{"id":727,"date":"2010-11-21T16:04:21","date_gmt":"2010-11-21T09:04:21","guid":{"rendered":"http:\/\/www.payitforward.edu.vn\/wordpress\/?page_id=727"},"modified":"2011-04-18T10:29:05","modified_gmt":"2011-04-18T03:29:05","slug":"goi-y-chon-footprint","status":"publish","type":"page","link":"https:\/\/payitforward.edu.vn\/wordpress\/contests\/led-design-contest\/sensors-leds-2010\/goi-y-chon-footprint\/","title":{"rendered":"G\u1ee3i \u00fd ch\u1ecdn footprint"},"content":{"rendered":"
[…Xem c\u00e1c link li\u00ean quan t\u1edbi cu\u1ed9c thi…]<\/span><\/a><\/em><\/h6>\n

Nh\u1eb1m gi\u00fap c\u00e1c b\u1ea1n l\u1ef1a ch\u1ecdn footprint linh ki\u1ec7n \u0111\u00fang v\u00e0 nhanh ch\u00f3ng, BTC \u0111\u01b0a ra:<\/p>\n

\u201cG\u1ee3i \u00fd l\u1ef1a ch\u1ecdn footprint v\u1edbi th\u01b0 vi\u1ec7n layout Payitforward.LLB\u201d<\/strong><\/h2>\n

Nguy\u00ean t\u1eafc:<\/strong><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nh\u1eefng footprint sau ch\u1ec9 l\u00e0 g\u1ee3i \u00fd, c\u00e1c b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn footprint ph\u00f9 h\u1ee3p kh\u00e1c.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Th\u01b0 vi\u1ec7n l\u1ea5y l\u00e0m m\u1eabu l\u00e0 th\u01b0 vi\u1ec7n c\u1ee7a CLB \u201cPayitforward.LLB<\/a>\u201d, c\u00e1c b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 ch\u1ecdn th\u01b0 vi\u1ec7n kh\u00e1c.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C\u00e1c footprint ph\u1ea3i \u0111\u1ea3m b\u1ea3o y\u00eau c\u1ea7u v\u1ec1 pad vu\u00f4ng hay tr\u00f2n, \u2026, ph\u1ea3i c\u00f3 ch\u1eef k\u00ed hi\u1ec7u \u1edf l\u1edbp SSTOP (m\u1eb7c \u0111\u1ecbnh l\u00e0 m\u00e0u tr\u1eafng).<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 N\u00ean ch\u1ecdn footprint c\u00f3 Pad linh ki\u1ec7n (pad tr\u00f2n\/vu\u00f4ng\/ch\u1eef nh\u1eadt, \u2026) kh\u00f4ng<\/strong> n\u00ean nh\u1ecf<\/strong> qu\u00e1<\/strong> (n\u00ean >65mils) \u0111\u1ec3 khi khoan kh\u00f4ng l\u00e0m bay m\u1ea5t 1 ph\u1ea7n c\u1ee7a pad, m\u1ed1i h\u00e0n s\u1ebd kh\u00f4ng \u0111\u1eb9p.<\/p>\n

H\u00ecnh d\u1ea1ng m\u1ed9t s\u1ed1 lo\u1ea1i linh ki\u1ec7n trong b\u00e0i thi gi\u1edbi thi\u1ec7u t\u1ea1i \u0111\u00e2y:<\/p>\n

http:\/\/www.payitforward.edu.vn\/wordpress\/fan-led-contest\/ho-tro\/gioi-thieu-linh-kien\/<\/a><\/p>\n

1. <\/strong>Linh ki\u1ec7n \u0111i\u1ec7n tr\u1edf:<\/strong><\/p>\n

T\u1ea5t c\u1ea3 \u0111i\u1ec7n tr\u1edf s\u1eed d\u1ee5ng trong b\u00e0i thi l\u00e0 lo\u1ea1i 1\/4W th\u00f4ng th\u01b0\u1eddng.<\/p>\n

\u0110i\u1ec7n tr\u1edf c\u1ea7n 2 ch\u00e2n h\u00e0n v\u00e0o board, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn b\u1ea5t k\u00ec footprint n\u00e0o c\u00f3 2 ch\u00e2n cho n\u00f3, l\u01b0u \u00fd kho\u1ea3ng c\u00e1ch \u0111\u1ee7 r\u1ed9ng \u0111\u1ec3 d\u1ec5 h\u00e0n.<\/p>\n

G\u1ee3i \u00fd: RESISTOR 1\/4W<\/span><\/p>\n

2. <\/strong>T\u1ee5 Pi (T\u1ee5 g\u1ed1m)<\/strong><\/p>\n

T\u1ee5 kh\u00f4ng ph\u00e2n c\u1ef1c.<\/p>\n

T\u1ee5 pi trong b\u00e0i c\u00f3 c\u00e1c gi\u00e1 tr\u1ecb l\u00e0 22p (picoFara), 47p, 104 (hay 100nF, 0.1uF).<\/p>\n

