2023-08-31 (Th) GrinderCompassMKII Fancy springs but no feedback

I could not find brass strips thinner than my current ones, but I found a narrow version. I tested their ability to oscillate in one direction by pressing one against a table and flicking at an angle, where it moved perpendicular to the table instead of diagonally. I soldered a chuck of brass to the end and bent it into a spring the same shape as before, but the metal was still too rigid.

I added more weight in the form of three brass nuts soldered in a line, but they were prone to lateral movement, which would cause problems. I hoped this design would let me connect threaded rods to ratchet the weight up slowly, but it failed.

Three brass nuts

I experimented with differently shaped hammers by soldering short segments of 1/8" (3mm) brass rods together. I needed more weight to get enough movement, and adjusting them was tricky because I had to bend the spring, which yielded imprecise results.

Two hammer designs

GitHub files for GrinderCompass
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2023-08-29