{"id":1790,"date":"2026-02-05T16:08:43","date_gmt":"2026-02-05T07:08:43","guid":{"rendered":"https:\/\/www.eqboard.com\/?p=1790"},"modified":"2026-02-05T16:13:01","modified_gmt":"2026-02-05T07:13:01","slug":"eqboard-iic-%eb%a7%8c%eb%93%9c%eb%8a%94-%ea%b3%bc%ec%a0%95-%ec%9d%b4%ec%95%bc%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/www.eqboard.com\/?p=1790","title":{"rendered":"EQBoard-IIC \ub9cc\ub4dc\ub294 \uacfc\uc815 \uc774\uc57c\uae30"},"content":{"rendered":"\n

\uc774\uc804 \uae00<\/a>\uc5d0\uc11c \ub3d9\uc791\uc5d0 \uc804\ubc18\uc801\uc778 \ub0b4\uc6a9\uc744 \uc801\uc5c8\uc2b5\ub2c8\ub2e4.
\uc774 \uae00\uc5d0\uc11c\ub294 \ub9cc\ub4dc\ub294 \uacfc\uc815\uc5d0 \ub300\ud55c \ub0b4\uc6a9\uc744 \uc801\uc5b4 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc6b0\uc120 M5Stack(ESP32)\ub098 Heltec LoRa V3(ESP32S3) \uacc4\uc5f4\uc758 \ubcf4\ub4dc\ub97c \ud558\ub098\uac00 \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4.
(2\uc81c\ud488\uc740 LCD\uac00 \uc788\uc9c0\ub9cc \uac00\uc9c0\uace0 \uc788\ub294 \ubcf4\ub4dc\uac00 \uc5c6\uc5b4\ub3c4 \ub3d9\uc791\uc740 \ud569\ub2c8\ub2e4.)
M5Stack\ub294 \uc67c\ucabd\uba74\uc5d0 GROVE\ub2e8\uc790\uac00 \uc788\uc2b5\ub2c8\ub2e4.
USB-C\ub2e8\uc790 \ucabd\uc5d0\uc11c\ubd80\ud130 SCL, SDA, 5V, GND\ub85c \ubc30\uc5f4\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.
\"\"
HY2.0-4P connector\ub97c \ub9cc\ub4e4 \uc218 \uc788\uc9c0\ub9cc, Aliexpress\uc5d0\uc11c ‘M5Stack \uacf5\uc2dd Grove2Dupont \ubcc0\ud658 \ucf00\uc774\ube14 20cm(5\uc30d)<\/strong>“\ub97c \uad6c\ub9e4\ud558\uc168\ub3c4 \ub429\ub2c8\ub2e4.
‘Grove cable<\/strong>‘\uacfc ‘QT turn male 150MM<\/strong>‘ \uc5f0\uacb0\ud558\uc5ec \ud558\ub098\ub85c \ub9cc\ub4ed\ub2c8\ub2e4.
\"\"
\uad6c\ub9e4\ud55c QWIIC \uc13c\uc11c \ubaa8\ub4c8\uc744 \ubc14\ub85c \uc5f0\uacb0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\ud558\uc9c0\ub9cc, \ubaa8\ub4e0 \uc13c\uc11c\uac00 QWIIC\ub2e8\uc790\ub97c \uac00\uc9c0\uace0 \uc788\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.
\"\"
\uc774\uc640 \uac19\uc740 \ud615\ud0dc\ub85c \uc13c\uc11c \ubaa8\ub4c8\uc744 \uc5f0\uacb0\ud560 \uacbd\uc6b0, Daisy chain\uc73c\ub85c \uad6c\uc131\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.
\uc5ec\uae30\uc11c \uba87\uac00\uc9c0 \uc5f0\uacb0\ud558\ub294 \ud615\ud0dc\ub97c \ubcf4\uc5ec \ub4dc\ub9ac\uaca0\uc2b5\ub2c8\ub2e4.
\"\" \"\"
\uc67c\ucabd Adapter\ubaa8\ub4c8\uc744 Aliexpress\uc5d0\uc11c \uad6c\ub9e4\ud558\uc5ec Grove\uc5f0\uacb0\ud558\uba74, 2\uac1c\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4..
\"\"
\ub9ce\uc740 \uc13c\uc11c \ubaa8\ub4c8\uc744 \uc5f0\uacb0\ud560 \uacbd\uc6b0\uac00 \uc788\uc2b5\ub2c8\ub2e4.
