A detailed DIY metal detector electronics device, compact handheld embedded system, open PCB render, green FR4 board with white silkscreen, STM32 microcontroller in LQFP48 package, AD8221 instrumentation amplifier, MCP602 op-amp, TC4427 MOSFET driver, two IRFZ44N MOSFETs, LM2596 buck converters, AMS1117 regulator, TFT 320x240 color display, small speaker amplifier LM386, tactile buttons, battery connector, coil connector, clean analog and digital sections, labeled power stage, RX stage and TX stage, realistic copper traces, soldered SMD components, professional engineering prototype, high detail, sharp focus, studio lighting, isometric view, white background, product showcase, realistic shadows, no human hands, no extra objects відповідай українськю