[clug] Raspberry Pi WLAN issues

Stephen Gibson Stephen.Gibson at anu.edu.au
Thu Jun 12 19:14:06 MDT 2014

Not sure how far Jessica has progressed with this, but FYI my Rpi wifi 
now has had a 100% reliable connection since I started running a crontab 
job, to read a temperature/humidity sensor every 10 minutes. Prior to 
this, the wifi connection would fail each week. Rpi website suggests 
something to do with the Rpi sleeping, and dropping the wifi connection, 
but I had not found a resolution via the suggested fixes.

Further info re sensors, steer clear of DHT11 if you require an accurate 
temperature reading.

Temperature/humidity:      DHT11 has only +-2C accuracy. DHT22 is more 
accurate +-0.5C
Temperature only:             DS18B20 temperature  +-0.5C


On 27/05/14 22:43, Jessica Smith wrote:
> <snip>
> We have an RPi that is giving one of the IT teachers some grief, and I took
> a quick look at it today. He's trying to get it connecting via wifi using a
> USB wifi dongle, and it seems to be… somewhat flaky. Using the wifi
> <snip>
> Any other troubleshooting suggestions much appreciated.
> Cheers,
> Jessica

More information about the linux mailing list