7 Segment Clock - Small Printers Edition
Introduction: 7 Segment Clock - Small Printers Edition
Update - 2021/07/15
Sketch v7 available. I also recommend having a look at the notes about electronics when building one of my things! https://www.instructables.com/ClockSketch-V7-Part-...
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Yet another 7 Segment Clock. xD
Although I have to say it doesn't look that crazy when watching my Instructables profile. It probably get's more irritating the moment you have a look at my thingiverse profile.
So why did I even bother to do another one? Actually the answer is pretty simple...
While playing around with another project I came up with another way to route the led strip inside the modules. To "test my theory" I just had to build one to make sure it works out as expected.
Another major aspect while designing this was people with very small printers. My other things usually are printable on replicator-style printers and i3-style printers with common bed sizes - this one here requires a maximum of 107mm x 89mm x 23mm, so it is printable on printers like the Wanhao i3 Mini (100x120).
Also this is the first of my 7 segment clocks using led strips with 30 leds/m. The other ones are using 60 leds/m, so this is a bit different.
Each segment is lit by 2 leds, so there's 28 leds inside the double digit-modules and another 4 inside the dots-module. Total 60 leds, no "wasted ones" in between (+32 leds if building the 6 digit version).
The finished clock is 234mm x 93mm x 38mm. 1014
(360mm wide for 6 digits version).
Step 1: Notes
This documentation will miss quite a few details, like schematics, power limits and so on. Basically it is exactly the same as my other clocks, like S7ripClock here on Instructables. Please have a look at that one for details, this is using the same electronics and the sketch is based on the same source. Requirements are the same with some differences:
Instead of 9x M3 6-10mm screws you'll need:
12x M3 (8-12mm, I've used 8mm) (20 pcs if building the 6 digit version)
2x M3 (12-16mm, I've used 14mm)
Instead of LED strips with 60 leds/m you'll need:
60x WS2812B leds, 30 leds/m (other things like non-coated etc. apply, read S7ripClock instructions!)
Everything else is identical. Arduino/ESP (experimental) support, schematics, buttons, usage instructions.
Usage instructions/Features on YouTube
Update - 22.12.2020
In case you'd like to build this and do own a printer with a bigger build plate (object: 231.4mm x 85.2mm) have a look at Step 9 before starting to print parts...
Step 2: 3D Printed Parts / Software Sketch
To build the clock as shown you will need:
2x Frame_LR.STL
2x Cover_LR.STL
1x Frame_Dots.STL
1x Cover_Dots.STL
1x Diffusers_Dots.STL
2x Diffusers_LR.STL
1x Bracket_A.STL
1x Elec_Case.STL (includes spacer-part, case lid and two "hold buttons in place"-things)
1x Feet.STL
1x Cable_Covers_A.STL
Additional parts If building the 6 digit version:
1x Frame_X.STL
1x Cover_X.STL
1x Frame_Dots.STL
1x Cover_Dots.STL
1x Diffusers_LR.STL
1x Diffusers_Dots.STL
1x Bracket_B.STL
1x Cable_Covers_B.STL
Wall widths are always multiples of 0.5mm, so I recommend printing this using an extrusion width/line width of 0.5mm. Using medium print speeds the total print times are roughly 9.5 hours for all the black parts, 3 hours for the diffusers.
No supports needed, no overhangs > 45° and no bridging or anything that might make this a difficult print. Just avoid "the elephant's foot" ;)
Previews shown are at 60mm/s infill, 36mm/s outer perimeters and 42mm/s for solid infill at 0.25mm layer height using 2 perimeters/outlines/shells. 1014