{"id":1229,"date":"2014-08-15T03:42:47","date_gmt":"2014-08-15T03:42:47","guid":{"rendered":"http:\/\/41j.com\/blog\/?p=1229"},"modified":"2014-08-24T03:15:51","modified_gmt":"2014-08-24T03:15:51","slug":"a-bare-rt3050-pcb","status":"publish","type":"post","link":"https:\/\/41j.com\/blog\/2014\/08\/a-bare-rt3050-pcb\/","title":{"rendered":"A RT3050 PCB"},"content":{"rendered":"

\"rt3050board\"<\/a><\/p>\n

So I removed the components with a hot air rework tool, and once that was done I stuck the board in a scanner. It was still a little hard to see the traces under the silkscreen and mask so I sanded most of it off.<\/p>\n

Here’s the board with most of the silkscreen and mask sanded off.
\n\"sand1\"<\/a><\/p>\n

And with most of it still intact:<\/p>\n

\"scratched1\"<\/a><\/p>\n

\"front\"<\/a><\/p>\n

The backside image has been flipped horizontally so the images can be overlaid.<\/p>\n

\"back\"<\/a><\/p>\n

This SVG contains the layers aligned, and a bunch of the traces mapped out\/annotated:<\/p>\n

\"rt3050p\"<\/a><\/p>\n

RT3050.svg<\/a><\/p>\n

I’ve also been putting a kicad design together based on this chip, you can find the files here:<\/p>\n

\"rt3050layout\"<\/a><\/p>\n

rt3050.tar<\/a><\/p>\n

A few other random images of the original PCB:<\/p>\n

\"RT3050_CPU\"<\/a><\/p>\n

\"rt3050xl\"<\/a><\/p>\n

Useful datasheets:<\/p>\n

150-30732-EN29LV320<\/a><\/p>\n

RT3050_5x_V2.0_081408_0902<\/a><\/p>\n

I couldn’t find a datasheet for the Zentel A3V28S40ETP-G6 on this board, however it seems to be similar to the M12L128168A:<\/p>\n

M12L128168A<\/a><\/p>\n

The crystal on this board seems to be a SMD3225 layout, I guess similar to this part:<\/p>\n

smd3225<\/a><\/p>\n

AIC809-29PU, RA29P:<\/p>\n

RA29P<\/a><\/p>\n

EH11A – AZ1117 (LM1117?)<\/p>\n

DSA00153748<\/a><\/p>\n

HuanLin480ApplicationNote<\/a><\/p>\n

SIGe 2597L (Skyworks, 2.4GHz amp):<\/p>\n

\"SIGe2597L\"<\/a><\/p>\n

SIGe2597L<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

So I removed the components with a hot air rework tool, and once that was done I stuck the board in a scanner. It was still a little hard to see the traces under the silkscreen and mask so I sanded most of it off. Here’s the board with most of the silkscreen and mask […]<\/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":[1],"tags":[],"class_list":["post-1229","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-jP","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=1229"}],"version-history":[{"count":17,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1229\/revisions"}],"predecessor-version":[{"id":1303,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1229\/revisions\/1303"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=1229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=1229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=1229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}