WifiLamp
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| Project WifiLamp | |
|---|---|
| |
| Investigating my Action WiFi enabled LED lamp | |
| Status | Initializing |
| Contact | bertrik |
| Last Update | 2019-11-03 |
Intro
This page is about a WiFi enabled LED lamp from the Action store, with E27 form factor.
I hoped this would be an ESP8266 based lamp, so it can possibly be flashed with my StofAnanas/stoflama firmware so it can indicate local air quality (PM10).
More info:
- https://www.action.com/nl-nl/p/lsc-smart-connect-slimme-multicolor-ledlamp-3/
- https://www.letscontrolit.com/forum/viewtopic.php?t=6955
Hardware info
The lamp communicates over 2.4 GHz WiFi.
It has two setup modes, triggered by switching it off-and-on three times quickly in a row
- fast blink mode: about 1 blink per second
- slow blink mode: about 1 blink per 3 seconds
MAC address:
68:57:2d:1a:6a:ea
https://www.cleancss.com/mac-lookup/68-57-2D
It received ip address 192.168.1.240 through DHCP from an OpenWRT router.
Protocol
I sniffed the protocol using TCP dump.
Changing the state of the lamp by the app causes a message to be sent to (TCP): ec2-3-121-210-75.eu-central-1.compute.amazonaws.com.8886
The local protocol appears to use UDP. There is an UDP broadcast message sent by the lamp of 172 bytes.
Capture
Turn ON
Turn ON the lamp: (captured with tcpdump -i wlan0 src 192.168.1.240 -X)
18:36:41.270980 IP 192.168.1.240.6668 > 192.168.1.178.41290: Flags [.], ack 167, win 2302, length 0
0x0000: 4500 0028 0613 0000 ff06 30ca c0a8 01f0 E..(......0.....
0x0010: c0a8 01b2 1a0c a14a 0001 1775 63d9 ecc7 .......J...uc...
0x0020: 5010 08fe fe75 0000 P....u..
18:36:41.271040 IP 192.168.1.240.6668 > 192.168.1.178.41290: Flags [.], ack 167, win 2302, length 0
0x0000: 4500 0028 0613 0000 ff06 30ca c0a8 01f0 E..(......0.....
0x0010: c0a8 01b2 1a0c a14a 0001 1775 63d9 ecc7 .......J...uc...
0x0020: 5010 08fe fe75 0000 P....u..
18:36:41.868260 IP 192.168.1.240.49153 > ec2-3-121-210-75.eu-central-1.compute.amazonaws.com.8886: Flags [P.], seq 431:612, ack 208, win 1885, length 181
0x0000: 4500 00dd 0614 0000 ff06 1caa c0a8 01f0 E...............
0x0010: 0379 d24b c001 22b6 0000 751c 91ce 80ca .y.K.."...u.....
0x0020: 5018 075d 3ec9 0000 1703 0300 b042 416f P..]>........BAo
0x0030: 6862 6d64 3661 4739 3149 4652 319f bc08 hbmd6aG91IFR1...
0x0040: 51da e246 20e7 5510 90ca f987 d943 c04c Q..F..U......C.L
0x0050: 49ae ae03 9e33 edd8 3d5c 8481 c861 c099 I....3..=\...a..
0x0060: 30d8 e9f1 9488 c3f8 b03e 5ed5 e34e 48d0 0........>^..NH.
0x0070: 170f 5931 1667 a5c7 44a8 dbe0 bec1 5712 ..Y1.g..D.....W.
0x0080: e0e1 21bc 39fc a4e4 6393 439a 4b9a c25e ..!.9...c.C.K..^
0x0090: cfe0 15a9 26fe 71f3 28df fc51 094e e687 ....&.q.(..Q.N..
0x00a0: 2d52 c46d c6cf 808e a387 b1e6 e45e 5cb7 -R.m.........^\.
0x00b0: f6a0 ed58 f2ee 749e 6082 0c9e f2d1 5c8a ...X..t.`.....\.
