What size screw terminals will fit on the Soil Moisture and Soil Temperature connectors? Is it the 2.54mm ones?

I designed a case for this guy available here: https://www.thingiverse.com/thing:4693294 Hope it's useful!

X-post from my comment on the hookup guide tutorial:

To power my Photon Weather Shield, I purchased a 9V AC adapter wall wart (TOL-15314). By all accounts, this should be acceptable for the rated voltage of the 3.3V regulator on the shield (no modifications were made to the shield itself; no traces cut nor solder jumpers jumped. I understood the shield to come configured to accept ~2.5-11.5V in its default configuration).

Whenever I plug the board in, the regulator goes into thermal shutdown. It usually takes several minutes, but eventually it just locks everything up. I've been considering buying either a 5V wall wart, tacking on a heat sink, or swapping the MIC5205 3.3V regulator for a different regulator, but I figured I'd ask...am I crazy? I have my setup enclosed in a Big Red Box (PRT-11366) and the reg gets so hot that it actually effects the readings of the shield's onboard temp sensor...not to mention the thermal shutdown

I'm testing the weather station and getting temperature readings that are about 8 degrees (F) too high from both the Si7021 temperature/humidity and MPL3115A2 barometric pressure sensors. My code is based off the SparkFun example code. Any suggestions? I've heard some people have luck with putting the photon into deep sleep mode, but I want to be able to get readings more often from the other sensors.

I recently joined the club of people building a weather station using this board. I got the board sampling the onboard sensors and sending them to the internet in less than an hour! (That never happens.) Then, I soldered on a barrel jack to the bottom of the board and used an external LiPo battery to power the board (with the USB unplugged). The Photon wouldn't boot. However, it did boot fine when I unplugged the battery and powered it from USB instead. I then checked the power lines when it was powered by the battery, and they were a correct 3.3 V. Any ideas as to why it works from the USB power, but not from the barrel jack? I also have an issue with the wind/rain data. I am re-using the code from the Arduino-based example, and I verified that the pin assignments are the same (per the schematic), and it works on my Arduino shield. However, I'm getting wind speeds of ~70 mph when it's not spinning, which I think means the IRQ is triggering at every sample. Any ideas on how I can try troubleshooting this issue? Thanks!

Can I use this shield with Particle Asset Tracker?

Is there a way for me to measure the voltage being supplied to VIN like with the Arduino version of this shield? Looking at the schematics nothing seems to be connected to A2 & A3 (The pins used on the Arduino version)

I'd like to provide another comment on this, regarding reliability in extremely humid conditions.

Last night through to this afternoon, we experienced extremely dense fog blanketing our city. I awoke to crazy temperature readings from the Si7021: -47ºC temp / -6% humidity; at this time, the on-chip condensation-preventing "heater" is ON. Conditions are simply way too far outside the range of this sensor, and it has trouble coping.

But then, I noticed something I hadn't seen before: the MPL3115A2 also had trouble. Absolute pressure readings are -9.99, and its onboard temperature sensor is reading a mind-boggling -999ºC. This chip does not have a heater. I am at the mercy of the IC now, and its ability to recover from such extreme exposure.

I may venture to start using replaceable sensor break-outs, instead of the on-board units. Long-term life of permanently mounted sensors can be drastically shortened by the environment they are meant to measure.

Worked like a champ for me. Also had the Battery Shield, big-boy LiPo, nice size Solar Panel, and of course the weather gizmos'. The Photon sends the data to the cloud and my local html reads the data and populates some really cool controls and indicators. Extremely fun project. I call it MANFRED for ...

Monitoring

Apparatus

Networked

For

Reading

Environmental

Data

--- MANFRED ---

Hello SparkFun, I see you switched from the HTU21D (without protective cover) to the Si7021 (with protective cover). I made the same switch on my old-version Photon Weather Shield when the HTU21D died, too. I desoldered the chip and installed a Si7021 w/cover. An excellent choice, and it definitely helps to keep this board running more reliably.

But I would like to also inform users that both of these chips have a built-in heater that exists solely to prevent excessive condensation on the sensor in extreme humidity conditions. I deduced that what actually killed my HTU21D was a combination of 1) not being shielded/protected by the cover that the Si7021 has and 2) an extended period of fog - which caused sensor readings in excess of 110% humidity for a few days in a row, non-stop. The sensor could not cope with this condition.

My code, which was—at that time—based off the code provided by SparkFun, also did not make any use of the heater to prevent this sort of damage, although the provided library does have methods to turn it on and off.

I suggest using the SparkFun library's heaterOn() when the humidity rises above 100%, and heaterOff() when the humidity comes back down to something reasonable, like 95 or 98%. Also make sure that you turn the heater off in setup(), just to make sure that you put it in a known state when the unit boots up.

This also means that you will see temperature fluctuations on the Si7021 of up to two degrees Celsius while the heater is on. For that reason, I suggest switching your primary source of temperature data to the barometric pressure sensor's built-in temperature sensor, as it is unaffected by the heating element (it's on a separate IC).