Weather

Update #5 Progress!!! 😊 MAX7219 LED controller (for common-cathode LEDs) running common-anode 7 segment displays. The brightness isn't quite what I could like, but it should be fine. I may be able to tweak it a little, but the MAX7219 wasn't really designed for running common-anode, so if not, I can't complain. Now to make up a little daughter board with the MAX7219 and try it out for fitment/space etc. If all is good, then I'll make some more and get the display boards retrofitted with the new controllers. This IC will daisy chain too, but I might have to get a little clever with the code as

Update #4 My head still hurts.... But I am making progress. I have added an RTC ( DS3231 ), a micro SD card and a GPS receiver ( NEO-6M GPS Module ). The RTC is just for keeping time and date. The RTC will be set every hour, or 24, or whenever, to the GPS time. I need to have a think about UTC/BST for recording and displaying. Do I record everything in UTC and have adjustment on display, or do I set the RTC twice a year into UTC/BST and record using UTC/BST. The latter would be the most beneficial for displaying and graph creation, but with a caveat that 1 hour of readings will get screwed up

😢 Oh no! The large 40x4 LCD I have is too big for the enclosure I have, and want to use. The next size up enclosure with transparent front is twice the size, so whilst would fit the LCD there would be much wasted space and it wouldn't look right. So I can use a 20x4 LCD that will fit, but only half the display of the big one. I'll use the 20x4 for now and then change to the 40x4 if I find a suitable enclosure. I like the full transparent front and opaque back and sides. Fully transparent and it would look like a glass lasagne dish and I can't see the innards with an opaque front. Having the

I have just added 'wind chill' to the mix and seems to be calculating correctly. I had to put in some static numbers for testing as wind chill is only valid when the wind is moving more than 3mph (4.83kph/1.34ms) and the temperature is below 10°C. This is the formula: T_wc = 13.12 + 0.6215 * T_a * (0.3965 * T_a - 11.37) * v^0.16 Where: T_wc is the wind chill in Celsius temperature scale, T_a is the air temperature in degrees Celsius, v is the wind speed in kilometers per hour. This is the output with static wind (10MPH) and temp (9°C): Temperature: 9.00 | Humidity: 45.36 | Dew Point: 0.00 |

The sensors are good! The electronics are that is. I've checked over the anemometer, wind vane and rain gauge and all are working properly. They are going to need a little work to get them back to shipshape again and I may even pot them in, although the actual board have fared quite well. Only a bit of dull solder on the wind vane PCB. As you can see form the images all the sensors use good, old, conventional reed relays and a magnet on the spinney bit. I may swap these out for hall effect sensors in the future. One thing I would like is a better resolution for the wind vane. As it stands I

About 4 years ago my weather station failed. It was only a cheap WH1080 from Maplin (remember them?), but it did it's job for about 8 years. The sensors were getting a bit janky and then the transmitter stopped working. I managed to find a replacement transmitter in China and that did pair with my receiver, but I think the receiver is also broke, or the two aren't quite compatible as I can't save the settings on the receiver and Cumulus is telling me that it is getting some duff data. Now it lies in pieces as shown in the picture. Next stop.... the scrap bin. Goodbye old faithful cheapo

In reply to a nzoomed's question on radmon.org: Im wanting to build an outdoor monitoring station with an SBM20 and not sure if its good to use a PVC pipe to place the tube inside? Obviously im wanting something as thin as possible to let as many particles through as possible. Are there some materials I should avoid? Are beta particles typically encountered much in the environment? Should I only be worried about cosmic rays? Im not sure how much background radiation is from other sources, but im expecting there is a great deal from alpha decay from the likes of radon etc which will never be

Blackpool UK - 19 July 2017 - Started around 17:00 BST / 16:00 UTC During quite a downpour today, 20mm in one hour. At it's peak was 65mm/h. Background radiation increased by approx 50% / 11CPM over a 2.5hour period. Not much by any means but still an indication there was some radioactive substance in the rain. Please note the Radmon graphs are UTC and the rain graphs are BST (UTC + 1) and so there is an hour difference between them. What caused it? I could be anyone's guess. Radon causing decay products to get caught up in the rain? Radioactive cloud blowing over from somewhere? Radioactive