\"\"
Adapter\ubaa8\ub4c8\uc744 \ud540 \ubc30\uc5f4\uccb4 \ub9de\ucd94\uac70 \ubd99\uc774\uba74, 3\uac1c\uae4c\uc9c0 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ubaa8\ub4c8\uc774 \ub429\ub2c8\ub2e4.
\ubb3c\ub860 \uc774 Adapter\uc5d0 \uc13c\uc11c\uc758 i2c \ub77c\uc778\uc744 \uc9c1\uc811 \ub55c\uc744 \ud558\uc5ec \uc0ac\uc6a9\ud558\uba74, Daisy chain\uc744 \uc0ac\uc6a9\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc774\uc81c \ub0a8\uc740 \uac83\uc740 \uc804\uc6d0\uc785\ub2c8\ub2e4.
M5Stack\uc774 3.7V\ub97c 5V\ub85c \ubcc0\ud658\ud558\uc5ec \ub0b4 \ubcf4\ub0b4\ub294 \uc804\ub958\ub7c9\uc774 \uc801\uc5b4 \ubb38\uc81c\uac00 \ub420 \uc218 \uc788\uace0, 3.3V\ub85c\ub9cc \ub3d9\uc791\ud558\ub294 \uc13c\uc11c\uac00 \uc788\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
(\ubb3c\ub860 5V\ub85c\ub9cc \ub3d9\uc791\ud558\ub294 \ubaa8\ub4c8\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.)
‘ ISO1540<\/strong>‘\ub97c \uc774\uc6a9\ud55c \uc808\uc5f0 \ud615\ud0dc\uc758 Converter\uac00 \uc788\uc2b5\ub2c8\ub2e4.
\"\"
\uc5ec\uae30\uc5d0 3.3V LDO\ub97c \uc5f0\uacb0\ud558\uc5ec 5V\uc640 3.3V \ub610\ub294 \ub0b4\ubd80 \uc804\uc6d0\uc744 \uc0ac\uc6a9\ud55c \uac83\uacfc \uc678\ubd80 \uc804\uc6d0\uc744 \uc0ac\uc6a9\ud558\ub294 \ud615\ud0dc\ub85c \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
(\ub2e8\uc810\uc740 \uc13c\uc11c\uac00 \ubd84\ub9ac\ub418\uc5b4\ub3c4 \uac10\uc9c0\ub97c \uc798 \ubabb \ud558\ub294 \ubb38\uc81c\uac00 \uc788\uc2b5\ub2c8\ub2e4.)
** 5V\uc640 3.3V\ub97c \ud63c\uc6a9\ud560 \uacbd\uc6b0, i2c\ud1b5\uc2e0\uc774 \uc81c\ub300\ub85c \ub418\uc9c0 \uc54a\uc744 \uacbd\uc6b0\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

M5Stack\uc778 \uacbd\uc6b0, \ub4a4\uba74\uc758 \uc13c\uc11c \ub36e\uac8c(\uc67c\ucabd CORE2\ub77c\uace0 \uc801\ud78c \ubd80\ubd84)\ub97c \uc81c\uac70\ud560 \uacbd\uc6b0\ub294 \ub2e4\ub978 \uc5f0\uacb0\ubc29\ubc95\uc774 \uc788\uc2b5\ub2c8\ub2e4.
\"\"
\uc5ec\uae30\uc5d0 3.3V, 5V \ucd9c\ub825 \ub2e8\uc790\uac00 \uc788\uace0, PA_SDA(G32), PA_SCL(G33)\uc774 \uc88c\uce21\uc5d0 \uc788\ub294 I2C\ub2e8\uc790\uc640 \uc5f0\uacb0\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.
\uc774 \ubd80\ubd84\uc744 \uc774\uc6a9\ud558\ub294 \ubc29\ubc95\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.
G13(RXD2)\ub294 \uba3c\uc9c0\uc13c\uc11c\uc640 \uac19\uc774 UART \ucd9c\ub825\uc744 \uac16\ub294 \uc13c\uc11c\ub97c \uc5f0\uacb0\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

pH\uc13c\uc11c\ub97c \ub9cc\ub4dc\ub294 \ubc29\ubc95\uc5d0 \ub300\ud558\uc5ec \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4.
pH\uc13c\uc11c \ubaa8\ub4c8\uc740 \ub300\ubd80\ubd84\uc774 \uc804\uc555 \ucd9c\ub825(V-OUT)\ub9cc \uc788\uc2b5\ub2c8\ub2e4.
