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Published 20 hours ago • verified publisher icon bbcmicrobit

mciropython need to support more device such as dht11

Open yonghuming opened this issue 6 years ago • 4 comments

mciropython need to support more device

yonghuming avatar Mar 22 '18 08:03 yonghuming

Hi I've just ported a DHT11 sensor from raspberry pi. it would appear that the micro:bit runs too slow for 1 wire protocol devices like the DHT11. i use an AM3220 over the i2c bus for temperature and humidity sensing you can download the relevant code from https://github.com/mcauser/microbit-am2320

rhubarbdog avatar May 18 '18 08:05 rhubarbdog

I've done some work on this sensor class, it's still not working, but it's close, it receiving 35 out of 40 bits. I've written the time critical code in arm Thumb Assembly the .read method is too slow at switching between triggering the sensor and starting to grab the bit stream received from the sensor. The repository is https://github.com/rhubarbdog/microbit-dht11 please feel free to try and get this working i'm going to research speeding up my microbit/micropython

rhubarbdog avatar Nov 29 '18 00:11 rhubarbdog

have you got examples of further sensors you would like to see running on microbit?

rhubarbdog avatar Nov 29 '18 00:11 rhubarbdog

hi the sensor is now working you can download it from https://github.com/rhubarbdog/microbit-dht11

rhubarbdog avatar Dec 01 '18 00:12 rhubarbdog