{"id":117372,"date":"2025-03-10T12:32:36","date_gmt":"2025-03-10T16:32:36","guid":{"rendered":"http:\/\/johncohn.org\/base\/?p=117372"},"modified":"2025-03-15T12:38:19","modified_gmt":"2025-03-15T16:38:19","slug":"monday-night-pcbs","status":"publish","type":"post","link":"http:\/\/johncohn.org\/base\/2025\/03\/10\/monday-night-pcbs\/","title":{"rendered":"Monday night – PCB’s !"},"content":{"rendered":"\n

Diane and I took a short run this morning around this super beautiful\u00a0 \u00a0community. We got a chance to say hi to our hosts Roger and Kari and their very cute labradoodle Posie. THey are reall great hosts and great people..\u00a0<\/p>\n\n\n\n

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We got to the school, Canyon Crest Academy around 11 to set up.<\/p>\n\n\n\n

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THey have a pretty strict no pictures without permission policy in there .. so I dont have many pictures from our 3 hour and a half classes. .. Our host this year was Dvora.. we met her last year when we were doing this same class.. for the first time .. with her predecessor Tony.\u00a0

THis class and last years are made possible by the very generous support of the IEEE Solid State Circuits Society. Huge thanks to them for all the suppoprt and encouragment.\u00a0

The idea is to get a whole class of kids to make their own Printed Circuit Board (PCB) as part of Project OnBoard<\/a>
a program I started with my friend Zach\u00a0 at Hackclub.org and several of our friends.\u00a0 \u00a0When Diane and I were here last year, we were workign with High School Senior and Hackclub member Angelina T.\u00a0 At that point we’d had only about 100 students build a PCB.. by the time we got there this week we’d had 852 high school students worldwide build a pcb !

Nearly all of those were students who found us through other Hackclub activities, Instagram posts, etc.. most did their designs on their opwn wiht help from their online hackclub peers.\u00a0

In class workshops like the one diane and I are running this week are rare.. I’d like to make them less rare.. in order to give even more kids the experience of building a PCB. Its a great maker skill to have just like 3d printing, coding, etc.\u00a0

Our goal in the next 3 days was to help all 26 of the students in Dvora’s class build their own customized version of a simple LED sequencer like\u00a0 this\u00a0


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its a very simple design.. it uses a 555 time and a cd4017 decade counter to sequence soem LEDs. here’s the schematic..

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The funny thing is. this is a very old circuit.. first time I remember making one was in 1977..\u00a0 \u00a0I had the leds woven into my hair so I had a halo of sequencing red lights around my head. .. .. not something that people were used to seeign in 1977.. or thats what the huntsvill texas\u00a0 sheriff who pulled me over for making an illegal left turn\u00a0 told me . I still remember seeing my lights sequencing in his mirrored sunglasses \ud83d\ude42\u00a0

Anyway.. last year, this class had lots of fun with the circuit and made soem pretty amazing personalized versions. Here’s what they built.. and after some\u00a0 debug.. they all worked !<\/p>\n\n\n\n

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THis week.. I’m teaching the class by myself. DIane is helping with triage.. as are two students , The and Matthew who volunteered to go through the slides and learn the stuff a little earlier than their classmates.\u00a0

Here are the slides<\/a> I developed based on the ones that Angelina created for the class last year.,. Its my hope to refine these so we can teach these kind of workshops even more easily..\u00a0 (Comments welcome !)\u00a0\u00a0<\/p>\n\n\n\n

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Its my hope that slides liek thiese could be used by IEEE members around the world to teach their own workshops with students.\u00a0<\/p>\n\n\n\n

So.. today;s goal was to explain the concept of PCB’s, get everyone set up with the tools and get everyoen started on their schematics.. All in all, that went very smoothly. Dvora’s class were very quick studys and by the end of the class, most had their schematics completed.. and some were even on to the PCB creation.\u00a0

Best of all.. it seemed liek they were having fun..

Again.. sorry I dont have many pictures.. its a school policy I was tryign to follow \ud83d\ude42 Here are some without people’s faces\u00a0 in them . Dvora showed us all the electronics resources this class has.. tons of stuff.\u00a0

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fter the class, diane and I heade back to the Airbnb , grabbed a quick lunch,\u00a0 changed clothes and headed out for a hike. We chose a trail that followed a lagoon from from pretty far inland out to near the ocean. It was a very easy path.. .. the only catch was that the closer we got to the ocean, the coloser we got to the freeway and its noise. We pretended that what we were hearign was crashing waves \ud83d\ude42


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The great surprise was, that once we crossed under the freeway, there was a beautiful trail up to a narrow slot cannon called annies canyon trail. It was an amazing peice of geology. a very narrow and steep canyon.. soemtimes just one person wide.. travelled up to a great view on the top. Its hard to describe how cool the climb was.. imagine climing a steep hil with vertical sandstone\u00a0 clifffs on both sides of your bodies.. Evidently the cliffs had proven to be a popular grafiti spot.. as much as it was sad to see them defaced, they had their own petrographic beauty<\/p>\n\n\n\n

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we didnt write this.. but it was fun to find<\/p>\n\n\n\n

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From there we walked back the 2.5 miles to the car.. saw some nice birds on the way<\/p>\n\n\n\n

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We got back to the car and changed in the car as discreetly as we could and drove down to La Jolla. Our idea was to find someplace to eat along the beach.\u2026 As as often the case in California\u2026 Traffic was pretty bad and it took us a lot longer to get down there than we thought. Cool thing is we got to see a lot of th biomedical industry that is around the university. This would be one of the places that could possibly work. I can see him alternating between surfing and snowboarding.<\/p>\n

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We found a really nice sushi place with tables along the water.\u2026 The food was amazing.!<\/p>\n\n\n\n

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After that wonderful dinner..w e still had a 30 minute drvive hoime.. We were pretty tired by the time we got home..

long busy day !

nite all, nite sam
_me<\/p>\n","protected":false},"excerpt":{"rendered":"

Diane and I took a short run this morning around this super beautiful\u00a0 \u00a0community. We got a chance to say hi to our hosts Roger and Kari and their very cute labradoodle Posie. THey are reall great hosts and great people..\u00a0 We got to the school, Canyon Crest Academy around 11 to set up. THey … Continue reading Monday night – PCB’s !<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-117372","post","type-post","status-publish","format-standard","hentry"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/posts\/117372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/comments?post=117372"}],"version-history":[{"count":4,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/posts\/117372\/revisions"}],"predecessor-version":[{"id":117426,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/posts\/117372\/revisions\/117426"}],"wp:attachment":[{"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/media?parent=117372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/categories?post=117372"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/tags?post=117372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}