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Temp Probe
Posted: Sun Aug 10, 2014 8:18 am
by mask0017
Temp probe been behaving erratically lately.
Can I use one of these?
http://***DOTebayDOTcoDOTuk/itm/281392057533
Just wire plug on or do you need to put resister in.
Yes I would get one from the RA shop but not being in the US post and handling charges when it gets into the UK ends up $70 for one $9 probe.
(Can't post links)
Thanks
mask0017
Re: Temp Probe
Posted: Mon Aug 11, 2014 10:35 am
by Piper
The link doesn't work for me but if it's a DS18B20 probe you'll be fine.
When you say it's "behaving erratically lately," can you elaborate a little on that? You may not have a bad probe. Mine will fluctuate by 0.2 degrees every second or so when I have bus issues. I have to re-seat the USB cables in my expansion hub to get it to work again when it starts doing that.
~Charlie
Re: Temp Probe
Posted: Mon Aug 11, 2014 3:06 pm
by mask0017
Behaving erratically: it reads ok then reads 0 then maybe 10 then 0 does that for a while.
Also seen the unit rebooting its self when it does that.
Here the spec of probe in the link.
Thanks for the answer
Specification
Supply voltage: 3.0 - 5.5V
Supply current: 1 - 1.5mA
Accuracy: ± 0.5 (-10°C to +85°C), ± 2 (-55°C to +125°C)
Resolutio bit: 12bit
Package type: TO-92
Wires: 3
Wire length: 1m
Operating temperature range: -55°C to +125°C
Output Type: Digital
Click here for full data sheet
Wiring colors: RED - Vdd, BLACK - GND, YELLOW- Data
Package List
1 x DS18B20 Waterproof Digital Temperature Sensor
Re: Temp Probe
Posted: Mon Aug 11, 2014 3:09 pm
by rimai
If you look at the head unit pins pointing at you, the right is Vdd, the middle is data and the left is GND.
Re: Temp Probe
Posted: Mon Aug 11, 2014 7:56 pm
by mask0017
Hmmm Put that sensor on from left looking at front of RA <Black-Yellow-Red> RA boots then goes black no screen no green LED no red LED.
Also my original Temp probe is <Black-Red-White>
Stumped
mask0017