The Current Time : Hours and Deciminutes

RE: The Current Time : Hours and Deciminutes

navadeepganeshu — Mon, 18 Jan 2021 15:18:54 GMT

Wow! Loved the idea and build.

Matching matching with 4.7 [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-99281e85-891f-4d56-8efa-d3650d335355/contentimage_5F00_1.png:16:16] . I just realised that Arduino nano gives only 4.7V though its marked as 5V. Couldn't that drop be compensated with diode compensation circuit easily?

Good that it helped in this project as 5K resistors aren't common to get 10mA for the clock, yet seems so wrong to have marked 5V output onboard though it never supplies it.

RE: The Current Time : Hours and Deciminutes

shabaz — Sun, 17 Jan 2021 14:39:12 GMT

Hi Dubbie,

If the Arduino functions expose PWM easily (I think they do, but I've just not done it), that could be another approach (i.e. change the duty cycle, so that the average voltage varies). Anyway, as usual, there's many ways to tackle an idea!

Just to throw another idea out there for discussion, in the past there also used to be analogue meters with two needles, they used them for ham radio SWR meters.. I wish these meters would make a comeback for representing two pieces of data.

(Image source: aliexpress).

[View:/resized-image/__size/423x363/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-99281e85-891f-4d56-8efa-d3650d335355/contentimage_5F00_193667.png:423:363]

RE: The Current Time : Hours and Deciminutes

Fred27 — Sun, 17 Jan 2021 12:11:13 GMT

Needs more robots. [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-99281e85-891f-4d56-8efa-d3650d335355/contentimage_5F00_3.png:16:16] [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-99281e85-891f-4d56-8efa-d3650d335355/contentimage_5F00_938.png:16:16]

RE: The Current Time : Hours and Deciminutes

Andrew J — Wed, 13 Jan 2021 14:50:53 GMT

Got to give 10 out of 10 for perseverance! It's a great, off the wall idea.

RE: The Current Time : Hours and Deciminutes

genebren — Tue, 12 Jan 2021 15:45:28 GMT

Dubbie,

Interesting concept for a clock. I was wondering if your mind went down the path of using binary weightings for the current sources. As all the currents sum prior to the meter, you could use a combinations of 1ma, 2ma, 4ma and 8 ma (only four outputs) to represent 0-12ma (hours). By changing the current ranges, you could do the same thing with minutes and seconds, using 0.1ma, 0.2ma, 0.4ma, 0.8ma, 1.6ma and 3.2ma to represent 0-5.9ma (only 6 outputs for minute and/or seconds).

Still pretty cool!

Gene