<![CDATA[Env vs Hat Env]]>Hey all,

finally i have some time to play with Env Hat, at first time there was some strange readings +-5% diff then normal env.
Now there was time to check this out and here it is:
text alternatywny
and HW inside:
text alternatywny

HW info:
M5StickC ENV Hat (DHT12, BMP280, BMM150)
ENV Unit with Temperature Humidity Pressure Sensor (DHT12+BMP280)

Inside ENV Hat we have DHT12 without blue case du the size, but why there is so big difference between normal Env ?

Any clue ?

Just BTW i have 3 Env Hat and all works in same way.

Regards

]]>https://community.m5stack.com/topic/1241/env-vs-hat-envRSS for NodeTue, 28 Apr 2026 23:06:46 GMTMon, 19 Aug 2019 17:02:22 GMT60<![CDATA[Reply to Env vs Hat Env on Thu, 05 Sep 2019 20:22:38 GMT]]>@grlind I was able to get to work in Ardunio I just combine the DHT into the main sketch all things good though the pressure reading are off... I owuld like to see the uflow - I have not done anything in uflow want to try it.. Is your code posted somewhere?

]]>https://community.m5stack.com/post/5489https://community.m5stack.com/post/5489Thu, 05 Sep 2019 20:22:38 GMT<![CDATA[Reply to Env vs Hat Env on Fri, 30 Aug 2019 08:39:34 GMT]]>@dda said in Env vs Hat Env:

@mati I have mentioned this to Jimmi, and his answer basically was, well don't use wifi and OLED. Not exactly a practical answer. I'd rather have a long hat, isolating the DHT and BMP from the heat.

rlly ?! hmm what's the point of making HAT with req extra cable to unHAT it :D
ok let's end this topic as a lesson. thx @dda for info.

]]>https://community.m5stack.com/post/5384https://community.m5stack.com/post/5384Fri, 30 Aug 2019 08:39:34 GMT<![CDATA[Reply to Env vs Hat Env on Fri, 30 Aug 2019 07:30:42 GMT]]>@mati I have mentioned this to Jimmi, and his answer basically was, well don't use wifi and OLED. Not exactly a practical answer. I'd rather have a long hat, isolating the DHT and BMP from the heat.

]]>https://community.m5stack.com/post/5383https://community.m5stack.com/post/5383Fri, 30 Aug 2019 07:30:42 GMT<![CDATA[Reply to Env vs Hat Env on Thu, 29 Aug 2019 05:55:01 GMT]]>@grlind well its simple UIFlow drag and drop showcase.
I will try to do same in arduino today.

]]>https://community.m5stack.com/post/5361https://community.m5stack.com/post/5361Thu, 29 Aug 2019 05:55:01 GMT<![CDATA[Reply to Env vs Hat Env on Wed, 28 Aug 2019 15:29:32 GMT]]>@mati

Can you tell me how to compile the code I am confused on how to bring the code into the Arduino IDE.

I created a main sketch and then copied the code into Mstickc_ENVHat, I also created 4 tabs.. DHT12.cpp, DHT12.h, and bmm150.cpp, and bmm150.h, and bmm150_defs.h...

I get errors

C:\Users\AppData\Local\Temp\arduino_build_90317\sketch\MstickC_ENVhat.ino.cpp.o:(.literal._Z4loopv+0x34): undefined reference to `DHT12::readTemperature(unsigned char)'

C:\Users\AppData\Local\Temp\arduino_build_90317\sketch\MstickC_ENVhat.ino.cpp.o:(.literal._Z4loopv+0x38): undefined reference to `DHT12::readHumidity()'

]]>https://community.m5stack.com/post/5351https://community.m5stack.com/post/5351Wed, 28 Aug 2019 15:29:32 GMT<![CDATA[Reply to Env vs Hat Env on Wed, 28 Aug 2019 09:12:35 GMT]]>@dda said in Env vs Hat Env:

If you have the OLED and WiFi on, the heat they produce will skew the results. I connect the ENV hat to my Stick C with wires, and I get different, lower-temp results.

So after test with extra cables all is ok when hat is moved out from stick.

But this is a main clue of hat to stick it in to StickC without extra lobg cable.

@lukasmaximus please comment this, for me this looks like design issue.

]]>https://community.m5stack.com/post/5342https://community.m5stack.com/post/5342Wed, 28 Aug 2019 09:12:35 GMT<![CDATA[Reply to Env vs Hat Env on Tue, 20 Aug 2019 05:05:01 GMT]]>Ok let me try it. So the whole clue of env hat should come with some kind of shield to eliminate heat from stick.

]]>https://community.m5stack.com/post/5253https://community.m5stack.com/post/5253Tue, 20 Aug 2019 05:05:01 GMT<![CDATA[Reply to Env vs Hat Env on Mon, 19 Aug 2019 18:28:51 GMT]]>If you have the OLED and WiFi on, the heat they produce will skew the results. I connect the ENV hat to my Stick C with wires, and I get different, lower-temp results.

]]>https://community.m5stack.com/post/5244https://community.m5stack.com/post/5244Mon, 19 Aug 2019 18:28:51 GMT