» Electronics » Arduino »Mechanical display with servos

Mechanical display with servos

Arduino / Clock
Added 2 commentary




The principle of operation of the proposed display, which was made and built by Instructables under the nickname alstroemeria, is as follows: segments advanced by servos cast a shadow, which makes them visible. The remaining segments, located in the same plane with the background, merge with it.

It is clear that homemade It turns out to be expensive, because for her the master acquires as many as 28 such servos:




And a management module that connects to Arduino like this:



The real-time clock (RTC) module against this background seems to be a very small expense.

Mechanical display with servos


Having acquired all the necessary components, the master so far puts them aside to work on templates for making the mechanical part of the display. He gets four files: 1, 2, 3, 4. The wizard displays files 1 and 3 twice on a cutting plotter, and 2 and 4, one at a time, all on a 1: 1 scale, and gets six parts, some of which resemble old punch cards in some way. You can also print, also on a scale of 1: 1 and in the same quantities, and cut manually.






Dremel cuts hollow metal pins with a length of 20 mm and tubes with an external diameter slightly larger than the external diameter of the pin with a length of 10 mm:




Glues layers with thick double-sided tape, adds tubes:












It adds movable segments glued to the pins passed through the tubes, on the reverse side glues steel wire pushers to the same pins, and this is where the pins are hollow:










It bends pushers, glues servos and connects to them:



Closes the servos with the remaining perforated sheet:





The servo control module connects according to the scheme given at the beginning of the article. The drives themselves are connected to the module in the order corresponding to the standard segment designations:



The RTC module connects as follows: SDA - pin 4 of the Arduino, SCL - pin 5, plus power and common wire - parallel to the corresponding Arduino lines. Here is the result:




The wizard sets the time in the RTC module with this sketch (you need the RTClib library):

  Sketch here


Everything works:



So the mechanical display of a non-trivial design is ready.
10
10
10
2
Added 2 commentary

Add a comment

    • smilesmilesxaxaokdontknowyahoonea
      bossscratchfoolyesyes-yesaggressivesecret
      sorrydancedance2dance3pardonhelpdrinks
      stopfriendsgoodgoodgoodwhistleswoontongue
      smokeclappingcraydeclarederisivedon-t_mentiondownload
      heatirefullaugh1mdameetingmoskingnegative
      not_ipopcornpunishreadscarescaressearch
      tauntthank_youthisto_clueumnikacuteagree
      badbeeeblack_eyeblum3blushboastboredom
      censoredpleasantrysecret2threatenvictoryyusun_bespectacled
      shokrespektlolprevedwelcomekrutoyya_za
      ya_dobryihelperne_huliganne_othodifludbanclose
2 commentary
Guest Ivan 0
Reply To quote A complaint
You can also make colored plexiglass with backlight inside. When they are put forward, the ends should glow.
0
Reply To quote A complaint
segments advanced by servos cast a shadow, making them visible
It seems that appropriate highlighting would not hurt to create stable shadows. scratch

DIY categories

We advise you to read:

Hand it for the smartphone ...