This ESP01 driven station collects data from a BME280 (air pressure, humidity and temperature) and a MAX44009 (light). It transmits its data over the WIFI at 15 minutes intervals. The weather station is running outside again (16/4/21). It now runs on one 18650 rechargeable battery. Note – temperature recording is highly inaccurate during daytime. The case for the station has a perspex cover. When the sun comes out it becomes a mini-greenhouse.


Battery voltage = 3.4 V
Last read – 2021-05-16 15:18:33
c-0.195,0.195-0.451,0.293-0.707,0.293s-0.512-0.098-0.707-0.293c-0.391-0.391-0.391-1.023,0-1.414l3.425-3.424 c-3.375-3.059-7.776-4.987-12.634-5.215c0.015,0.067,0.041,0.13,0.041,0.202v4.687c0,0.552-0.447,1-1,1s-1-0.448-1-1V0.25 c0-0.071,0.026-0.134,0.041-0.202C14.39,0.279,9.936,2.256,6.544,5.385l3.576,3.577c0.391,0.391,0.391,1.024,0,1.414 c-0.195,0.195-0.451,0.293-0.707,0.293s-0.512-0.098-0.707-0.293L5.142,6.812c-2.98,3.348-4.858,7.682-5.092,12.459h4.804 c0.552,0,1,0.448,1,1s-0.448,1-1,1H0.05c0.525,10.728,9.362,19.271,20.22,19.271c10.857,0,19.696-8.543,20.22-19.271h-5.178 C34.76,21.271,34.313,20.823,34.313,20.271z M23.084,22.037c-0.559,1.561-2.274,2.372-3.833,1.814 c-1.561-0.557-2.373-2.272-1.815-3.833c0.372-1.041,1.263-1.737,2.277-1.928L25.2,7.202L22.497,19.05 C23.196,19.843,23.464,20.973,23.084,22.037z’fill=#26B999 /> C1.261,38.825,0,41.403,0,44.286c0,5.367,4.351,9.718,9.719,9.718c5.368,0,9.719-4.351,9.719-9.718 c0-2.943-1.312-5.574-3.378-7.355V18.436h-3.914v-2h3.914v-2.808h-4.084v-2h4.084V8.82H11.976z M15.302,44.833 c0,3.083-2.5,5.583-5.583,5.583s-5.583-2.5-5.583-5.583c0-2.279,1.368-4.236,3.326-5.104V24.257C7.462,23.01,8.472,22,9.719,22 s2.257,1.01,2.257,2.257V39.73C13.934,40.597,15.302,42.554,15.302,44.833z’fill=#ed4f4a /> C29.235,17.95,14.618,0,14.618,0z M13.667,37.135c-5.604,0-10.162-4.56-10.162-10.162c0-0.787,0.638-1.426,1.426-1.426 c0.787,0,1.425,0.639,1.425,1.426c0,4.031,3.28,7.312,7.311,7.312c0.787,0,1.425,0.638,1.425,1.425 C15.093,36.497,14.455,37.135,13.667,37.135z’fill=#3C97D3 />
Pressure Temperature Humidity Light Intensity
996.3 mb 54.1 °C 20.8 % 56401.9 lux
Data graphed for last 24 hours
Data graphed for last 28 days
Raw data for the past 24 hours.

Pressure (mb) Temperature (°C) Humidity (%) Light (lux) Date/Time
999.5 48.3 23.1 28201.0 2021-05-15 15:28:00
999.4 45.4 24.4 50135.0 2021-05-15 15:42:10
999.3 47.9 23.4 50135.0 2021-05-15 15:56:36
999.2 48.7 23.7 50135.0 2021-05-15 16:10:59
998.9 48.6 23.4 43868.2 2021-05-15 16:25:21
999.0 45.9 25.4 40734.7 2021-05-15 16:39:36
999.3 38.7 30.4 28201.0 2021-05-15 16:53:35
999.3 38.1 30.6 31334.4 2021-05-15 17:07:52
999.3 35.7 33.2 28201.0 2021-05-15 17:21:59
999.2 37.7 32.6 28201.0 2021-05-15 17:36:23
999.6 26.1 41.7 7833.6 2021-05-15 17:50:20
999.9 19.7 49.1 5875.2 2021-05-15 18:04:20
1000.1 16.8 52.5 7050.2 2021-05-15 18:18:29
1000.1 15.5 54.5 7050.2 2021-05-15 18:32:42
1000.1 14.6 56.1 6266.9 2021-05-15 18:46:57
1000.0 14.0 57.4 6266.9 2021-05-15 19:01:13
1000.0 13.2 58.6 5483.5 2021-05-15 19:15:29
1000.0 12.6 59.4 4308.5 2021-05-15 19:29:43
1000.2 11.1 61.1 3133.4 2021-05-15 19:43:56
1000.3 10.2 62.0 2937.6 2021-05-15 19:58:11
1000.3 9.0 62.3 2545.9 2021-05-15 20:12:24
1000.3 8.8 62.3 2741.8 2021-05-15 20:26:41
1000.4 7.7 62.4 1762.6 2021-05-15 20:40:56
1000.5 6.6 62.5 979.2 2021-05-15 20:55:10
1000.4 5.6 62.7 587.5 2021-05-15 21:09:25
1000.5 4.9 62.9 342.7 2021-05-15 21:23:40
1000.5 4.5 63.1 159.1 2021-05-15 21:37:55
1000.5 4.7 63.3 49.0 2021-05-15 21:52:12
1000.4 5.0 63.2 12.2 2021-05-15 22:06:31
1000.3 5.4 63.2 2.3 2021-05-15 22:20:49
1000.3 5.4 62.9 0.0 2021-05-15 22:35:06
1000.2 5.0 62.8 0.0 2021-05-15 22:49:22
1000.2 4.5 62.6 0.0 2021-05-15 23:03:38
1000.1 4.0 62.6 0.0 2021-05-15 23:17:54
1000.2 3.3 62.5 0.0 2021-05-15 23:32:08
1000.1 2.4 62.5 0.0 2021-05-15 23:46:24
1000.1 2.3 62.8 0.0 2021-05-16 00:00:38
1000.1 2.2 62.6 0.0 2021-05-16 00:14:53
1000.1 2.1 62.6 0.0 2021-05-16 00:29:09
1000.1 1.7 62.5 0.0 2021-05-16 00:43:24
1000.1 1.9 62.8 0.0 2021-05-16 00:57:41
1000.1 1.7 62.9 0.0 2021-05-16 01:11:57
999.9 1.9 62.6 0.0 2021-05-16 01:26:14
999.8 2.3 62.8 0.0 2021-05-16 01:40:33
999.8 2.3 62.3 0.0 2021-05-16 01:54:50
999.8 1.6 62.4 0.0 2021-05-16 02:09:05
999.7 1.1 62.6 0.0 2021-05-16 02:23:21
999.7 0.9 62.6 0.0 2021-05-16 02:37:38
999.5 0.6 62.6 0.0 2021-05-16 02:51:53
999.5 -0.2 62.7 0.0 2021-05-16 03:06:07
999.4 -0.2 62.8 0.0 2021-05-16 03:20:25
999.3 -0.3 62.8 0.0 2021-05-16 03:34:40
999.2 0.2 63.5 0.0 2021-05-16 03:48:58
999.2 0.3 62.6 1.5 2021-05-16 04:03:14
999.4 -0.5 62.5 9.2 2021-05-16 04:17:31
999.3 -0.6 62.7 39.8 2021-05-16 04:31:47
999.2 -0.5 63.2 134.6 2021-05-16 04:46:04
999.1 0.8 63.1 318.2 2021-05-16 05:00:24
999.0 1.7 62.9 636.5 2021-05-16 05:14:43
999.0 2.1 62.2 1077.1 2021-05-16 05:29:03
999.0 2.9 61.7 1762.6 2021-05-16 05:43:22
999.0 2.9 61.3 2154.2 2021-05-16 05:57:39
999.0 2.6 61.3 2154.2 2021-05-16 06:11:56
998.9 3.6 60.6 3133.4 2021-05-16 06:26:16
998.9 4.0 60.2 4308.5 2021-05-16 06:40:32
998.9 4.3 60.3 2937.6 2021-05-16 06:54:52
999.0 4.3 60.6 3133.4 2021-05-16 07:09:09
998.9 5.0 60.1 4700.2 2021-05-16 07:23:27
998.9 6.2 59.3 3916.8 2021-05-16 07:37:50
999.0 5.9 59.9 3525.1 2021-05-16 07:52:05
999.1 6.3 60.1 3916.8 2021-05-16 08:06:24
999.1 6.9 60.0 4308.5 2021-05-16 08:20:43
998.8 9.9 57.0 12533.8 2021-05-16 08:35:06
998.5 17.2 50.7 18800.6 2021-05-16 08:49:44
998.4 19.8 48.4 20367.4 2021-05-16 09:04:04
998.3 23.3 45.4 18800.6 2021-05-16 09:18:41
997.9 30.8 35.4 43868.2 2021-05-16 09:33:20
997.7 33.5 32.8 43868.2 2021-05-16 09:47:40
997.5 39.1 30.8 43868.2 2021-05-16 10:02:15
997.3 43.4 28.7 50135.0 2021-05-16 10:16:44
997.5 37.9 33.5 56401.9 2021-05-16 10:30:53
997.2 46.6 26.8 50135.0 2021-05-16 10:45:38
997.1 49.2 24.5 50135.0 2021-05-16 11:00:04
997.0 50.2 23.3 50135.0 2021-05-16 11:14:25
996.9 52.5 22.4 50135.0 2021-05-16 11:28:51
996.9 55.9 21.1 68935.7 2021-05-16 11:43:21
996.8 53.7 21.1 68935.7 2021-05-16 11:57:20
996.7 56.8 20.5 81469.4 2021-05-16 12:11:48
996.6 56.9 19.3 68935.7 2021-05-16 12:26:10
996.5 58.5 19.8 75202.6 2021-05-16 12:40:35
996.5 59.7 17.8 75202.6 2021-05-16 12:54:58
996.4 60.4 18.5 87736.3 2021-05-16 13:09:18
996.1 61.7 18.9 40734.7 2021-05-16 13:23:51
996.6 43.5 30.3 23500.8 2021-05-16 13:37:29
997.0 34.7 38.0 21934.1 2021-05-16 13:51:26
997.2 30.9 42.5 18800.6 2021-05-16 14:05:30
997.2 32.4 39.0 34467.8 2021-05-16 14:19:48
996.8 39.8 32.9 20367.4 2021-05-16 14:34:46
996.5 50.9 23.5 68935.7 2021-05-16 14:49:30
996.6 50.4 22.5 62668.8 2021-05-16 15:03:57
996.3 54.1 20.8 56401.9 2021-05-16 15:18:33