The YiHi SX350 35W Chip at Varitube
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Can I ask a confirming question please.
The 350j board will do 60w with temp control in single battery mode or parallel battery mode. (4.2v)
In SERIES dual battery mode (8.4v) it will go to 120w but NO TEMP CONTROL. Is that correct?
And last, I'm not a fan of the sx mini form factor (yeah I know, everybody else in the world loves it) are there any other 350j mods or maybe enclosures (for builders) available people could recommend or link to?
Many thanks for the anticipated responses.
The 350j board will do 60w with temp control in single battery mode or parallel battery mode. (4.2v)
In SERIES dual battery mode (8.4v) it will go to 120w but NO TEMP CONTROL. Is that correct?
And last, I'm not a fan of the sx mini form factor (yeah I know, everybody else in the world loves it) are there any other 350j mods or maybe enclosures (for builders) available people could recommend or link to?
Many thanks for the anticipated responses.
Single battery is 3.7 v and dual battery is 7.4v
What form factor are you referring too?
Sent from The Truck O Shop
My guess is that they'll update the firmware for more J's sooner or later.
For a different form factor I've seen this on reddit today. But looks like a pretty tight fit in a Hammond 1550P box.
Apropos form factor, what happened to the other yihi chip with the giant colored oled screen that got mentioned a while back ago?
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I love that box, I actually have a 1550p powder coated box, uncut, waiting for a project. Is anyone selling that box with the holes cut?
Actually the 350J chip will only go as high as 50J in TC mode no matter what the battery configuration. 120W with 2 batteries in series in wattage mode.
My experience is it cuts off at 3.3v. But encourage others to chime in here.
The SXmini won't let you fire below 3.30V, but it has to get below 3.30V for that to happen. If you have 3.31V, it will let you fire, but once you go below 3.30V it drops the power but continues firing. You can, and will, get below 3.30V regularly. If you need a hard cutoff at 3.30V, don't rely on this - it's meant for 18650 cells which are fine down to 2.5V really.
Are you considering voltage drop and current draw? Depending on the current you're drawing at the time, there is significant voltage drop on an 18650. If you fire at 3.30V, it could be as much as 0.5V - I've seen it in the display. YiHi recommends a 20A (SX350mini) or 25A (SX350J) battery for good reason. A regulated mod draws more and more current the lower the battery voltage. I calculated the SX350mini to draw 20A at 60W at 3.30V left on the battery, based on YiHi's reported efficiency. That's why they recommend at least a 20A battery...
Its going to handle it fine. Its going to sense the higher input voltage and switch it to 120W in Power mode.....it doesn;t care what kind of battery and how many....its based on the input voltage only. Plenty of folks are running Lipos on the regular mini board.
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I've got a few SX350 mini and SX350 100W mods floating around. You need to be vigilant when using LiPo cells in series. From my experience, they read the batteries' voltage about .6-.8v high on 2S packs. I don't suggest letting them fall below 7.4v on the chip's display. LiPo's generally should not be discharged below 3.6v per cell. I hope this helps.
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Uggh... I could deal with the SX350 mini chip having board-mounted buttons, but dealing with the glue/epoxy on top of it and it's just an effing mess. Complicates my box build exponentially. And the USB being crooked as **** is just salting the wounds.
So did we confirm for certain that those 4 pads on the side of the board aren't for our own button relocation?
So did we confirm for certain that those 4 pads on the side of the board aren't for our own button relocation?
What about the solder points on the edge of the board can they be used for up down switches? Anyone? What does YIHI say about them.
Im not too happy with all the EPOXY!!!! or the bent at an angle USB either.
It will be all good though if we can use those pads on the board edge...
Im not too happy with all the EPOXY!!!! or the bent at an angle USB either.
It will be all good though if we can use those pads on the board edge...
Update:
Good news folks....YiHi tells me they can open up those 4 solder points to use with the switches. Software update coming for it....remember we went through this with the original 35w chip so I asked if they could do the same here
They say yes and will for us in May! eeeeeeeeeeeeeeee...LOL. Stay tuned as always and if something changes I always report it here....just been quiet with all the mod stuff.
Good news folks....YiHi tells me they can open up those 4 solder points to use with the switches. Software update coming for it....remember we went through this with the original 35w chip so I asked if they could do the same here
They say yes and will for us in May! eeeeeeeeeeeeeeee...LOL. Stay tuned as always and if something changes I always report it here....just been quiet with all the mod stuff.
Update:
Good news folks....YiHi tells me they can open up those 4 solder points to use with the switches. Software update coming for it....remember we went through this with the original 35w chip so I asked if they could do the same here
Thanks for following up with YiHi on this. This will make this board so much more "friendly" to many mod designs.
Update:
Good news folks....YiHi tells me they can open up those 4 solder points to use with the switches. Software update coming for it....remember we went through this with the original 35w chip so I asked if they could do the same here
YESSSSS!!!!! So glad they can do it with software....
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