acurite | Acurite Weewx-SDR SmartHUB Acurite

I chose to go with #3 initially, but then moved to #4 because I already had a Pi, and a SmartHUB, but pressure data from the old SmartHUB isn't completely accurate as it's manipulated by Acurite - plus you're having to power this device and trick your pi into getting data from it. Just trash your SmartHUB and go with option #4.
Buy a SDR Receiver and connect it to a Linux box or Raspberry Pi. Weewx can upload your data to Wunderground, CWOP, PWSweather, Open Weathermap, Weather Bug, etc. Your cost is SDR dongle ($20) + Rpi ($30-50). Pros: Cheapest solution without buying more Acurite hardware. You can send to other weather providers supported by Weewx. Cons: No MyAcurite app access, no pressure data (pressure data comes from Access or SmartHUB, not the outdoor sensors).
If you want MyAcurite, you need an Acurite Access. You can still use items in #1 if you want local data and uploads to other providers; you can still use MyAcurite (through Acurite Access) to upload to Wunderground. You still won't have pressure data for your local weewx data unless you go to option 3. Pros: You can use the MyAcurite app to get your weather data and to send to Wunderground. Cons: You don't get local sensor data unless you also do items in #1. Even if you get local sensor data, you won't get pressure information unless you go to option #3.
If you want local data including pressure and ability to send data to providers other than Wunderground (i.e. Weewx), you'll need to have an old SmartHUB device that is still linked to some sensor and the items in #1. If you have an old SmartHUB device that just became recently unsupported, this is where many of you will be at. Pros: All original sensor data will exist locally (sensor data + local pressure data from SmartHUB). You can also send data to other providers via Weewx. Cons: MyAcurite won't work unless you also have an Acurite Access. Other con is that you'll have to run your old SmartHUB just to get pressure data, so you could be running two hubs (SmartHUB and Acurite access) simultaneously which seems wasteful.
If you want local data including pressure and ability to send data to providers other than Wunderground (i.e. Weewx), and you don't want/have SmartHUB device but you're comfortable soldering and ok spending $10 on a pressure sensor, then go this route. The device gets power from your Rpi, so no powering the otherwise dumb SmartHUB, nor do you need to trick your Pi into being a network bridge to get data from your SmartHUB - just throw it in the trash. Pros: All original sensor data will exist locally (sensor data + local pressure data from Pi sensor). You can also send data to other providers via Weewx. Cons: MyAcurite won't work unless you also have an Acurite Access. You'll need to solder pins to a pressure sensor and wire 4 dupont cables to your pi.
make sure you are using Wifi for LAN. Now do a test. Now you're in business. Now get the Weewx-SDR driver. Contents are based on weewx-interceptor package; Thanks Matthew for Weewx and this. This is not meant to be secure - if you have a hostile LAN, then you should adjust your access list in step 9. Then change permissions and create the file to collect the data.
Install Rasbian on your PI device. This guide is the best that I've found, so use it unless you know what you're doing or already have a PI installed. If you're bringing your own or already have one setup, make sure you are using Wifi for LAN. Your Pi will serve 2 purposes - run Weewx backend and web server (via Wifi) and act as place for your SmartHUB to submit it's pressure data to (via wired ethernet - your Pi will answer for hubapi.myacurite.com).
Install Weewx, SDR tools, Weewx-SDR, connect up your SDR device and make sure you see your sensors show up.
If you see above, the output allows you to map your sensor(s) to Weewx. It should look similar to this, but for more info, check Weewx-sdr instructions. This will go in /etc/weewx/weewx.conf. If you have more sensors, you can use extraTemp1, extraTemp2 and extraTemp3 as sensor names to map addіtional data to.
Hopefully you're getting sensor data now, go to http://your.ip.address/weewx and verify that you are getting data from your sensors and check /var/log/syslog if you're not. You won't get pressure data, so here's where your SmartHUB comes in. If you don't have a SmartHUB, you're done. If you want to send your Weewx data to other providers, check the config file in /etc/weewx/weewx.conf - if you want to get pressure data and are OK soldering, then go here to read about how to use a pressure sensor.
If you have a SmartHUB that is configured with at least one sensor, then keep going. Configure your Rpi to be an ethernet bridge. Again, you need to be using Wifi to connect to your lan so you can use ethernet to connect to your SmartHUB. The linked instructions worked perfect for my Pi 1 B+, and should work for newer devices. Don't connect your SmartHUB yet.
Add an entry to /etc/hosts on your device, it should look similar to below, but with the ip address (wireless lan IP) of your Pi, same one from step #4.
Install apache2 and enable cgi support (this assumes that this host only exists on your LAN and not exposed to the Internet. You're about to enable access to a webserver on your LAN).
Create a file and store it in /usr/lib/cgi-bin/myacurite, make it executable and create a directory and file to store pressure data.
Create a /etc/apache2/conf-enabled/acurite.conf. Change the Allow IP address/network to be whatever you configured for your DHCP range for your bridged network in step 5. The Access list is in case you do expose this server to the Internet, or reverse proxy connections to your internal Weewx server/Rpi.
Restart apache
Copy pond.py (from this repo) to /usr/share/weewx/user and enable in /etc/weewx/weewx.conf (this is based on this).
Restart Weewx; check /var/log/syslog for errors. If you see rtl_433 errors, you may need to make sure your antenna is plugged in. You can only run 1 instance of rtl_433; so if weewx is running, you can't debug using the commands in step 2, so stop weewx first.
Connect your SmartHUB to your Rpi via ethernet, it should start sending data to your Rpi and writing that pressure data to: /var/lib/bridge-data/pressure. It should not be attempting to send data to hubapi.myacurite.com (which is now dead anyway).
Now you can go to MyAcurite, plug in and register your Acurite Access if you haven't, and migrate your sensors over to your Access. Never connect your SmartHUB to the internet as you may lose it's existing configuration (which doesn't really matter since the only data coming out of SmartHUB that you care about is the pressure that's coming from the hub itself. You're getting the rest of the data via SDR). You can go into MyAcurite and remove your old SmartHUB device as it won't be getting any data anyway.