Hi all,
I was wondering if there is a way to calibrate the MAX6675 ? I have two and both of them seem to off by 20 degrees.. Possibly this is the best accuracy I can expect, not sure I have never used them before..
I would really like to get OTA working here as it's freezing outside and I have to go there to update the software in the greenhouse control system.
So please, can we have a 'how to' step-by-step guide to OTA? Please?
S.
Hello
I still didn't figure it out exactly, what is the issue with LGT8F328P and arduino, but for start, it can work, if you define 4x faster baud rate. So I define MY_BAUD_RATE 76800 and connect terminal with 19200, and it works. LGT is started in 8 MHz by default, and it looks like this is not corrected with mysensors. But this only helped for serial port, because later I had issues with DHT library timings.
If I later change speed to 16 MHz and start serial port again, it works as expected:
noInterrupts();
CLKPR = 0x80;
CLKPR = 0x01;
interrupts();
Serial.begin(19200);
as I experienced, MQ sensors are not really gaz sensitive, they are more particle size sensitive when hot enough and when not totally scrap.
I would not rely my life on them, if you have an alcool spray use it around and any MQ will to go the sky...
we’ve been using Triton detectors at my school for a while now, they catch both nicotine and THC vapor fast and it sends an alert right when someone vapes, even picks up small amounts. it’s probably the closest thing you’ll find for what you need.
@OldSurferDude Thanks!
I didn't touch the Arduino IDE for a while and forgot that the MYSBootloader doesn't come included in the Mysensor's library... My bad.
Thanks for the link! I should had searched first...
I use the OTA feature since 2017... It works well. So well that I forgot how to load the bootloader...
Regards!
