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[T] Memory LCD

A project log for Tetent [gd0090]

A wireless input device that's slower than... thinking(?) but faster than any other character input method, theoretically.

kelvinAkelvinA 08/09/2022 at 03:320 Comments

I've been somewhat concerned about the cheap LCD's on the sides of Tetent due to their power consumption. I didn't want to use e-ink because of the low resolution. Whilst researching for the new #Tetent Timespy research project, I discovered "memory LCD" displays. For Tetent, there seems to be 3 options.

The bottom one is, as you can see, cheaper, but the viewing area is only something like 36x27mm. That might be fine, since the viewing area of the current screens is a 36mm circle. The design will likely use a slot instead of a circle. The top one has a 30.5mm circular area so might be a bit small.

The middle one has much higher availability. Unlike the bottom/top ones that is only sold at this single AliExpress store, the middle one is sold by a few, as well as thousands at Digikey. However, at 58mm in length, I don't think it's going to fit easily, if at all.

I'll just use the £10 one while it still exists.

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