Saturday 21 November 2015

DIY Weather Station data plotting improvements


Remote control made easy

I'm going to change this UDP Relay into Web Relay. There is nothing wrong with this unit but the latter one comes with built-in GUI in addition to iPhone app and command line interface.

KMTronic 8-channel UDP Relay:

iPhone app:

DIY bash control script:



Tuesday 17 November 2015

Playing guitar?

These are Speakon connectors used by rock bands ;-) Originally designed to connect audio cables but can also be used to connect low power DC cables. My aim is to test them as reliable quick release connectors in outdoor use.






Saturday 14 November 2015

Heavy Duty Relay

This is the latest addition into my ever growing family of astronomy relays. I already have got commercial 8-channel UDP relay, 8-channel Web relay, 4 port IP relay and DIY 4 channel Arduino relay shield. This is basically Arduino relay shield with some hardware modifications to enable serial re-connects and even to survive host computer reboots without resetting states of the ports. This relay will control heating devices etc.

Connectors are standard male and female DC plugs:

Connectors close-up:

The enclosure (waterproof is little bit overkill here):

The whole beast:

Control program which I wrote based on skeleton I found: