Electronics and embedded engineer Jana Marie Hemsing has designed a customized set of LED spotlights with further colour channels over the standard purple, inexperienced, blue, and white, permitting for finer-grained management over their colour rendering index (CRI): the LÄMP-Panel.
“Being in want for some colourful gentle for my room I designed some RGBY + W [Red, Green, Blue, Yellow plus White] spots some time in the past. They function Zigbee and match proper into my present ecosystem (Philips Hue),” Hemsing writes of the flat-panel lamps. “I like the additional yellow channel, this was tremendous essential to me, I’ve enormous aversion for blended yellow.”
The LÄMP-Panel is an open-hardware multi-color LED spot, designed with residence autoamtion integration firmly in thoughts. (📷: Jana Marie Hemsing)
The hexagonal lamps are constructed round SK6812 surface-mount LEDs, however in an uncommon combine. A typical single-color LED lamp will use warm-white or cold-white LEDs, typically mixing the 2 to permit for finer management over colour temperature; a full-color lamp will both use purple, inexperienced, and blue LEDs or add a white channel to the combo to make up for the lack to combine true white with RGB LEDs. Hemsing’s panels, although, embody 4 colours – purple, inexperienced, blue, and yellow — plus two white channels.
“The 4 colour + 2 white channels will be [achieved] by combining RGB and WWCWA (warm-white, cold-white, amber) SK6812 LEDs,” Hemsing explains. “This additionally permits rising the CRI [Color Rendering Index, a measurement of how far away artificially-lit objects’ perceived color is from their appearance under direct natural sunlight] by e.g. including inexperienced to the white channels.”
The open-hardware design makes use of a pair of PCBs with a 3D-printed spacer and tripod mount. (📷: Jana Marie Hemsing)
The mission comes as a spin-off from Hemsing’s LÄMP-Prism, a bigger ornamental lamp constructed from 9 interlocking PCBs and 291 LEDs; the LÄMP-Panel, in contrast, is a less complicated affair, constructed round an Espressif ESP32 microcontroller and a Chengdu Ebyte E75-2G4M20S Zigbee transceiver.
Hemsing has revealed the design recordsdata and supply code for the mission on GitHub beneath the CERN Open {Hardware} License Model 2 — Strongly Reciprocal.
