{"id":6524,"date":"2013-10-18T08:25:09","date_gmt":"2013-10-18T08:25:09","guid":{"rendered":"http:\/\/178.62.14.192\/?p=6524"},"modified":"2013-10-18T08:25:09","modified_gmt":"2013-10-18T08:25:09","slug":"the-raspberrypi-wobbulator","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=6524","title":{"rendered":"The #RaspberryPi Wobbulator"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/asliceofraspberrypi.blogspot.co.uk\/2013\/10\/raspberry-pi-wobbulator-introduction.html\"><img decoding=\"async\" alt=\"A Slice of Raspberry Pi: Raspberry Pi Wobbulator - An Introduction\" src=\"\/blog\/wp-content\/uploads\/2013\/10\/wobby11.jpg\" \/><\/a><\/p>\n<p>Over on Slice of Raspberry Pi, they&#8217;ve been developing a sweep generator, also known as a wobbulator. Here&#8217;s what they say about it (it&#8217;s a bit beyond me!)<\/p>\n<blockquote><p>A wobbulator (or sweep generator) is a piece of test equipment which is used in conjunction with an Oscilloscope to measure the frequency response characteristics of a circuit. It uses a \u201cramp\u201d or \u201csawtooth\u201d function generator connected to a Voltage Controlled Oscillator (VCO) to produce an output sweep over a defined range of frequencies. The response characteristics of the circuit under test can then be displayed on an Oscilloscope. A wobbulator is a useful tool for aligning the intermediate frequency (IF) stages of superhet receivers, but can also be used to measure the frequency response characteristics of RF filters and other circuits.<\/p><\/blockquote>\n<p><a href=\"http:\/\/asliceofraspberrypi.blogspot.co.uk\/2013\/10\/raspberry-pi-wobbulator-introduction.html\">Read more about it here<\/a>\u00a0and <a href=\"http:\/\/asliceofraspberrypi.blogspot.co.uk\/2013\/10\/raspberry-pi-wobbulator-conceptual.html\">start reading an ongoing series here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Over on Slice of Raspberry Pi, they&#8217;ve been developing a sweep generator, also known as a wobbulator. Here&#8217;s what they say about it (it&#8217;s a bit beyond me!) A wobbulator (or sweep generator) is a piece of test equipment&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=6524\">Read more &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[22,50],"tags":[],"class_list":["post-6524","post","type-post","status-publish","format-standard","hentry","category-geeky-techiness","category-making"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The #RaspberryPi Wobbulator - Raspberry Pi Pod<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=6524\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The #RaspberryPi Wobbulator - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"&nbsp; Over on Slice of Raspberry Pi, they&#8217;ve been developing a sweep generator, also known as a wobbulator. 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They have created a\u00a0combination digital oscilloscope and function generator that runs an interface on a Raspberry Pi and takes readings and generates functions via a PIC32 chip over\u2026","rel":"","context":"In &quot;Education&quot;","block_context":{"text":"Education","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=17"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/people.ece.cornell.edu\/land\/courses\/ece4760\/FinalProjects\/f2016\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/images\/PICPiImage.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/people.ece.cornell.edu\/land\/courses\/ece4760\/FinalProjects\/f2016\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/images\/PICPiImage.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/people.ece.cornell.edu\/land\/courses\/ece4760\/FinalProjects\/f2016\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/images\/PICPiImage.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/people.ece.cornell.edu\/land\/courses\/ece4760\/FinalProjects\/f2016\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/images\/PICPiImage.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/people.ece.cornell.edu\/land\/courses\/ece4760\/FinalProjects\/f2016\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/images\/PICPiImage.jpg?resize=1050%2C600 3x, https:\/\/i0.wp.com\/people.ece.cornell.edu\/land\/courses\/ece4760\/FinalProjects\/f2016\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/ak634_jmw483_dm797\/images\/PICPiImage.jpg?resize=1400%2C800 4x"},"classes":[]},{"id":12233,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=12233","url_meta":{"origin":6524,"position":1},"title":"DIY oscilloscope uses a Raspberry Pi and LEGO!","author":"Michael Horne","date":"19 March 2015","format":false,"excerpt":"Steve Schuler wanted to build an oscilloscope. He used\u00a0LEGO, an Erector set, a LittleBits motor and a Raspberry Pi which generates the PWM necessary to drive the motor.