T\u1ee5 pi n\u00ean ch\u1ecdn footprint nh\u1ecf, v\u00ec lo\u1ea1i t\u1ee5 n\u00e0y b\u00e9, kho\u1ea3ng c\u00e1ch gi\u1eefa 2 ch\u00e2n nh\u1ecf, ch\u1ec9 v\u00e0o kho\u1ea3ng 0.1inch.<\/p>\n

G\u1ee3i \u00fd: TU PI<\/span><\/p>\n

Tuy nhi\u00ean c\u00e1c pad c\u1ee7a footprint TU PI trong th\u01b0 vi\u1ec7n h\u01a1i nh\u1ecf (60mils) s\u1ebd g\u00e2y kh\u00f3 kh\u0103n khi khoan, c\u00e1c b\u1ea1n n\u00ean ch\u1ec9nh pad n\u00e0y cho to h\u01a1n (kho\u1ea3ng 70mils) \u0111\u1ec3 khoan kh\u00f4ng b\u1ecb bay pad \u0111\u1ed3ng.<\/p>\n

3. <\/strong>T\u1ee5 ho\u00e1:<\/strong><\/p>\n

T\u1ee5 ho\u00e1 c\u00f3 c\u00e1c gi\u00e1 tr\u1ecb l\u00e0: 1000uF\/ M\u1ee9c \u0111i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng th\u1ea5p nh\u1ea5t l\u00e0 25V<\/p>\n

100uF \/ M\u1ee9c \u0111i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng th\u1ea5p nh\u1ea5t l\u00e0 6.3V<\/p>\n

T\u1ee5 ho\u00e1 l\u00e0 t\u1ee5 ph\u00e2n c\u1ef1c do \u0111\u00f3 y\u00eau c\u1ea7u pad d\u01b0\u01a1ng ph\u1ea3i c\u00f3 h\u00ecnh vu\u00f4ng \/ ch\u1eef nh\u1eadt (\u0111\u1ec3 ph\u00e2n bi\u1ec7t v\u1edbi pad \u00e2m)<\/p>\n

Footprint g\u1ee3i \u00fd: C\u00e1c footprint T\u1ee5 ph\u00e2n c\u1ef1c c\u00f3 trong th\u01b0 vi\u1ec7n, l\u01b0u \u00fd k\u00edch th\u01b0\u1edbc t\u1ee5. N\u00ean mua t\u1ee5 v\u1ec1 tr\u01b0\u1edbc \u0111\u1ec3 xem k\u00edch th\u01b0\u1edbc cho ph\u00f9 h\u1ee3p. N\u1ebfu kh\u00f4ng c\u00f3 k\u00edch th\u01b0\u1edbc n\u00e0o ph\u00f9 h\u1ee3p c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9nh l\u1ea1i th\u01b0 vi\u1ec7n.<\/p>\n

4. <\/strong>C\u1ea7u diode 1A: BRIDGE<\/strong><\/p>\n

Footprint \u0111\u1ec1 ngh\u1ecb: DIODE CAU TRON<\/span><\/p>\n

L\u01b0u \u00fd ch\u00e2n s\u1ed1 4 l\u00e0 +DC (h\u00ecnh vu\u00f4ng), ch\u00e2n s\u1ed1 2 l\u00e0 GND, 2 ch\u00e2n c\u00f2n l\u1ea1i l\u00e0 AC.<\/p>\n

5. <\/strong>Header 2, 4, 6, 8:<\/strong><\/p>\n

Header l\u00e0 m\u1ed9t lo\u1ea1i linh ki\u1ec7n k\u1ebft n\u1ed1i (connector), \u1edf ch\u1ee3 Nh\u1eadt t\u1ea3o th\u01b0\u1eddng g\u1ecdi l\u00e0 \u201ch\u00e0ng r\u00e0o\u201d, \u201cx\u01b0\u01a1ng c\u00e1\u201d, \u2026 1 thanh c\u00f3 40 ch\u00e2n. C\u00e1c b\u1ea1n b\u1ebb ra \u0111\u1ec3 c\u00f3 s\u1ed1 ch\u00e2n c\u1ea7n thi\u1ebft.<\/p>\n

L\u01b0u \u00fd r\u1eb1ng, header c\u00f3 c\u00e1c ch\u00e2n c\u00e1ch nhau \u0111\u00fang 0.1inch (2 \u00f4 l\u01b0\u1edbi trong th\u01b0 vi\u1ec7n layout) n\u00ean c\u00e1c b\u1ea1n ph\u1ea3i ch\u1ecdn footprint cho \u0111\u00fang.<\/p>\n

