WeMos D1 Mini - DHT22 shield

[woodat]

Perhaps some insulative material between the two, like foam or some thin ceramic, would help. Looks like there's plenty of space.

[mcauser]

WeMos made a shield for stacking the D1 mini + DHT22 side by side:
http://www.aliexpress.com/store/product ... 33925.html

[patvdleer]

Perhaps some insulative material between the two, like foam or some thin ceramic, would help. Looks like there's plenty of space.

Since I ordered a lot of sensors I'll try to make a test setup and plot the results. I should have enough to test multiple simultaneously with different methods of isolation.

WeMos made a shield for stacking the D1 mini + DHT22 side by side:
http://www.aliexpress.com/store/product ... 33925.html

This seems like they're trying to sell me a solution for their design flaw, besides mini/half size breadboard is cheaper and more useful i.m.h.o..

http://nl.aliexpress.com/item/1pcs-Qual ... 52269.html

[Roberthh]

This seems like they're trying to sell me a solution for their design flaw

I would not see it like that. The base is just a base and a mostly usefule for the mechanical integration of WeMos applications. The fact that it shows both a D1 and a temp sensor might be intentional, but just one of its possible uses.

[patvdleer]

This seems like they're trying to sell me a solution for their design flaw

I would not see it like that. The base is just a base and a mostly usefule for the mechanical integration of WeMos applications. The fact that it shows both a D1 and a temp sensor might be intentional, but just one of its possible uses.

I'm happy with the D1 mini, no argument about that! But they could at least post a warning or link to the other board on the product page of the DHT22 shield, one of the images clearly shows them directly mounting the shield on top of the D1.

http://aliexpress.com/store/product/DHT ... 93524.html

[deshipu]

I assume the D1 Mini is a development board -- for testing and writing your software, etc. Once you have a working prototype, you would build a proper device, with the sensors properly separated, etc. But of course that's not taking into account all the hobbyists out there.

By the way, those DHT11/22 sensors also warm themselves up if you take the measurements too often. You can see that all the lines on your plots climb up, slower or faster. This is actually mentioned in their datasheets.

[patvdleer]

By the way, those DHT11/22 sensors also warm themselves up if you take the measurements too often. You can see that all the lines on your plots climb up, slower or faster. This is actually mentioned in their datasheets.

True and I can't blame them for that, they didn't design and manufacturer the DHT22 itself but that's why I added multiple sensors as a control "group". I have more and will hook them all up later today/week. Possibly making a new post about temperature sensors with a lot more tests if there is any interest in that.

[jms]

Isn't this entirely expected given that the ESP8266 is warm to the touch unless you sleep it ?