Bought an Arduino kit recently and have done just a little bit with it, but not much. One of the projects I’m looking at uses an ATTiny85 to reduce CPU for a 433MHz receiver (https://github.com/pilight/pilight_firmware), so I bought some ATTiny85’s and will need to program them. That can be done using Arduino 1.6 – reference article here.
October 31, 2016
August 20, 2016
More 434MHz stuff to look at later
Acurite #0899 self emptying rain gauge – at Amazon
Blog post on reversing the signal from Acurite temperature sensors; may be similar for the rain gauges. Also mentions the RTL SDR. Probably wouldn’t be bad to have.
Another blog post regarding reading the Acurite 5n1 station. Possible that part of this will already cover the rain gauge. Also discusses SDR and mentions the rtl_433 tool.
This blog post looks like rtl_433 supports the Acurite 896 decode natively, so if the protocol is similar or the same it may be simple.
RTL Software Defined Radio – at Amazon – seems like it’s probably a decent model, some good reviews. Looks like there’s a little more to it than just “buy this and set up the software”.
Bought a cheap receiver off of eBay from Hong Kong for $7.31 (original listing).
Also, here was an Instructable about making a cheap combination RF/Bluetooth/433 MHz remote using an Arduino.
Additional Links
- http://www.instructables.com/id/Arduino-Frequency-Detection/
- Frequency detection on Arduino
- http://www.instructables.com/id/RF-315433-MHz-Transmitter-receiver-Module-and-Ardu/
- 434 MHz transmitter/receiver on Arduino
- http://www.princetronics.com/how-to-read-433-mhz-codes-w-raspberry-pi-433-mhz-receiver/
- 433 MHz receiver on Raspberry Pi
- Did this 10-Oct-2018 with an ESP8266-12E, and it worked well in receiving from a Spigen 433MHz doorbell transmitter. Only minor change was configuring “mySwitch.enableReceive(4)” instead of 0 for use with pin marked D2 on the ESP. Range was only a few feet with the receiver I was using, though I wonder a bit if using the “ReceiveDemo_advanced” would improve things at all. Need to play with this more
- https://hackaday.io/project/63004-esp433-wifi-to-433mhz-bridge
- 433 MHz with an ESP8266… not complete though.
- https://www.instructables.com/id/Using-an-ESP8266-to-Control-Mains-Sockets-Using-43/
- Another partial guide on the ESP, would need to determine how to wire up the receiver for the ReceiveDemo, but otherwise this could be pretty useful for supported protocols.
June 15, 2015
The Largest List of Brewing Hops | MoreBeer
https://www.morebeer.com/articles/homebrew_beer_hops
Pretty comprehensive post.
March 30, 2015
How To Use Vagrant To Create Small Virtual Test Lab on a Linux / OS X / MS-Windows
http://www.cyberciti.biz/cloud-computing/use-vagrant-to-create-small-virtual-lab-on-linux-osx/
Good step through on a Vagrant setup.
January 23, 2015
Antenna Patterns and Their Meaning – Cisco
This was a good read, probably somewhere a little north of basic, but some very good and helpful detail. Not what I had been searching for, but well worth the pause to read before continuing to research good short-hop, high throughput antennas and the noise effects of horizontally and vertically polarized noise sources on oppositely polarized antennas.
September 25, 2014
Heating Elements
http://www.theelectricbrewery.com/heating-elements
Info on wiring for heating elements for brew kettles, along with links to build info using PIDs and SSRs for temperature control.
July 18, 2014
Some updated LXC networking, plus Linux network namespaces
Four very good articles I’ve encountered today regarding networking in Linux containers. This is a space that has blossomed and matured surprisingly quickly, and many of the frustrations I had previously encountered are gradually being solved.
I was initially researching veth’s and bridging a container network to the host network. I have a container inside a VirtualBox VM with a NAT network, and want to bridge the container so it retrieves an address from the VirtualBox NAT network. As I’ve dug into it further, this appears to actually be what’s happening, but I start to run into issues when I attempt to set up a port forward on the VirtualBox NAT to a service running within the LXC container.
A Brief Introduction to Linux Containers with LXC
http://blog.scottlowe.org/2013/11/25/a-brief-introduction-to-linux-containers-with-lxc/
Introducing Linux Network Namespaces
More interesting to me in the context of VRF lite a la Cisco than in the context of LXC, but definitely something I’ll be coming back to.
http://blog.scottlowe.org/2013/09/04/introducing-linux-network-namespaces/
Exploring LXC Networking
Gets into LXC testing using Vagrant, which is another tool I have been meaning to learn more about. Perhaps one of the most helpful articles in understanding just what I was encountering.
http://containerops.org/2013/11/19/lxc-networking/
Disposable Development Boxes: Linux Containers on VirtualBox
This was a second search as I started to look more into the issues getting the forwaring to work right. Egresss from the container seemed to work OK, I could ping Google and such, but I couldn’t seem to bring anything back in easily.
http://mike.teczno.com/notes/disposable-virtualbox-lxc-environments.html