0x00c0: 2981 2095 62f4 eedf 513a 3a56 4fa3 71ac )...b...Q::VO.q.
0x00d0: 4e7e 9009 39c7 b4c8 1d4e 65ee b9 N~..9....Ne..
18:36:41.870000 IP 192.168.1.240.6668 > 192.168.1.178.41290: Flags [P.], seq 266:357, ack 167, win 2302, length 91
0x0000: 4500 0083 0615 0000 ff06 306d c0a8 01f0 E.........0m....
0x0010: c0a8 01b2 1a0c a14a 0001 1775 63d9 ecc7 .......J...uc...
0x0020: 5018 08fe 42b7 0000 0000 55aa 0000 0000 P...B.....U.....
0x0030: 0000 0008 0000 004b 0000 0000 332e 3300 .......K....3.3.
0x0040: 0000 0000 0000 6300 0000 0132 0d91 0fb0 ......c....2....
0x0050: 41e1 240d c133 b03e c6da 47cc d07d e609 A.$..3.>..G..}..
0x0060: 3e99 2b80 0f93 caf3 0690 ac4f 0c58 6945 >.+........O.XiE
0x0070: 347a 49aa 4b75 0d05 5c3c e1f6 9b92 6e00 4zI.Ku..\<....n.
0x0080: 00aa 55 ..U
18:36:41.870080 IP 192.168.1.240.6668 > 192.168.1.178.41290: Flags [P.], seq 266:357, ack 167, win 2302, length 91
0x0000: 4500 0083 0615 0000 ff06 306d c0a8 01f0 E.........0m....
0x0010: c0a8 01b2 1a0c a14a 0001 1775 63d9 ecc7 .......J...uc...
0x0020: 5018 08fe 42b7 0000 0000 55aa 0000 0000 P...B.....U.....
0x0030: 0000 0008 0000 004b 0000 0000 332e 3300 .......K....3.3.
0x0040: 0000 0000 0000 6300 0000 0132 0d91 0fb0 ......c....2....
0x0050: 41e1 240d c133 b03e c6da 47cc d07d e609 A.$..3.>..G..}..
0x0060: 3e99 2b80 0f93 caf3 0690 ac4f 0c58 6945 >.+........O.XiE
0x0070: 347a 49aa 4b75 0d05 5c3c e1f6 9b92 6e00 4zI.Ku..\<....n.
0x0080: 00aa 55 ..U
18:36:42.213341 IP 192.168.1.240.49153 > ec2-3-121-210-75.eu-central-1.compute.amazonaws.com.8886: Flags [.], ack 277, win 1816, length 0
0x0000: 4500 0028 0616 0000 ff06 1d5d c0a8 01f0 E..(.......]....
0x0010: 0379 d24b c001 22b6 0000 75d1 91ce 810f .y.K.."...u.....
0x0020: 5010 0718 a4f8 0000 P.......
18:36:42.218281 IP 192.168.1.240.6668 > 192.168.1.178.41290: Flags [P.], seq 357:385, ack 167, win 2302, length 28
0x0000: 4500 0044 0617 0000 ff06 30aa c0a8 01f0 E..D......0.....
0x0010: c0a8 01b2 1a0c a14a 0001 17d0 63d9 ecc7 .......J....c...
0x0020: 5018 08fe 01dd 0000 0000 55aa 0000 0053 P.........U....S
0x0030: 0000 000d 0000 000c 0000 0000 59fd a1b0 ............Y...
0x0040: 0000 aa55 ...U
18:36:42.218361 IP 192.168.1.240.6668 > 192.168.1.178.41290: Flags [P.], seq 357:385, ack 167, win 2302, length 28
0x0000: 4500 0044 0617 0000 ff06 30aa c0a8 01f0 E..D......0.....
0x0010: c0a8 01b2 1a0c a14a 0001 17d0 63d9 ecc7 .......J....c...
0x0020: 5018 08fe 01dd 0000 0000 55aa 0000 0053 P.........U....S
0x0030: 0000 000d 0000 000c 0000 0000 59fd a1b0 ............Y...
0x0040: 0000 aa55 ...U
18:36:43.233222 IP 192.168.1.240.49153 > 255.255.255.255.6667: UDP, length 172
0x0000: 4500 00c8 0618 0000 ff11 f274 c0a8 01f0 E..........t....
0x0010: ffff ffff c001 1a0b 00b4 f1e8 0000 55aa ..............U.
0x0020: 0000 0000 0000 0013 0000 009c 0000 0000 ................
0x0030: d097 6667 6f33 69eb 10b5 e9f1 32fd 802a ..fgo3i.....2..*
0x0040: 748d b61a 5e0b 3034 aff7 9af9 cddc f214 t...^.04........
0x0050: 4ef9 12df 8046 2fa3 7469 859b 52d0 97eb N....F/.ti..R...
0x0060: 35d6 9379 4bc7 a48f 53c5 29be 7e05 2782 5..yK...S.).~.'.
0x0070: 7256 f992 ef0b b3c9 946f 6ca8 e2e1 4853 rV.......ol...HS
0x0080: 2e0d bc9a 92c3 3172 86eb f238 be57 9786 ......1r...8.W..
0x0090: a9e3 b2e7 b4bb 197b 7ef4 b0f2 267e 06c8 .......{~...&~..
0x00a0: 5594 f0a3 1645 4ac1 6035 27f9 845c 201b U....EJ.`5'..\..
0x00b0: 7a23 e3b2 249f 5adf 48a7 14f8 51aa f439 z#..$.Z.H...Q..9
0x00c0: e9a5 9add 0000 aa55 .......U
18:36:43.233282 IP 192.168.1.240.49153 > 255.255.255.255.6667: UDP, length 172
0x0000: 4500 00c8 0618 0000 ff11 f274 c0a8 01f0 E..........t....
0x0010: ffff ffff c001 1a0b 00b4 f1e8 0000 55aa ..............U.
0x0020: 0000 0000 0000 0013 0000 009c 0000 0000 ................
0x0030: d097 6667 6f33 69eb 10b5 e9f1 32fd 802a ..fgo3i.....2..*
0x0040: 748d b61a 5e0b 3034 aff7 9af9 cddc f214 t...^.04........
0x0050: 4ef9 12df 8046 2fa3 7469 859b 52d0 97eb N....F/.ti..R...
0x0060: 35d6 9379 4bc7 a48f 53c5 29be 7e05 2782 5..yK...S.).~.'.
0x0070: 7256 f992 ef0b b3c9 946f 6ca8 e2e1 4853 rV.......ol...HS
0x0080: 2e0d bc9a 92c3 3172 86eb f238 be57 9786 ......1r...8.W..
0x0090: a9e3 b2e7 b4bb 197b 7ef4 b0f2 267e 06c8 .......{~...&~..
0x00a0: 5594 f0a3 1645 4ac1 6035 27f9 845c 201b U....EJ.`5'..\..