Pad s\u1ed1 1 ph\u1ea3i c\u00f3 h\u00ecnh vu\u00f4ng ho\u1eb7c ch\u1eef nh\u1eadt.<\/p>\n

G\u1ee3i \u00fd: HEADER 2, HEADER 4, \u2026<\/span><\/p>\n


\n<\/span><\/p>\n

6. <\/strong>Header 2×2, Header 5×2:<\/strong><\/p>\n

C\u0169ng l\u00e0 lo\u1ea1i nh\u01b0 m\u1ee5c 5 nh\u01b0ng c\u00f3 80 ch\u00e2n, x\u1ebfp th\u00e0nh 2 h\u00e0ng (c\u00f2n g\u1ecdi l\u00e0 header \u0111\u00f4i, \u201ch\u00e0ng r\u00e0o \u0111\u00f4i\u201d, \u2026)<\/p>\n

Footprint: HEADER 2X2, HEADER 5X2.<\/span><\/p>\n


\n<\/span><\/p>\n

7. <\/strong>PORTA, B, C, D, E:<\/strong><\/p>\n

D\u00f9ng c\u00e1c header c\u00f3 s\u1ed1 ch\u00e2n t\u01b0\u01a1ng \u1ee9ng.<\/p>\n

8.\u00a0\u00a0\u00a0\u00a0\u00a0 Led<\/strong>:<\/p>\n

Led l\u00e0 linh ki\u1ec7n c\u00f3 ph\u00e2n c\u1ef1c do \u0111\u00f3 pad d\u01b0\u01a1ng ph\u1ea3i ch\u1ecdn l\u00e0 h\u00ecnh vu\u00f4ng \/ ch\u1eef nh\u1eadt.<\/p>\n

G\u1ee3i \u00fd: LED 5 LY<\/span><\/p>\n

Footprint n\u00e0y th\u00edch h\u1ee3p cho c\u1ea3 Led 5ly v\u00e0 3ly, tr\u01b0\u1eddng h\u1ee3p d\u00f9ng Led \u0111\u1eb7c bi\u1ec7t kh\u00e1c n\u00ean xem l\u1ea1i k\u00edch th\u01b0\u1edbc.<\/p>\n

9. <\/strong>Pic16F887 (Thay b\u1eb1ng \u0111\u1ebf IC 40 ch\u00e2n)<\/strong><\/p>\n

L\u00e0 IC d\u1ea1ng DIP, c\u00f3 40 ch\u00e2n.<\/p>\n

C\u00e1c footprint ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 l\u00e0:<\/p>\n

+ DIP 40, DIP 40 _OBL<\/span> (th\u01b0 vi\u1ec7n Payitforward)<\/p>\n

+ C\u00e1c footprint c\u00f3 40 ch\u00e2n trong th\u01b0 vi\u1ec7n DIP100T<\/span> c\u00f3 s\u1eb5n c\u1ee7a OrCAD<\/p>\n

10. <\/strong>N\u00fat nh\u1ea5n \u2013 Push Button<\/strong><\/p>\n

Trong b\u00e0i d\u00f9ng c\u00e1c n\u00fat nh\u1ea5n l\u00e0 SW1, SW2, SW_RS.<\/p>\n

\u0110\u00e2y l\u00e0 lo\u1ea1i n\u00fat nh\u1ea5n \u2013 nh\u1ea3 (c\u00f4ng t\u1eafc th\u01b0\u1eddng m\u1edf, khi nh\u1ea5n xu\u1ed1ng th\u00ec n\u1ed1i m\u1ea1ch, khi th\u1ea3 tay ra th\u00ec ng\u1eaft m\u1ea1ch).<\/p>\n

N\u00fat nh\u1ea5n th\u01b0\u1eddng c\u00f3 2 lo\u1ea1i: 2 ch\u00e2n v\u00e0 4 ch\u00e2n (Lo\u1ea1i 4 ch\u00e2n th\u00ec chia th\u00e0nh 2 c\u1eb7p, c\u1ee9 2 ch\u00e2n \u0111\u00e3 \u0111\u01b0\u1ee3c n\u1ed1i s\u1eb5n v\u1edbi nhau). K\u00edch th\u01b0\u1edbc c\u0169ng c\u00f3 nhi\u1ec1u c\u1ee1 l\u1edbn nh\u1ecf kh\u00e1c nhau.<\/p>\n

Trong schematic v\u1ebd lo\u1ea1i 2 ch\u00e2n, lo\u1ea1i nh\u1ecf, footprint c\u00f3 th\u1ec3 l\u00e0: BUTTON SMALL<\/span><\/p>\n

