My Projects electronic:equipment:timer http://www.projects.scorchingbay.nz/dokuwiki/ 2026-04-06T05:10:07+12:00 My Projects http://www.projects.scorchingbay.nz/dokuwiki/ http://www.projects.scorchingbay.nz/dokuwiki/_media//favicon.ico text/html 2024-04-04T21:57:55+12:00 electronic:equipment:timer:co1605 http://www.projects.scorchingbay.nz/dokuwiki/electronic/equipment/timer/co1605?rev=1712221075&do=diff [Holman CO1605 overview] Timer data TypeWaterModelCO1605ManufacturerHolmanDate2014 Operation The timer electronics controls a small electric motor which pushes a pin either in or out, depending on which way it turns. This pin is part of a pilot-operated solenoid type valve that switches the water flow on or off. If the motor turns clockwise (with normal power polarity, ie +ve to red), the pin is withdrawn, a drain is opened which relieves pressure on the diaphragm and water flows. If the … text/html 2024-03-21T08:50:54+12:00 electronic:equipment:timer:sidebar http://www.projects.scorchingbay.nz/dokuwiki/electronic/equipment/timer/sidebar?rev=1710964254&do=diff Tools * Holman CO1605 * Hose timer1 * Hose timer2 text/html 2024-03-11T22:16:20+12:00 electronic:equipment:timer:start http://www.projects.scorchingbay.nz/dokuwiki/electronic/equipment/timer/start?rev=1710148580&do=diff Overview Many timers, eg garden hose timers, contain electronics and actuators for controlling or switching things. Hardware description ---------- Home PageAbout this SiteCopyright QuestionsContact Us text/html 2024-03-21T22:16:23+12:00 electronic:equipment:timer:timer1 http://www.projects.scorchingbay.nz/dokuwiki/electronic/equipment/timer/timer1?rev=1711012583&do=diff [Timer overview] Timer data TypeWaterModel-Manufacturer-Date Same model as GroundWork Automatic Water Timer and GardenMate Automatic Tap Timer. Operation The timer electronics controls a small electric motor which turns a ball valve to let water flow. The motor turns clockwise (with normal power polarity, ie +ve to red), and the ball valve is fully open just before the cam driven micro-switch is triggered and closes the NO (normally open) contacts. As the motor continues to turn, the bal… text/html 2024-03-21T09:32:35+12:00 electronic:equipment:timer:timer2 http://www.projects.scorchingbay.nz/dokuwiki/electronic/equipment/timer/timer2?rev=1710966755&do=diff [Timer overview] Timer data TypeWaterModelunlabeledManufacturerunknownDate Presumably a generic Chinese made timer, nothing printed on the outside and I don't have the packaging. Operation The timer electronics controls Components Examples [Timer top] [Timer side] [Timer bottom]