Temp Probe

Basic / Standard Reef Angel hardware
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mask0017
Posts: 23
Joined: Thu Jun 05, 2014 4:25 pm

Temp Probe

Post 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
Piper
Posts: 303
Joined: Fri Jul 20, 2012 7:13 am
Location: Oakley, CA

Re: Temp Probe

Post 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
mask0017
Posts: 23
Joined: Thu Jun 05, 2014 4:25 pm

Re: Temp Probe

Post 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
rimai
Posts: 12857
Joined: Fri Mar 18, 2011 6:47 pm

Re: Temp Probe

Post 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.
Roberto.
mask0017
Posts: 23
Joined: Thu Jun 05, 2014 4:25 pm

Re: Temp Probe

Post 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
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