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DALI touch panel schedules and short addresses
The HL-TPS-D-WT commands one DALI short address, one group, or the whole bus. The timer and the schedule belong to the panel. A driver does not keep the time of day.
Read moreHow we state watts per metre on an LED strip
15 W per metre is the most a short length of the Premium 528 can draw. A 5 metre reel fed only at both ends measured 12.48 W per metre. This note explains that reading, the Cut Anywhere strip, and why fewer watts can still be the same light.
Read moreTunable white LED strip for a television set
An indoor television set needed 15 metres of white light that could be warmed or cooled, with no flicker on an HD camera. This note shows the strip, the driver and the DMX512 decoders for that run.
Read moreHow to mount an IP67 or IP68 silicone-sleeve LED strip
Why the factory tape lets go of a silicone sleeve, and how to mount the strip with DOWSIL 7091. Peel the liner first. Seal the ends with the 45 g tube. Use clips on a long, wet or overhead run.
Read moreWhere to cut an IP68 LED strip
The silicone jacket hides the cut marks. Hold the strip to a good light and cut only on the copper pads. A cut between the pads leaves a short dark end, shorter than one cut section.
Read moreJoin a tunable white LED strip to Alexa with Zigbee
The Zigbee CCT controller does not use the Wi-Fi router. An Echo with a Zigbee radio, such as an Echo Plus, finds it after five presses of RESET NET. Name the light, then save warm and cool as routines.
Read moreCommon anode current on colour-changing LED strip
The watts per metre on an RGB, RGBW, tunable-white or RGB+CCT strip are the total for every channel together. The black common anode carries that whole current. Connector length and feeder size are set by that one wire.
Read moreWall-switch pixel lighting for a 10 m ceiling — a simple DIY case study
A 10 m WS2811 ceiling that fills from one end and stays on from a 240 V wall switch, using a ready-programmed PIR SPI controller. The same puck also works as a simple PIR stair light with a hold time. Parts: 10 m tape, 100 W IP67 driver, or indoor IP20 EC.
Read moreCommon-core current, connectors and voltage drop on 3- to 6-core LED ribbon
Connectors are not universal: poles, 24/22/20 AWG and strip width all have to match. On 3- to 6-core CCT, RGB, RGBW and RGB+CCT tape the shared positive carries the whole load. Size that common core, the voltage drop and the driver from all channels on — and put those figures on the drawing.
Read moreHow to size a 24V driver for RGBW PWM lighting
The labelled watts on RGBW PWM lamps and strips are nominal. All four channels on, especially once warm, is the real load. 20% spare is the minimum; around 50% is what we use on this type of ceiling install. Worked example: the 6W MR16 spotlight.
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