āHope this helps. Good luck itās a great project. Feel free to PM me is you need any additional info. We have seen some problems at very low temperatures as the 414D is only rated to a min temp of 32 deg F (o C), so Iām in the process of adding a automotive bulb (1157) with a small thermostat to keep it from getting to warmā
Hello,
For the history of temperature, I solved the problem in a camera housing with heater thermostat.
I noticed that from -8
Installed the LR4/Fluke 414D last night just before the snow and it performed perfectly. We received 4.2 inches overnight. The LR4 / Fluke 414D mod is far superior to the LR3 / Fluke 411D. No cable bending and shoving and tucking like the LR3/Fluke 411D.
I hope to get at it tomorrow. I bought 3 feet of heater tape today for inside the box. The only trouble is they say it is a torx T8 to unscrew the meter but the one I bought today is too large so it must be a T7 or T6. It is snowing here now and due to snow several more times this week so Iāll soon find out how well it works.
Itās a #6 torx. All Porcupines instructions are incorrect. I keep meaning to send Richard a note and I keep forgetting. If you live near a Sears store they have nice torx for I think $3.99.
Thanks MikeyM. I went outside on Wed. to blow some snow and get ready for the install and slipped on the ice. Iāve never been this sore in my life!!! X-rays show no broken ribs but Iād swear everyone was broken. It was all I could do to type this.
Darn near killed myself yesterday but I think I have the sensor installed and working correctly. Are the php graphs for snow available? If it is where can I grab a copy?
I glued a 3 foot piece of heater tape on the inside of the box and havenāt had any problems. Itās been quite cold here zero deg F and colder lately. Iām using the lr4 and 414d
Iām using an 1157 automotive bulb in my enclosure with a button type thermostat and havenāt had any problems. I added the heater as the Fluke 411D and 414D are only rated down to 32 def F (0 deg C). My enclosure temperatures can be seen at:
I have finally taken the plunge to Laser Snow Depth measuring, and boy does it work well.
Just a few questions.
Are you guys running one of the Porcupine demo programs 24/7 to collect the data with WD (1 wire)? What is your upload rate back to the computer from the Range Finder? Have you had any problems with either Porcupine demo programs or the 1 wire program stopping causing it not to receive data? Are you guys turning the laser off when not in use?
I havenāt installed a heater yet, and the sensor seems to be measuring without issue (even this weekend at -14F).
I have mine measuring using these settings:
Centimeters, or inches if you live in the states.
Interval
1 hour.
Iām running the demo program 24/7 with the 1 wire running as well. Wd checks every hour on the hour. Leave the laser on. I havenāt plugged in my heater this year either and itās working flawlessly so far with temps down to -32C/-26F. Do you have snow graphs running in WD? If not check our my site laity.ca I have the php stuff here as do several others if you need them.
Thanks for the reply. For some reason I cannot run the demo on my computer so I am running the basic program (I have changed the interval to 30 mins using another computer).
Sometimes one or the other hangs so I need to restart the combo, still troubleshooting that problem.
Glad to see that you have it working. Iām using the LRSimple program to activate the laser sensor as it seems the Dallas 1-wire reader wonāt reliably enable the sensor. No problems here with the LRSimple. I do use the LRDemo if I want to change the settings of the laser ie sampling rate. Iām using 1 hour sampling. After playing with various sampling rates it appears that with more frequent sampling rates there was a higher rate of errors causing minor fluctuations in the readings. I start the LRSimple program a few minutes before the hour followed by WD as WD will report the new snowfall on the hour. As for the heater Iām using 3 - 3 ohms power resistors in series powered with 12 volts and a button type thermostat located in the enclosure which is working very well. I think the LR4/Fluke 414D combo is less susceptible to the low temp problem than the LR3/411D was. Everyone that was using the LR3/411D had problems last Winter when the temp dropped well below 0 F.
I finally mounted the laser snow Depth sensor
Itās mounted in a waterproof plastic box with a hole cut out for the laser
After I had taken the photos, I realised I needed to add a shield around the laser hole
Tested running the demo software, alongside weather display