{"id":28551,"date":"2021-09-16T10:20:59","date_gmt":"2021-09-16T08:20:59","guid":{"rendered":"https:\/\/gaudishop.ch\/?post_type=product&#038;p=28551"},"modified":"2026-08-25T17:50:03","modified_gmt":"2026-08-25T15:50:03","slug":"opentheremin-v4-electronics-and-antenna-kit-bundle","status":"publish","type":"product","link":"https:\/\/gaudishop.ch\/index.php\/product\/opentheremin-v4-electronics-and-antenna-kit-bundle\/","title":{"rendered":"OpenTheremin V4.5 Electronics and Antenna Kit Bundle"},"content":{"rendered":"<p>The OpenTheremin is a modern version of the legendary theremin instrument invented by Lev Theremin back in 1920.\u00a0 The theremin is played with two antennas (included in this bundle), one to control the pitch and one for volume. The electronic design is built with two heterodyne oscillators, same principle as the original Theremin. In this newest version 4.5 of the OpenTheremin, the Arduino compatible micro-controller is built in, pre-programmed and no soldering is required. The on board auto-calibration,\u00a0 linearisation and high quality digital to analog audio converter make this a real playable instrument (stand alone, does not require a computer to play).\u00a0 The characteristics of the sound can be changed by a hex wave table.<\/p>\n<p>The more than 10 years of experience in building good quality and affordable digital theremins lead to this new and improved design:<\/p>\n<p><b>Features:<\/b><\/p>\n<ul>\n<li>\u00a0 One board design with integrated Arduino, pre-programmed, no soldering required<\/li>\n<li>\u00a0 Pitch and volume antenna with excellent linearity and digital auto-tuning (one button press)<\/li>\n<li>\u00a0 State of the art USB-C connection for powering, easy access side mounted connectors<\/li>\n<li>\u00a0 Sensor Button for mute and automatic calibration.<\/li>\n<li>\u00a0 8 preprogrammed audio wave forms and 3 registers can be selected<\/li>\n<li>\u00a0 Two control voltage (CV) outputs for pitch and volume to connect to other devices<\/li>\n<li>\u00a0 Threaded inserts for stable mounting of the antennas and full aluminum tripod mount<\/li>\n<li>\u00a0 Waveform can be reprogrammed freely (stored in a look-up table)<\/li>\n<li>\u00a0 Can be powered by battery<\/li>\n<li>\u00a0 Completely open source hardware and software (OSHWA Certificate CH00001)<\/li>\n<\/ul>\n<p><b>The Kit includes the assembled, programmed and tested electronic board as well as mechanical parts to set up the OpenTheremin.<\/b><\/p>\n<p><b>Included in the kit:<\/b><\/p>\n<ul>\n<li>\u00a0 OpenTheremin V4.5 electronic board<\/li>\n<li>\u00a0 Volume and Pitch\u00a0 antenna (two parts with connector)<\/li>\n<li>\u00a0 2x Antenna plugs \/ 4 mounting screws and washers<\/li>\n<li>\u00a0 4x potentiometer shafts (6mm, click in)<\/li>\n<li>\u00a0 Aluminum tripod mount (1\/4&#8243; UNC thread)<\/li>\n<\/ul>\n<p>The antennas are made from anodized 6mm aluminum tubing and fit well with the theremin design and connectors.<br \/>\n<b>USB power adapter, cables and tripod are NOT included. Any USB-C cable and power-adapter from a smartphone will work.<br \/>\n<\/b>See also <a href=\"https:\/\/gaudishop.ch\/index.php\/product\/opentheremin-v4-deluxe-bundle\/\">OpenTheremin V4.5 Deluxe Bundle<\/a>.<b><br \/>\n<\/b><\/p>\n<p>Comes with printed build instructions.<\/p>\n<p>FREE SHIPPING worldwide.<\/p>\n<hr \/>\n<p>For more information see <a href=\"https:\/\/www.gaudi.ch\/OpenTheremin\/images\/stories\/OpenTheremin\/OTV4\/Instructions_OpenThereminV4.pdf\">Instruction Manual<\/a><br \/>\nand <a href=\"https:\/\/www.gaudi.ch\/OpenTheremin\/index.php\/community\/pictures-of-builds\">OpenTheremin website<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong>This bundle includes the OpenTheremin electronics board and the two antennas to build a playable instrument.<\/strong><\/p>\n","protected":false},"featured_media":28566,"template":"","meta":[],"product_brand":[],"product_cat":[17],"product_tag":[],"class_list":{"0":"post-28551","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-opentheremin","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/gaudishop.ch\/index.php\/wp-json\/wp\/v2\/product\/28551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaudishop.ch\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/gaudishop.ch\/index.php\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gaudishop.ch\/index.php\/wp-json\/wp\/v2\/media\/28566"}],"wp:attachment":[{"href":"https:\/\/gaudishop.ch\/index.php\/wp-json\/wp\/v2\/media?parent=28551"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/gaudishop.ch\/index.php\/wp-json\/wp\/v2\/product_brand?post=28551"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/gaudishop.ch\/index.php\/wp-json\/wp\/v2\/product_cat?post=28551"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/gaudishop.ch\/index.php\/wp-json\/wp\/v2\/product_tag?post=28551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}