![](https://cdn.myportfolio.com/e7aeb59007e45ff046b511670672b9cb/9e14e74c26e0cae874731c80_rw_1920.jpg?h=83e6e150ac7df2bf61e3c72dd82d08a2)
Early design intent (not my own) for a hybrid spotlight powered by extension cord, 18V battery, or 12V car outlet.
![](https://cdn.myportfolio.com/e7aeb59007e45ff046b511670672b9cb/78e172fdf94cc1cc8e79ec44_rw_1920.jpg?h=4d78be3bc5b9e61986752cf0bdae4a6f)
![](https://cdn.myportfolio.com/e7aeb59007e45ff046b511670672b9cb/b866f560e5316be33d3580ba_rw_1920.jpg?h=d2affa80e9c42669c910149b2274e142)
![](https://cdn.myportfolio.com/e7aeb59007e45ff046b511670672b9cb/9a68b2c62e4f678b45a4cc9d_rw_1920.jpg?h=2f81275fbdd18b69bcacc6d3231bd6e6)
The maze of electronics that I managed to pack into the housing included an AC-DC adapter, 3 buck converters, an Arduino Tiny, an AC plug, an 18V battery connector, a 12V coaxial port, an LED driver, and probably something I'm missing. This spotlight prototype had a white LED with 3 brightness settings controlled by PWM and a red LED.
![](https://cdn.myportfolio.com/e7aeb59007e45ff046b511670672b9cb/bfc18c5287360e0d46eecece_rw_1920.jpg?h=c01715541466a9421d6b49eb5b4ee8a5)
![](https://cdn.myportfolio.com/e7aeb59007e45ff046b511670672b9cb/af628ae969f659ccf2d7b4bd_rw_1920.jpg?h=922cf2e34a1ada57d81e23e91a4128b8)