Hilo90mhz

My First Atomic Clock – Rubidium Frequency Standard

IMG_20160818_230937

http://en.wikipedia.org/wiki/Rubidium_standard “A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine transition of electrons inrubidium-87 atoms is used to control the output frequency. It is the most inexpensive, compact, and widely used type of atomic clock, used to control the frequency of television stations, cell phone base stations, in…

Remote Power Monitoring system AC or DC current measurements

3_phase

Links to realtime graphs from Thingspeak: Current Monitor <iframe width=”300″ height=”360″ style=”border: 1px solid #cccccc;” width:100=”” src=”https://thingspeak.com/channels/101562/charts/6?bgcolor=%23ffffff&amp;color=%23d62020&amp;days=2&amp;dynamic=true&amp;title=9000BTU+Split+AC+Garage&amp;type=line&amp;xaxis=Time+%282+days+full+scale%29&amp;yaxis=Amps(120V)&amp;width=1600&amp;height=360″></iframe> Uptime <iframe width=”300″ height=”360″ style=”border: 1px solid #cccccc;” src=”https://thingspeak.com/channels/101562/charts/3?bgcolor=%23ffffff&amp;color=%23d62020&amp;days=2&amp;dynamic=true&amp;title=BreadBoard+Uptime&amp;type=line&amp;xaxis=Time+%282+days+full+scale%29&amp;yaxis=minutes+online&amp;width=1600&amp;height=360″></iframe> Cloud IOT Hosting / Storage Options Looked at in initial exploration of subject: Example: http://www.openhomeautomation.net/cloud-temperature-logger-esp8266/ Github for above project: http://github.com/openhomeautomation/esp8266-cloud http://dweet.io/ http://www.freeboard.io/ http://bsautner.github.io/com.nimbits/ – Desinged to be installed on local hardware like raspberry…

LED Poi Links

  https://learn.adafruit.com/supernova-poi?view=all# https://github.com/adafruit/Kinetic_POV   inner PC tube 16.21mm OD 12.88 ID – cut to 157mm long – cut notch in side for wires to exit outer PC tube 25.9mm OD 22mm ID cut to 28cm – end with cap should be cut straight – holes for end cap drilled after fully assembled

Flysky I6 Transmitter adding additional 10 channel mod

Flysky I6

3/8/2016: Updated links: Firmware and info: https://github.com/benb0jangles/FlySky-i6-Mod- Thread with discussion: http://www.rcgroups.com/forums/showthread.php?t=2486545&highlight=v1.5 Internal Voltage Sensor Mod: http://www.rcgroups.com/forums/showthread.php?t=2402288   Important!: Binding must be done through hidden menu with new firmware Hold down both sticks bottom left corner while turning on remote Use bind function. Short the B pin to ground on receiver before it is turned on. Binding should be…

Apache server-status – Allow localhost only

To prevent wordpress from trying to serve the server-status page local .htaccess file : # BEGIN WordPress RewriteEngine On RewriteBase / RewriteRule ^index\.php$ – [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # rewrite rule for server-status to prevent 404 error RewriteCond %{REQUEST_URI} !=/server-status RewriteRule . /index.php [L] # END WordPress To enable local access in…