DavidEF
July 26, 2018, 6:42pm
501
Benik3:
Hello.
Thank you
So, you want BOTH a driver without MCU AND a MCU without driver?
vinte77
July 26, 2018, 7:05pm
502
No the tailcap on the Manta Ray is not compatible with Convoy threads, since the it’s sized for 26650 batteries. It’s only the bezels that are interchangeable. The MR is pretty hefty and has a lot of meat on it to help with heat sinking as well. When I was drilling the center hole on the shelf I was pleasantly surprised at how long it took me to drill through, the shelf is very thick. I’m a big fan of the host.
led4power
July 26, 2018, 7:04pm
503
Benik3:
Hello. Isn’t possible to buy the LD-B4 but without the CPU? I’m thinking about modding one of my FL, but I would like to use my own MCU (because of other stuffs) so I just need to “convert” PWM to analogue FET drive. If I got it right, this is what the SOT-23-5 IC on your driver do. Or if isn’t possible to buy just these ICs (because I would like also my own PCB with the MCU because of the space so I would use only the IC anyway). Thank you
In theory it's possible,you need PWM signal from your CPU/MCU, driver will provide constant current,but everything else (modes,LVP,OTP protections,UI...) must be done by your MCU.
led4power
July 26, 2018, 7:06pm
504
vinte77:
No the tailcap on the Manta Ray is not compatible with Convoy threads, since the it’s sized for 26650 batteries. It’s only the bezels that are interchangeable. The MR is pretty hefty and has a lot of meat on it to help with heat sinking as well. When I was drilling the center hole on the shelf I was pleasantly surprised at how long it took me to drill through, the shelf is very thick. I’m a big fan of the host.
I meant switch PCB size and switch hole threads, could you check?
klrman
July 26, 2018, 7:16pm
505
You have some nice products there led4power, will be ordering some soon.
led4power
July 26, 2018, 7:46pm
507
Added new copper DTP boards:
https://led4power.com/product-category/mcpcbs/copper-dtp/
Price for 16mm DTP pcbs:
1pc - 1,07€
50pcs - 0.95€
100pcs - 0.8€
Price for 20mm DTP pcbs:
1pc - 1,17€
50pcs - 1.0€
100pcs - 0.9€
Price for 20mm 3XP and 4XP DTP pcbs:
1pc - 1,37€
50pcs - 1,2€
100pcs - 1.1€
If you want to buy 50+pcs, please contact me so I can give you coupon code, currently page doesn't automatically calculate discount.
Benik3
July 26, 2018, 8:08pm
508
Nope, you got it wrong. I want the driver without MCU (PIC). The IC is the SOT-23-5 chip which “convert” PWM to linear drive.
led4power:
In theory it’s possible,you need PWM signal from your CPU/MCU, driver will provide constant current,but everything else (modes,LVP,OTP protections,UI…) must be done by your MCU.
Yes, that’s exactly what I want
vinte77
July 26, 2018, 8:15pm
509
Ok, I will check tonight after work.
DavidEF
July 26, 2018, 9:03pm
510
Benik3:
Nope, you got it wrong. I want the driver without MCU (PIC). The IC is the SOT-23-5 chip which “convert” PWM to linear drive.
led4power:
In theory it’s possible,you need PWM signal from your CPU/MCU, driver will provide constant current,but everything else (modes,LVP,OTP protections,UI…) must be done by your MCU.
Yes, that’s exactly what I want
Yep, I definitely read it wrong. :person_facepalming:
led4power
July 27, 2018, 6:33pm
511
Did you maybe check it? I just bought one MR C8.2 host,looks interesting enough for extreme power.
What is currently the best 26650 cell for high discharge (25-40A)?
vinte77
July 27, 2018, 6:43pm
512
I wasn’t able to check last night, but I will definitely check today when I get home. As for batteries, I use Liitokala and Shockli. Here are tests of the cells:
LiitoKala INR26650-50A 5000mAh (Black)
[image]
Official specifications:
Nominal Capacity: 5000mah(4900-5000mah)
Nominal Voltage: 3.7V
Weight: 95g±1g
Rechargeable Battery: Yes
Rechargeable Times: Up to 500 times
internal resistance: <20mOhm
Limited Charge Voltage: 4.2v
Working Voltage: 2.75-4.2V
Size: 65.5mm x 26.5mm (Diameter)
Place of Origin: China HongKong
[image]
LiitoKala has updated the wrapper for their battery, is the battery inside still the sa…
Shockli IMR26650 5500mAh (Black) 2017
[image]
Official specifications:
Nominal voltage: 3.7V
Nominal capacity: 5500mAh
Charge voltage: 4.20V +/-0.5V
Standard charge current: 0.5A
Maximum Charge current: 2A
Maximum continuous discharge: 20A
Maximum pulse discharge: 30A
[image]
A high current and high capacity 26650 cell.
[image] [image]
[image] [image]
[image]
[image]
[image]
The two cells are very well matched and as…
I assume the PLB 55A cell, e.g. Keeppower 6.000mAh or Shockli 5.500mAh should be the best high drain cell for 26650 size.
vinte77
July 27, 2018, 6:53pm
514
I thought KP wasn’t a high drain cell.
contactcr
July 27, 2018, 7:26pm
515
Vapcell/Aspire/iJoy/Golisi 4200-4300
led4power
July 27, 2018, 7:49pm
516
That table is great,only internal resistance is missing for complete information.
What is best reliable source (China or EU) for Vapcell/Aspire/iJoy/Golisi 4200-4300?
contactcr
July 27, 2018, 8:51pm
517
led4power:
That table is great,only internal resistance is missing for complete information.
What is best reliable source (China or EU) for Vapcell/Aspire/iJoy/Golisi 4200-4300?
I think both Banggood and Gearbest sell Golisi though I have never ordered a 26650 from either site, only US vendors.
vinte77
July 27, 2018, 8:54pm
518
I saw that lion wholesale is having a clearance sale on the Aspire 26650 for $6.99 per cell for those of you who are in the US.
This one is the best 26650 for basically every application.
For maximum current the Samsung 30T (21700) might be a little bit better, but is has a much lower capacity.
vinte77
July 27, 2018, 9:34pm
520
Ok, I misunderstood I was thinking of the older KP batteries. So the KP 6,000 mah is the same as the Shockli 5,500 mah cells.
