5 to 30 Dollar Security DVR If you use a raspberry pi Zero they are running 5 bucks + old web cam. Not a bad deal for a DVR. At this time all the software is free. Links below: ccrisan/motioneyeos http://github.com/ccrisan/motioneyeos Wiki http://github.com/ccrisan/motioneyeos/wiki Down load http://github.com/ccrisan/motioneyeos/wiki/Supported-Devices Installation http://github.com/ccrisan/motioneyeos/wiki/Installation Amazon for the hardware : http://amzn.to/1W0uBt7 Just get any Raspberry pi .. Pi zero is 5 bucks when in stock. …
Radio
Baofeng Radio TNC Packet Radio cable
I hade to make the Baofeng radio to TNC /Sound Card cable because the Baofeng is designed to key up the radio when the Grounds of the Speaker and microphone are shorted. This presented a problem when using a USB sound card for a interface. the universal ground what shorting the two leads. so we need to make a ground loop isolator and set the radio to VOX. not…
Homebrew Temporary lightning arrestor
In the past I have just used spark plugs too. How it works: Once the air has ionized, it becomes a conductor. And the dielectric breakdown of the air makes it a conductor and will pass the static charge/lightning strike to ground. Its kind of a one shot deal and it’s better than nothing. Its mostly for the static build up on the wire in the storm. Sharpened…
How to Solder copper wire to aluminum foil.
How to Solder copper wire to aluminum foil. I will be making some disposable variable capacitors later today for some magnetic loop antennas. This is also a useful technique to solder copper braid to an antenna. I think you can use any oil. the important thing to remember is keeping Oxygen form the foil. You don’t want it to oxidize before you get the solder down.
Emergency Ham Radio Station
It’s indoor and stealth good for getting info when the power is out or a natural disaster has happened. Stealth Antenna is good when you can’t set one up outside.
Improvised DIY diode ( over complicated )
Building your own diodes During World War I, soldiers in the field made their own radios to listen to programs for entertainment and news. They had access to wire from broken down vehicles, and telephone receivers, but they did not have modern solid state diodes in little glass tubes. However, it is surprising to find out just how many ordinary objects can act as a diode, letting current flow one…
Bitcoin is Money That can now Be transmitted through HAM Radio using Kryptoradio
http://kryptoradio.koodilehto.fi/ I really don’t know anything about BitCoin. This seems kind of neat. Part of amateur radio is that no transmission may be encrypted except radio control craft. Are they circumventing this rule? I though long and hard about this. Encryption is only allowed in radio control of models or from the control station of a satellite. This is not really encrypting communications so I doubt it would be against…