\u00a0The motor is hooked up to a spinning mirror that sweeps the laser across some graph paper, creating a straight laser line. The\u2026","rel":"","context":"In &quot;Geeky Techiness&quot;","block_context":{"text":"Geeky Techiness","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=22"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/cdn.instructables.com\/FGB\/W1HK\/I7D5VDA4\/FGBW1HKI7D5VDA4.MEDIUM.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cdn.instructables.com\/FGB\/W1HK\/I7D5VDA4\/FGBW1HKI7D5VDA4.MEDIUM.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/cdn.instructables.com\/FGB\/W1HK\/I7D5VDA4\/FGBW1HKI7D5VDA4.MEDIUM.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":3921,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=3921","url_meta":{"origin":6524,"position":2},"title":"Displaying System Information and Overclocking the #RaspberryPi","author":"Michael Horne","date":"3 May 2013","format":false,"excerpt":"Some nice little snippets of command line courtesy of A Slice of Raspberry Pi. To find out the clock speed of the ARM processor type \"vcgencmd measure_clock arm\" at the command line prompt and press\u00a0Enter:pi@raspberrypi\u00a0~ $\u00a0vcgencmd measure_clock arm_This should return a result similar to the following, which in my case\u2026","rel":"","context":"With 1 comment","block_context":{"text":"With 1 comment","link":"https:\/\/www.recantha.co.uk\/blog\/?p=3921#comments"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7435,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=7435","url_meta":{"origin":6524,"position":3},"title":"Turn a #RaspberryPi into an oscilloscope","author":"Michael Horne","date":"9 January 2014","format":false,"excerpt":"Instructables user 'tnkrmnz' has written a tutorial on using a MSO-28 Oscilloscope with a Raspberry Pi to create a portable unit that you can connect to with your smartphone. Part of the tutorial includes turning the unit into a wifi access point for easy connection.This could prove very useful for\u2026","rel":"","context":"In &quot;Accessories&quot;","block_context":{"text":"Accessories","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=54"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/cdn.instructables.com\/F1F\/A7EH\/HOUG1GJM\/F1FA7EHHOUG1GJM.MEDIUM.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cdn.instructables.com\/F1F\/A7EH\/HOUG1GJM\/F1FA7EHHOUG1GJM.MEDIUM.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/cdn.instructables.com\/F1F\/A7EH\/HOUG1GJM\/F1FA7EHHOUG1GJM.MEDIUM.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":1558,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=1558","url_meta":{"origin":6524,"position":4},"title":"The custom pulp magazine cover generator","author":"Michael Horne","date":"28 January 2013","format":false,"excerpt":"Totally unrelated to the Raspberry Pi, but interesting for those of you into all things retro and steampunk. This is a custom retro\/pulp\/sci-fi magazine cover generator. Great fun! PULP-O-MIZER: the custom pulp magazine cover generator.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":18804,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=18804","url_meta":{"origin":6524,"position":5},"title":"Multi-touch skin devices use a Raspberry Pi Zero to trigger actions","author":"Michael Horne","date":"11 May 2018","format":false,"excerpt":"Hi everyone. Been battling \"the blues\" for a few days. I still am, but less so, so I thought I'd \"get back on the horse\" so to speak. Scientists from\u00a0Germany's Saarland University, led by\u00a0Prof. J\u00fcrgen Steimle, have been developing a technology for the past three years which they've called Multi-Touch\u2026","rel":"","context":"In &quot;Raspberry Pi Zero&quot;","block_context":{"text":"Raspberry Pi Zero","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=86"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/05\/multi-touch-skin-3.jpg?fit=852%2C478&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/05\/multi-touch-skin-3.jpg?fit=852%2C478&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/05\/multi-touch-skin-3.jpg?fit=852%2C478&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/05\/multi-touch-skin-3.jpg?fit=852%2C478&ssl=1&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6524","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6524"}],"version-history":[{"count":0,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6524\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}