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Hi, I've used your library but I'm having issue with the sensor and I'm hoping you could shine some light on the issue. When I first connected the sensor, library seems to be communicating without err…
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I use arduino uno r3 connected to mh-z19b running on arduino ide using this mh-z19 library. CO2 measurement results are 0ppm or 10000ppm. Where am I wrong, please help me
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Hi,
sorry to open an issue, I have just 2 questions but don not see how to ask without opening an issue.
I wonder if the fan could have an impact on the pressure reading in the box. Did you test wit…
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### The problem
Since ESPHOME 2024.02 my ESP32 device with MH-Z19B sensor stopped reporting CO2 values.
In the upgrade release notes a 'breaking change' is mentioned, but no update of user manu…
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센서
- 미세먼지
- 습도 감지
- 가스 감지(이산화탄소 감지 센서)
그 외
- 미세먼지 필터(팬에 설치함, 미세먼지가 많으면 창문을 닫고 미세먼지 필터되는 팬 작동)
- 팬: 창문 옆에 설치 -> 밑 글 참조
- 열선(팬 설치시 원통으로 구멍을 뚫을 건데 그 원통에 열선을 감을 것. 외부에서 공기가 들어올 때 열선 효과로 온도 따듯해짐 )…
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Hi,
so i have an ATTiny1614 (16kB Flash, 2kB RAM) with megaTinyCore, a 4-digit serial display and the MHZ-19C. I'm using hardware serial to save memory.
When i flash the code everything works as e…
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I'm quite a newbie in this, but the example doesnt run
it gives me an error
mh-z14a:4: error: 'Serial1' was not declared in this scope
which is undestundable because Serial1 is indeed not d…
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Please render `waterway=canal` thinner. The current rendering looks very strange for small irrigation canals and seems to lead people to wrongly tag them as `waterway=ditch`, `waterway=drain` (which a…
ghost updated
2 months ago
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Hi all,
I have an Mh-z19c connected to a Pi Zero W with TxD and RxD cross connected to pins 8 (GPIO 14) and 10 (GPIO 15) as per the repo readme and I see an orange light flashing inside indicating …