DS Buster

DS Buster is DIY dew heater controller based on Arduino UNO microcontroller, DS18B20 temperature sensors and 4-channel MOSFET PCB driven by PWM. In manual mode one can control output power of each four channels (P1-P4) separately. In automatic mode output power is controlled based on temperature sensor readings (still ongoing project).

Problem solver

I favor EXSYS and StarTech industrial grade powered hubs with external power exclusively. EXSYS operation mode defaults to that but in case of StarTech you have to open the case and remove one jumper on PCB.

Web Relay First Light

Web page control over LAN, WLAN or Internet:

 iPhone app control over WLAN or Internet:

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:

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.

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: