Your next mission (should you choose to accept it) is to research how to round numbers to one decimal place.
Personally, I prefer my atmospheric pressure to be a whole number with no decimal places, temperature to one decimal place is a useable figure, and humidity with no decimal places works well for me, but one decimal place would also work.
I think the “-“ symbol between the number and the unit of measurement is a bit confusing, it looks like a minus sign to me.
You can also add a Superchart widget to display all three pieces of data on one graph, which makes more sense of the data. Atmospheric pressure in particular needs a chart to show the data so you can see the trends and help predict what’s happening with the weather (okay, you’re in the UK so we know it’s probably going to rain sometime soon).
Yes, it does rain here a lot, site is still flooded.
Now that I have some data to play with, which seems to have stabilised over night, maybe the BME280 requires a “burn in” period? I’ve had chance to play with the Blynk app, its so cleverly designed, what a brilliant idea.
Yes, I accept the mission, i’d like everything to 1 decimal place. I’ll report back soon.
I left it running in the utility over night while it’s LiPo battery charged up, gave me time to play with the graphs etc in the app. No more weird minus sign.
In hindsight these little MCU’s are not the cute little bargain I thought I was getting. Not easy to fire up, they don’t like having sensors connected when initially powered on, they freeze. And they’re extremely small, especially for me, these hands are used for steel and concrete not tiny delicate electronics. That said I enjoyed the challange and I will find a use for them. Even if its only to monitor the “Temp, Pressure and Humidity” of the dogs kennels.
I have one… fun to play around with as it has some enhanced IO and features… but more of an “up and comer” with Blynk as the ESP32 core is still a work in progress. Either snag one, just to mess around with, or hold off for later.
But the D1 Mini is the main workhorse, and worth getting a handful to use… much smaller and simpler to mess around with, especially with all those stackable shield options.
And don’t worry about the Pro version… it is just a case of External Antenna upgradable… but at the cost of some minor soldering work
@Shadeyman don’t feel too bad about buying the wrong MCU I believe there are still some Neanderthals using those Arduino boards for “IOT” projects, eh @Gunner ?
You don’t need three separate chart widgets, one chart connected to thee different data streams is the way to go.
No ‘burn-in’ period that I’m aware of, but they are very sensitive to being in proximity to people (and dogs) as the heat and moisture from your breath and body will affect the sensors.
100% agree that you should buy a handful of Wemos D1 Mini’s.
We live in the UK too, but I’m in Asia at the moment, hence the unusual hours I’m keeping.
@PeteKnight 3 separate charts do have some advantages, Blynk gets enormously wealthy and user has better looking charts i.e. not the gruesome 3 axis labels pushed to the left and the reduced real estate.
I actually have one of these sensors feeding a single superchart and it’s really useful to see the relationship between temperature and humidity, and to a lesser extent pressure. It’s offlinr at the moment, otherwise I’d post a screenshot.
@PeteKnight I did try the 3 into 1 chart but as @Costas says, things looked a little cramped so I went with 3. Hope you enjoy the dancing girls.
I’ve ordered 4 Mini D1’s, that should keep me occupied for a while. In the meantime I’ll be looking for something useful I can use these ESP8285’s for. Noticed someone posted an earth quake sensor(MPU6050) on here, might give that a try.
