Digital clock with mechanical 7-segment display units

prusaprinters

<h3>Digital clock with mechanical 7-segment display units</h3><ul><li>This clock uses four mechanical 7-segment display units, at <a href="https://www.thingiverse.com/thing:5066794">https://www.thingiverse.com/thing:5066794</a></li><li>Here I provide the base to arrange four units, rear cover and clock codes</li></ul><h3>Video</h3><figure class="media"><oembed url="https://youtu.be/ZwclWyj2Rok"></oembed></figure><h3>How to make</h3><h5>You need</h5><ul><li>Four mechanical 7-segment display units, already published at <a href="https://www.thingiverse.com/thing:5066794">https://www.thingiverse.com/thing:5066794</a></li><li>2mm tapping screws</li><li>micro:bit</li><li>Ks0360 Keyestudio Sensor Shield V2, <a href="https://wiki.keyestudio.com/Ks0360_Keyestudio_Sensor_Shield_V2_for_BBC_micro:bit">https://wiki.keyestudio.com/Ks0360_Keyestudio_Sensor_Shield_V2_for_BBC_micro:bit</a></li></ul><p>(other micro controllers can be used if it can handle 4 servos)</p><h5>How to make</h5><ul><li>Assemble 4 display units. Follow the instructions at <a href="https://www.thingiverse.com/thing:5066794">https://www.thingiverse.com/thing:5066794</a></li><li>Attach display units to the base, using 2mm tapping screws</li><li>Fix the top of the neighboring display units using retainer.stl and screws</li><li>Attach Ks0360 board to the bottom of the base</li><li>Insert micro:bit to Ks0360 board</li><li>Set rear covers (print two instances)</li></ul><p><img src="https://cdn.thingiverse.com/assets/8e/2b/e8/76/6d/man.jpg"></p><p><img src="https://cdn.thingiverse.com/assets/58/35/2f/9a/80/bottom.jpg"></p><p><img src="https://cdn.thingiverse.com/assets/d8/1a/5f/7c/4b/4.jpeg"></p><h3>Adjustments of the position of the servos</h3><p>### offset adjustment</p><ul><li>visit the site at <a href="https://makecode.microbit.org/">https://makecode.microbit.org/</a> and upload check-offset2.hex</li><li>fill the "offmap" table with zeros</li><li>download the editted .hex file from the micro:bit site and flash it to the micro:bit board</li><li>Find the best offset values. A/B button increases / decreases the offset value. Press A and B buttons simultaneously to increase the number to be shown (0-9).</li><li>Write down the found offset values to the source code and check again.</li></ul><h3>using clock code</h3><ul><li>upload clock.hex to micro:bit site</li><li>Copy the offmap table from check-offset2.hex to clock.hex</li><li>download the .hex file and flash it to the micro:bit</li></ul><p>Category: Gadgets</p>