{"id":4008,"date":"2018-12-31T10:14:01","date_gmt":"2018-12-31T13:14:01","guid":{"rendered":"https:\/\/tangopardo.com.ar\/2cf7\/?p=4008"},"modified":"2018-12-31T21:24:58","modified_gmt":"2019-01-01T00:24:58","slug":"dtmf-remote-control-and-sequencer","status":"publish","type":"post","link":"https:\/\/tangopardo.com.ar\/2cf7\/2018\/12\/31\/dtmf-remote-control-and-sequencer","title":{"rendered":"DTMF Remote control and sequencer"},"content":{"rendered":"\n

Many years ago I built a remote control for our transmitter<\/a>. It was pretty simple, just a dtmf decoder rescued from an old answering machine.<\/p>\n\n\n\n

It served us well for a long time, however it was lost<\/em> when we moved to a new location.<\/p>\n\n\n\n

For the last couple of weeks I spent a while polishing the firmware and making new boards in KiCad<\/a>. The original was very crude, just a simple on\/off panel and delayed power sequence.<\/p>\n\n\n\n

This one adds an RF sense and automatic restart, so if one of our amplifiers bails out on a power dropout we don’t have to do anything about it.<\/p>\n\n\n\n

Yesterday I etched the boards. I ran out of toner and had to ask a friend to print the transfers. They came horrible but work fine nevertheless.<\/p>\n\n\n\n

It’s amazing that nowadays buying an arduino and a preassembled dtmf decoder is cheaper than the single chips (and not counting the time to layout a more complex board).<\/p>\n\n\n\n

All the design files are here: https:\/\/github.com\/fm-futura\/dtmf-remote-sequencer<\/a><\/p>\n\n\n\n

\"\"<\/a>
DTMF remote<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Many years ago I built a remote control for our transmitter. It was pretty simple, just a dtmf decoder rescued from an old answering machine. It served us well for a long time, however it was lost when we moved to a new location. For the last couple of weeks I spent a while polishing […]<\/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":[13,33,24],"tags":[],"class_list":["post-4008","post","type-post","status-publish","format-standard","hentry","category-electronica","category-futura","category-hacks"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pmnbC-12E","_links":{"self":[{"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/posts\/4008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/comments?post=4008"}],"version-history":[{"count":5,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/posts\/4008\/revisions"}],"predecessor-version":[{"id":4014,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/posts\/4008\/revisions\/4014"}],"wp:attachment":[{"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/media?parent=4008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/categories?post=4008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/tags?post=4008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}