{"id":121,"date":"2021-03-05T14:03:00","date_gmt":"2021-03-05T14:03:00","guid":{"rendered":"http:\/\/meatpie\/?p=121"},"modified":"2021-04-10T18:33:59","modified_gmt":"2021-04-10T18:33:59","slug":"led-mask","status":"publish","type":"post","link":"https:\/\/snersbots.co.uk\/index.php\/led-mask\/","title":{"rendered":"Led Mask"},"content":{"rendered":"\n

I saw a post last year from Tyler Glaiel on Medium, and decided to copy his idea and make a mask. <\/p>\n\n\n\n\n\n\n\n

I made the first one, which was really difficult to solder. I moved on to the second. This was a little tidier, but unfortunately it had issues. I had placed the microphone over the nose. The result was that it only worked when you weren’t wearing it.<\/p>\n\n\n\n

It is a really difficult soldering project, and I lost the confidence to try again. Hence the led tower soldering practice. Now I have no excuse. Going to have another go.<\/p>\n\n\n\n

This is Tyler’s mask in action.<\/a><\/p>\n\n\n\n

So start with an Arduino Nano. This needs to be loaded up with the code. It was originally shared by Tyler, but he has since withdrawn it, so I’m sorry I am not at liberty to share it. <\/p>\n\n\n\n

\"Screen
The Arduino IDE with the sketch ready to upload onto the Nano<\/figcaption><\/figure><\/div>\n\n\n\n
\"Photo
The Nano has an odd shaped USB which has been sitting at the top of the stairs for a month – now I know what it is doing there – code is loaded, and the led lights up, so looks like it worked.<\/figcaption><\/figure><\/div>\n\n\n\n
\"A
I wouldn’t call it a wiring diagram.
However this is a rough sketch of where I want everything to go.<\/figcaption><\/figure><\/div>\n\n\n\n
  • \"\"<\/figure><\/li>
  • \"\"<\/figure><\/li>
  • \"Back<\/figure><\/li><\/ul>
    On my plan I need the centre 5V and GND wires, and the rightmost DIN wire on the back of my 8×8 led matrix. The others can be cut off, we will not be using them.
    And I want the microphone to sit over these wires, so I need to put down some masking tape – a bit thick to ensure nothing nicks and gets exposed.<\/figcaption><\/figure>\n\n\n\n
    <\/div>\n\n\n\n

    I need a 330 \u03a9 resistor between DIN and D6 on the Arduino. I want the Arduino to lie on the opposite end of the led matrix from the DIN connector, so I will try to judge the length right this time.<\/p>\n\n\n\n

    A7 on the Arduino needs to go to ‘OUT’ on the microphone. This is my last microphone – gently with the solder. There are two secrets to a good joint. <\/p>\n\n\n\n

    1. Be patient. Let the iron warm up properly.<\/li>
    2. Don’t try and solder with a blobby tip. I use kitchen roll – doubled over thick so I don’t burn myself. It gently cleans the tip without de-tinning it.<\/li><\/ol>\n\n\n\n

      The joint on the microphone is OK. Not so pleased with D6 – blobby tip – I don’t follow my own advice.<\/p>\n\n\n\n

      Now I just need to solder the black and reds. A lot easier when I plan it up properly.<\/p>\n\n\n\n

      Note to self. You want the incoming to go to Arduino Vin.<\/p>\n\n\n\n

      Use the 5V out from the Arduino to power the microphone.<\/p>\n\n\n\n

      Wire the led direct to the battery. In this way, hopefully the microphone will get a stable power supply and will work reliably. (I might have already blown it).<\/p>\n","protected":false},"excerpt":{"rendered":"

      I saw a post last year from Tyler Glaiel on Medium, and decided to copy his idea and make a mask.<\/p>\n","protected":false},"author":1,"featured_media":387,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,5],"tags":[],"class_list":["post-121","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronics","category-soldering"],"_links":{"self":[{"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/121","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=121"}],"version-history":[{"count":27,"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/121\/revisions"}],"predecessor-version":[{"id":538,"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/121\/revisions\/538"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/media\/387"}],"wp:attachment":[{"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/categories?post=121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/snersbots.co.uk\/index.php\/wp-json\/wp\/v2\/tags?post=121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}