\uc774\ub97c ‘ADS1115<\/strong>‘\uc5d0 \uc5f0\uacb0\ud558\uc5ec \uc77c\uccb4\ud615\uc73c\ub85c \ub9cc\ub4ed\ub2c8\ub2e4.
\"\"
VCC, GND, AIN0\uc744 \uc5f0\uacb0\ud558\uc2dc\uba74 \ub429\ub2c8\ub2e4.
\ub3d9\uc791\uc744 5V\uc5d0\uc11c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n

\ub05d\uc73c\uba74 \ud38c\uc6e8\uc5b4 \ub2e4\uc6b4\ub85c\ub4dc \uba85\ub839\uc5b4\uc5d0 \ub300\ud558\uc5ec \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4.
ESP32\ub294 ESPtool_py\uac00 \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4.
\uc774 \ud30c\uc77c\uc740 VSCode package\uc5d0\uc11c \uac00\uc838\uc62c \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\uacf5\ud1b5\uc801\uc73c\ub85c \uc0ac\uc6a9\ud558\ub294 \ubd80\ud305\ub85c\ub354 \uc774\ubbf8\uc9c0 ‘boot_app0.bin’\ub85c \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4.
cmd\ucc3d\uc5d0\uc11c ‘esptool.exe –chip esp32 –port COM6 –baud 921600 –before default_reset –after hard_reset write_flash -z –flash_mode dio –flash_freq 80m –flash_size 16MB 0x1000 bootloader.bin 0x8000 partitions.bin 0xe000 ….\\esptool_py\\boot_app0.bin 0x10000 firmware.bin’ \uc774\ub7f0 \uc2dd\uc73c\ub85c \uba85\ub839\uc5b4\ub97c \uc785\ub825\ud558\uba74 \ub2e4\uc6b4\ub85c\ub4dc\uac00 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\uac04\ub2e8\ud558\uac8c \uc9d1\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 Data-logger(MBL)\ub97c \ub9cc\ub4e4\uc5b4 \ubcf4\uc138\uc694.<\/p>\n\n\n\n

[2025-09-25 \ucd94\uac00]
– Data-logger \uc911\uc5d0 \uc774 \ubc29\uc2dd, \uc989 \ub370\uc774\ud130 \uc218\uc9d1\uacfc \uc804\uc1a1\uc774 \ubd84\ub9ac\ub418\ub294 \ubc29\uc2dd(Indicator type)\uacfc \uc218\uc9d1\ud558\uace0 \uc804\uc1a1\ud558\ub294 \ubc29\uc2dd(Real-time type)\uc744 \uad6c\ubd84\ud558\ub294 \ubc29\ubc95\uc744 \uc18c\uac1c\ud569\ub2c8\ub2e4.
\uc13c\uc11c\ub97c \ubd84\ud574\ud558\uc5ec \ubcf4\ub294 \uac83\uc774 \uc81c\uc77c \uc815\ud655\ud569\ub2c8\ub2e4.
\ub610 \ub2e4\ub978 \ubc29\ubc95\uc73c\ub85c, \ub370\uc774\ud130 \uc218\uc9d1 \uc8fc\uae30(Interval)\ub97c 0.05\ucd08\ub85c \ud558\uace0, \ub370\uc774\ud130\ub97c \uc218\uc9d1\ud558\uba74, 0.4\uc815\ub3c4 \uc77c\uc815\ud55c \uac12\uc774 \ub098\uc628\ub2e4\uba74, Indicator type\uc778 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.
\uc774\ub294, 12-bit ADC \ub3d9\uc791 \ud2b9\uc131\uc0c1 \uc77c\uc815\ud55c \uac12\uc774 \ub098\uc62c \uac00\ub2a5\uc131\uc774 \uc801\uae30\ub54c\ubb38\uc785\ub2c8\ub2e4.
(10-bit\uc5d0\uc11c\ub294 \uac04\ud639 \uc788\uc2b5\ub2c8\ub2e4.)
\uc774\ub7f0 \uc774\uc720\ub85c Over-sampling\uc640 \uac19\uc740 \ud544\ud130\ub97c \uc0ac\uc6a9\ud558\uc9c0\ub9cc, \uc624\ucc28\ub294 \ub098\uc635\ub2c8\ub2e4.
– UART(\uba3c\uc9c0)\uc13c\uc11c \ucc98\ub7fc I2C\uac00 \uc544\ub2cc \ub2e4\ub978 \ud615\ud0dc\uc758 \uc13c\uc11c(Motion, Photo-gate…)\ub97c \ucd94\uac00\ud560 \uc218 \uc788\ub294\uc9c0\uc694?
