I haven’t made any project changes yet. The project is still empty: no components, nets, schematic, or PCB layout have been added.
I’m currently blocked because there are no available ACUs, so AI design execution tools are unavailable. Once ACUs are available, the remaining work is:
Create a simple hand-solderable 1 Hz red LED blinker circuit.
Use a 9V battery connector and on/off switch for power.
Add through-hole or large hand-solderable parts, likely a 555 timer astable circuit.
Wire the schematic, verify LED current and timing values, then optionally create a PCB layout.
Recommended implementation when execution is available: NE555 timer, timing resistors/capacitor for ~1 blink per second, red LED with series resistor, 9V battery clip, SPST switch, and 0.1 µF decoupling capacitor.