C\u00e1c b\u1ea1n n\u00ean l\u01b0u \u00fd k\u00edch th\u01b0\u1edbc, n\u1ebfu mua lo\u1ea1i n\u00fat nh\u1ea5n l\u1edbn h\u01a1n th\u00ec ch\u1ec9nh l\u1ea1i footprint cho ph\u00f9 h\u1ee3p.<\/p>\n

11. <\/strong>C\u00f4ng t\u1eafc ON-OFF<\/strong><\/p>\n

C\u00f4ng t\u1eafc 2 tr\u1ea1ng th\u00e1i, khi b\u1eadt sang On th\u00ec \u0111\u00f3ng m\u1ea1ch, b\u1eadt sang OFF th\u00ec ng\u1eaft m\u1ea1ch.<\/p>\n

G\u1ee3i \u00fd: SW ON-OFF<\/span><\/p>\n

(D\u00f9ng cho c\u00f4ng t\u1eafc on-off lo\u1ea1i nh\u1ecf, k\u00edch th\u01b0\u1edbc kho\u1ea3ng 1cm x 0.7cm), n\u1ebfu c\u00e1c b\u1ea1n mua c\u00f4ng t\u1eafc l\u1edbn h\u01a1n th\u00ec ph\u1ea3i ch\u1ec9nh l\u1ea1i footprint cho ph\u00f9 h\u1ee3p.<\/p>\n

12. <\/strong>IC ngu\u1ed3n 7805:<\/strong><\/p>\n

Ki\u1ec3u ch\u00e2n chu\u1ea9n l\u00e0 TO220 c\u00f3 th\u1ec3 ch\u1ecdn:<\/p>\n

+ TO220\u00a0 KHONG TAN NHIET, TO220+TAN NHIET<\/span> (th\u01b0 vi\u1ec7n Payitforward.LLB)<\/p>\n

+ C\u00e1c ki\u1ec3u ch\u00e2n TO220 trong th\u01b0 vi\u1ec7n TO c\u00f3 s\u1eb5n c\u1ee7a Layout<\/p>\n

13. <\/strong>Connector c\u1ea5p ngu\u1ed3n 12 VAC:<\/strong><\/p>\n

C\u00f3 th\u1ec3 ch\u1ecdn DOMINO 2<\/span> ho\u1eb7c JACK DC <\/span>tu\u1ef3 theo th\u1ef1c t\u1ebf b\u1ea1n ch\u1ecdn connector n\u00e0o, tham kh\u1ea3o v\u1ec1 connector t\u1ea1i:<\/p>\n

http:\/\/www.payitforward.edu.vn\/wordpress\/tutorials\/for-beginner\/1-bien-ap\/<\/a><\/p>\n

14. <\/strong>Th\u1ea1ch anh (Crystal)<\/strong><\/p>\n

G\u1ee3i \u00fd: CRYSTAL<\/span><\/p>\n

[…Xem c\u00e1c link li\u00ean quan t\u1edbi cu\u1ed9c thi…]<\/em><\/em><\/span><\/a><\/h6>\n","protected":false},"excerpt":{"rendered":"

[…Xem c\u00e1c link li\u00ean quan t\u1edbi cu\u1ed9c thi…] Nh\u1eb1m gi\u00fap c\u00e1c b\u1ea1n l\u1ef1a ch\u1ecdn footprint linh ki\u1ec7n \u0111\u00fang v\u00e0 nhanh ch\u00f3ng, BTC \u0111\u01b0a ra: \u201cG\u1ee3i \u00fd l\u1ef1a ch\u1ecdn footprint v\u1edbi th\u01b0 vi\u1ec7n layout Payitforward.LLB\u201d Nguy\u00ean t\u1eafc: –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nh\u1eefng footprint sau ch\u1ec9 l\u00e0 g\u1ee3i \u00fd, c\u00e1c b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn footprint ph\u00f9 h\u1ee3p kh\u00e1c. –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Th\u01b0 vi\u1ec7n l\u1ea5y l\u00e0m m\u1eabu l\u00e0 th\u01b0 vi\u1ec7n c\u1ee7a CLB \u201cPayitforward.LLB\u201d, c\u00e1c b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 ch\u1ecdn th\u01b0 vi\u1ec7n kh\u00e1c. –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C\u00e1c footprint ph\u1ea3i \u0111\u1ea3m b\u1ea3o y\u00eau c\u1ea7u v\u1ec1 pad vu\u00f4ng hay tr\u00f2n, \u2026, ph\u1ea3i c\u00f3 ch\u1eef k\u00ed hi\u1ec7u \u1edf l\u1edbp SSTOP \u2026<\/p>\n

Continue reading<\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":689,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-727","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages\/727","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/comments?post=727"}],"version-history":[{"count":9,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages\/727\/revisions"}],"predecessor-version":[{"id":732,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages\/727\/revisions\/732"}],"up":[{"embeddable":true,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages\/689"}],"wp:attachment":[{"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/media?parent=727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}