# Use pixelblaze to control CCT led AND adressable RGB? **URL:** \ **Category:** Ideas and Tips\ **Created:** [February 22, 2024, 12:20pm UTC](https://forum.electromage.com/t/use-pixelblaze-to-control-cct-led-and-adressable-rgb/3430 "2024-02-22T12:20:18Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![hololit](https://forum.electromage.com/letter_avatar_proxy/v4/letter/h/5daacb/32.png) [@hololit](https://forum.electromage.com/u/hololit)\ **Post date:** [February 22, 2024, 12:20pm UTC](https://forum.electromage.com/t/use-pixelblaze-to-control-cct-led-and-adressable-rgb/3430/1 "2024-02-22T12:20:18Z")
I have equipped a floor lamp for my living room with SK6812 RGBW 144 LED/m recently. The reasons for this choice are: - High density: adressable effects look smoother - W: white LED allow me to use it as a normal lamp to lighten my living room properly (higher CRI than only RGB set to white) However I run in some problems: - 5V only = high temperature: this adressable density with white LED can only be found in 5V format, which means over 5A per cable (i have very limited space). A workaround would be to use these new [COB 24V RGBW](https://www.aliexpress.com/item/1005005997509613.html?spm=a2g0o.store_pc_allItems_or_groupList.0.0.72484cfckXCuG5&pdp_npi=4%40dis%21THB%21THB%20443.70%21THB%20332.68%21%21%2111.99%218.99%21%402141112417086026656808750efb9d%2112000035234229869%21sh%21TH%212256525617%21), but it means the adressable segments are 50-80mm long depending of supplier, which destroys the “smoothness” of animations like “Fireflies”, “KITT” or anything with movement. Same for non COB strips, i can find 12V or 24V RGBW but with 60 led/m max - Max luminosity at full white: it is simply nowhere as bright as “normal” white LED strips, even in 144 led/m - I have doubts about the actual CRI with white LED in this 5050 format Since I don’t need the high CRI “white” mode to be adressable (it’s used only in static mode, and I can accept white RGB for “effects”), i was thinking of running a [CCT strip](https://www.aliexpress.com/item/1005001614814078.html?spm=a2g0o.store_pc_allItems_or_groupList.0.0.48734cfcEhdyWF&pdp_npi=4%40dis%21THB%21THB%20295.31%21THB%20147.66%21%21%217.98%213.99%21%402101585f17086016110952778ed818%2112000032245375049%21sh%21TH%212256525617%21) instead of only white strip next to a classic RGB SPI strip. But how to control the CCT strip ? Can i use a converter “digital to analogue” ? The ones i’ve found seems to convert SPI to RGBW at best (considering it as “one pixel”), but i haven’t found data for CCT control. Can I for example connect NW and WW of the CCT to R and G for example and send a pixel like this from the Pixelblaze ? I might be looking at something difficult… I found some [2805 RGBCCT](https://www.aliexpress.com/item/1005006385278378.html?spm=a2g0o.productlist.main.13.2fd757011oE1OY&algo_pvid=0c62fbaf-ba2b-4210-a442-42cad64bc7e2&algo_exp_id=0c62fbaf-ba2b-4210-a442-42cad64bc7e2-6&pdp_npi=4%40dis%21THB%21504.76%21252.38%21%21%2113.64%216.82%21%402101eeda17086041843648110e7faa%2112000037728776952%21sea%21TH%212256525617%21&curPageLogUid=Q6OMhMgtVZeU&utparam-url=scene%3Asearch%7Cquery_from%3A) led strips allowing all at once, but none of them go above 60 LED/m, which is far from enough: i’d need double at least. Should I simply abandon and go with the SK6812 RGBW even though I have to deal with 5V ? Thank you ---
**Author:** ![sorceror](https://forum.electromage.com/user_avatar/forum.electromage.com/sorceror/32/735_2.png) [@sorceror](https://forum.electromage.com/u/sorceror)\ **Post date:** [February 22, 2024, 12:56pm UTC](https://forum.electromage.com/t/use-pixelblaze-to-control-cct-led-and-adressable-rgb/3430/2 "2024-02-22T12:56:10Z")
I want to know, too! I’m thinking of attaching some ws2812 (or whatever) chips to … lasers! ---
**Author:** ![Petros](https://forum.electromage.com/letter_avatar_proxy/v4/letter/p/f05b48/32.png) [@Petros](https://forum.electromage.com/u/Petros)\ **Post date:** [February 22, 2024, 1:13pm UTC](https://forum.electromage.com/t/use-pixelblaze-to-control-cct-led-and-adressable-rgb/3430/3 "2024-02-22T13:13:55Z")
Could you use one of [these](https://shop.electromage.com/products/ws2811-breakout-for-discrete-leds-pack-of-10)? PB would see it as 1 pixel, and then you could connect it in series and add some code for that 1 pixel to control its brightness. If you don’t care about having both strips on at the same time, then it would be separate patterns for each and would simplify things a lot. ---
**Author:** ![hololit](https://forum.electromage.com/letter_avatar_proxy/v4/letter/h/5daacb/32.png) [@hololit](https://forum.electromage.com/u/hololit)\ **Post date:** [February 22, 2024, 1:18pm UTC](https://forum.electromage.com/t/use-pixelblaze-to-control-cct-led-and-adressable-rgb/3430/4 "2024-02-22T13:18:00Z")
Maybe, but that’s my question: do you think connecting 1 color channel to CW and 1 color channel to WW would light it up properly ? I guess ordering and testing is a solution, but I’d rather avoid it if anyone has experience on this (I’m far from the US). ---
**Author:** ![wizard](https://forum.electromage.com/user_avatar/forum.electromage.com/wizard/32/4_2.png) [@wizard](https://forum.electromage.com/u/wizard)\ **Post date:** [February 22, 2024, 5:34pm UTC](https://forum.electromage.com/t/use-pixelblaze-to-control-cct-led-and-adressable-rgb/3430/5 "2024-02-22T17:34:39Z")
It’s possible to use a ws2811 IC to drive high power mosfets that can then drive analog led strips. There are a few boards out there that do this. I’ve seen some on tindie and Adafruit is working on one. ---
**Author:** ![hololit](https://forum.electromage.com/letter_avatar_proxy/v4/letter/h/5daacb/32.png) [@hololit](https://forum.electromage.com/u/hololit)\ **Post date:** [February 22, 2024, 6:00pm UTC](https://forum.electromage.com/t/use-pixelblaze-to-control-cct-led-and-adressable-rgb/3430/6 "2024-02-22T18:00:09Z")
Oh so it means there is high power going through WW and CW, it’s not just control on top of the 24V pin… That complexifies quite a lot my electronics, but thank you, if i find myself in situations where the 5V strip does not work…