Lighting Homemade Chinese 2x 50w Cobs for £27/$35

[Ripper]

@Ripper can this thread be moved to LED DIY?

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Done..

 

[MickJ]

Done..

Thanks

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[sboiter88]

Ok so having made one light I thought I would try the double [emoji16] I went a bit fancier on the heatsink at £7 each ($10). 50 watt Foxanon 50 w 4000k cobs at £1.60 each and a 100 watt Chinese driver £6 wired up in parallel. Total cost about £27 with wire, couplers and thermal paste or $35 depending on your side of the pond. My soldering is getting good too [emoji39] Hanging them tomorrow. Heatsinks and cobs from Alibaba -took 1 week for heatsink and 2 weeks for cob delivery. Driver was from eBay and took a week to arrive. I could have used citizen cobs for an extra £16/$20 but wanted super cheap to see what they will do. I bought spares in case they don't last. It will take me 10 minutes to change them out including soldering. I could have gone fancier on the hanging wire but the plants don't care.

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Nice. How are the plants coming along?

How many cobs do you run off of a dingle driver?
Would you happen to have any links or resources a person that isn't familiar with diy cobs can access?

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[KonopCh]

Those COBs are not worth the time and money. Also you can get more efficient driver, MW drivers are up to 95%.

 

[MickJ]

Those COBs are not worth the time and money. Also you can get more efficient driver, MW drivers are up to 95%.

It's just a fun project, mean well are more efficient and citizen cobs are better. Just wanted to see what they could do if you are on a really tight budget. Plants seem to like them.

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[MickJ]

It's really simple to do, just solder wires to cobs and then wire up. A 100w driver will run two 50w cobs in parallel.

Nice. How are the plants coming along?

How many cobs do you run off of a dingle driver?
Would you happen to have any links or resources a person that isn't familiar with diy cobs can access?

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[hecno]

Great stuff mate ,

 

[KonopCh]

It's just a fun project, mean well are more efficient and citizen cobs are better. Just wanted to see what they could do if you are on a really tight budget. Plants seem to like them.

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Understood.
But don't forget better COBs, like Cree, Vero or strips or boards (up to 212 lumens per watt).
I don't think those yours are more than 110 lumens per watt.

 

[F.N.]

What a great job of making a cob for very little money. That looks bright I can hardly wait to see them in action.

 

[MickJ]

So here is a one week comparison. Prior to light it stretched so I topped at 3rd node. This day 23 compared to day 30 on an MSNL White Cheese.
Before

After

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