0x00b0: 7a23 e3b2 249f 5adf 48a7 14f8 51aa f439 z#..$.Z.H...Q..9
0x00c0: e9a5 9add 0000 aa55 .......U
Turn off
Captured with root@LEDE:~# tcpdump -i wlan0 dst 192.168.1.240 -X
19:28:37.699451 IP 192.168.1.178.41410 > 192.168.1.240.6668: Flags [P.], seq 1198273966:1198274037, ack 144896, win 65535, length 71 0x0000: 4500 006f 383b 4000 4006 7d5b c0a8 01b2 E..o8;@.@.}[.... 0x0010: c0a8 01f0 a1c2 1a0c 476c 35ae 0002 3600 ........Gl5...6. 0x0020: 5018 ffff 7278 0000 0000 55aa 0000 0005 P...rx....U..... 0x0030: 0000 000d 0000 0037 332e 3300 0000 0000 .......73.3..... 0x0040: 0000 0b00 09cb d0a8 5b7e 1c66 c995 c4fa ........[~.f.... 0x0050: 49ba 3815 3f33 2863 f141 c27e 0295 4406 I.8.?3(c.A.~..D. 0x0060: c8d5 b6ad 8b11 0046 d5dc 8700 00aa 55 .......F......U 19:28:37.699511 IP 192.168.1.178.41410 > 192.168.1.240.6668: Flags [P.], seq 0:71, ack 1, win 65535, length 71 0x0000: 4500 006f 383b 4000 4006 7d5b c0a8 01b2 E..o8;@.@.}[.... 0x0010: c0a8 01f0 a1c2 1a0c 476c 35ae 0002 3600 ........Gl5...6. 0x0020: 5018 ffff 7278 0000 0000 55aa 0000 0005 P...rx....U..... 0x0030: 0000 000d 0000 0037 332e 3300 0000 0000 .......73.3..... 0x0040: 0000 0b00 09cb d0a8 5b7e 1c66 c995 c4fa ........[~.f.... 0x0050: 49ba 3815 3f33 2863 f141 c27e 0295 4406 I.8.?3(c.A.~..D. 0x0060: c8d5 b6ad 8b11 0046 d5dc 8700 00aa 55 .......F......U 19:28:37.715331 IP 192.168.1.178.41410 > 192.168.1.240.6668: Flags [.], ack 92, win 65535, length 0 0x0000: 4500 0028 383c 4000 4006 7da1 c0a8 01b2 E..(8<@.@.}..... 0x0010: c0a8 01f0 a1c2 1a0c 476c 35f5 0002 365b ........Gl5...6[ 0x0020: 5010 ffff bb54 0000 P....T.. 19:28:37.715391 IP 192.168.1.178.41410 > 192.168.1.240.6668: Flags [.], ack 92, win 65535, length 0 0x0000: 4500 0028 383c 4000 4006 7da1 c0a8 01b2 E..(8<@.@.}..... 0x0010: c0a8 01f0 a1c2 1a0c 476c 35f5 0002 365b ........Gl5...6[ 0x0020: 5010 ffff bb54 0000 P....T.. 19:28:37.720451 IP 192.168.1.178.41410 > 192.168.1.240.6668: Flags [.], ack 120, win 65535, length 0 0x0000: 4500 0028 383d 4000 4006 7da0 c0a8 01b2 E..(8=@.@.}..... 0x0010: c0a8 01f0 a1c2 1a0c 476c 35f5 0002 3677 ........Gl5...6w 0x0020: 5010 ffff bb38 0000 P....8.. 19:28:37.720511 IP 192.168.1.178.41410 > 192.168.1.240.6668: Flags [.], ack 120, win 65535, length 0 0x0000: 4500 0028 383d 4000 4006 7da0 c0a8 01b2 E..(8=@.@.}..... 0x0010: c0a8 01f0 a1c2 1a0c 476c 35f5 0002 3677 ........Gl5...6w 0x0020: 5010 ffff bb38 0000 P....8.. 19:28:37.727851 IP ec2-3-121-210-75.eu-central-1.compute.amazonaws.com.8886 > 192.168.1.240.49153: Flags [P.], seq 2446234639:2446234708, ack 35378, win 65535, length 69 0x0000: 4500 006d 3ac2 4000 ed06 ba6b 0379 d24b E..m:.@....k.y.K 0x0010: c0a8 01f0 22b6 c001 91ce 940f 0000 8a32 ...."..........2 0x0020: 5018 ffff 0755 0000 1703 0300 40c9 f2fa P....U......@... 0x0030: 184f 47fe 3f04 4530 a14b ff5a c4ed 2364 .OG.?.E0.K.Z..#d 0x0040: b76a 065e e367 8569 d83b 7584 8b4b 05c7 .j.^.g.i.;u..K.. 0x0050: b699 c776 aba7 b63b 8491 db21 ece0 619b ...v...;...!..a. 0x0060: 761e f4bc af1f 82f4 b550 95fa 46 v........P..F