...yAdapt=glo2vnm
https://vi.aliexpress.com/item/10050...Cquery_from%3A
I have been working on a development board for the STM32 Metal Detector for several weeks and today I received the first PCB that I had made so I can start the first tests. These PCBs are based on the STM32H7 development board which you can buy for a few € on AlliExpress, the purchase links are at the bottom of this post. The top PCB contains 6 buttons and a small I2C display and on the bottom PCB you have all the other components. There is a digital amplifier TAS2521 which can be configured for analog input and also for digital, the signal from the DAC processor is fed to the analog input. Furthermore, there are two TX outputs on the board for a sine signal which can drive, for example, MC34119 and also a square signal which drives an H-Bridhe consisting of four transistors. As the last one, there is an Input RX circuit which has a standard connection used by many metal detectors and is verified and functional. You can freely modify all components and connections according to your own ideas, as I am attaching all files for the upper and lower PCBs, and soon I will also add the first tests and code that we can develop and improve together.
https://github.com/WeActStudio/MiniSTM32H7xx
https://vi.aliexpress.com/item/10050...Cquery_from%3A
https://vi.aliexpress.com/item/10050...Cquery_from%3A
https://vi.aliexpress.com/item/10050...yAdapt=glo2vnm
https://vi.aliexpress.com/item/10050...Cquery_from%3A
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