YES, \ucd94\uac00 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

[2026-02-04 \ucd94\uac00]
\uc65c! I2C Motion sensor\ub97c \uc5c6\ub294 \uac83\uc778\uac00?<\/strong>
\uc544\ub2c8\uc694 \uc788\uc2b5\ub2c8\ub2e4.
\"\"
\ub450 \uc81c\ud488\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\uc624\ub978\ucabd\uc5d0 \uc788\ub294, M5Stack\uc0ac\uc758 ‘Unit Ultrasonic-I2C’\ub77c\ub294 \uc81c\ud488\uc740 \ubbfc\uac10\ud558\uac8c \ub3d9\uc791\ud569\ub2c8\ub2e4.
\ub9cc\uc57d! HC-SR04\ub3c4 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\"\"
\ubcf4\ub4dc \ud6c4\uba74\uc5d0 \ubcf4\uc2dc\uba74 M1, M2 \ub610\ub294 R4, R5 \ub77c\ub294 Short pad\uac00 \uc788\uc2b5\ub2c8\ub2e4.
\ub300\ubd80\ubd84 M1(R4)\ub97c Short \uc2dc\ud0a4\uba74 I2C\ub85c \ub3d9\uc791\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\ud14c\uc2a4\ud2b8 \ud55c \uc804 \ubcf4\ub4dc\uc758 \uc2e4\ud589 \ud30c\uc77c
http:\/\/eqboard.com\/wp-content\/uploads\/2025\/09\/EQBoardIIC2.zip<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\uc774\uc804 \uae00\uc5d0\uc11c \ub3d9\uc791\uc5d0 \uc804\ubc18\uc801\uc778 \ub0b4\uc6a9\uc744 \uc801\uc5c8\uc2b5\ub2c8\ub2e4.\uc774 \uae00\uc5d0\uc11c\ub294 \ub9cc\ub4dc\ub294 \uacfc\uc815\uc5d0 \ub300\ud55c \ub0b4\uc6a9\uc744 \uc801\uc5b4 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc6b0\uc120 M5Stack(ESP32)\ub098 Heltec LoRa V3(ESP32S3) \uacc4\uc5f4\uc758 \ubcf4\ub4dc\ub97c \ud558\ub098\uac00 \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4.(2\uc81c\ud488\uc740 LCD\uac00 \uc788\uc9c0\ub9cc \uac00\uc9c0\uace0 \uc788\ub294 \ubcf4\ub4dc\uac00 \uc5c6\uc5b4\ub3c4 \ub3d9\uc791\uc740 \ud569\ub2c8\ub2e4.)M5Stack\ub294 \uc67c\ucabd\uba74\uc5d0 GROVE\ub2e8\uc790\uac00 \uc788\uc2b5\ub2c8\ub2e4.USB-C\ub2e8\uc790 \ucabd\uc5d0\uc11c\ubd80\ud130 SCL, SDA, 5V, GND\ub85c \ubc30\uc5f4\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.HY2.0-4P connector\ub97c \ub9cc\ub4e4 \uc218 \uc788\uc9c0\ub9cc, Aliexpress\uc5d0\uc11c ‘M5Stack \uacf5\uc2dd Grove2Dupont \ubcc0\ud658 \ucf00\uc774\ube14 20cm(5\uc30d)“\ub97c \uad6c\ub9e4\ud558\uc168\ub3c4 \ub429\ub2c8\ub2e4.‘Grove cable‘\uacfc […]<\/p>\n","protected":false},"author":1,"featured_media":1896,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,31,11],"tags":[17,8,36],"class_list":["post-1790","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-datalogger","category-steamp","category-story","tag-data-logger","tag-mbl","tag-qwiic"],"_links":{"self":[{"href":"https:\/\/www.eqboard.com\/index.php?rest_route=\/wp\/v2\/posts\/1790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.eqboard.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.eqboard.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.eqboard.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eqboard.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1790"}],"version-history":[{"count":6,"href":"https:\/\/www.eqboard.com\/index.php?rest_route=\/wp\/v2\/posts\/1790\/revisions"}],"predecessor-version":[{"id":1948,"href":"https:\/\/www.eqboard.com\/index.php?rest_route=\/wp\/v2\/posts\/1790\/revisions\/1948"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.eqboard.com\/index.php?rest_route=\/wp\/v2\/media\/1896"}],"wp:attachment":[{"href":"https:\/\/www.eqboard.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1790"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eqboard.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1790"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eqboard.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}