Most everything I have, I have opened up to see how they do it. Been doing that since I was a kid. And this eBike stuff is no exception. The motor will get opened up in due time, for one reason or another. But there's already plenty of info of what I will find. But with the display, that is a minor mystery. Its pretty clear that it uses the same MCU and tech as what's in the motor controls. But there is always room for customization. So how do these open up? What's the magic word? Well I have opened up my Galaxy phones from the front and the back. And screen is held down with double sided tape that gets easier to peel open when the screen is heated. It is clear that these Bafang displays have no back to open, so removing the screen is how these things open up. I have already given it a first try and did not get even a hint of micro motion. Clearly these screens are glued down better than the Galaxy phones. So I looked around the internet for anybody else that has cracked this open, and so far nobody has. But I did find a video of a tour of the factory that actually makes these displays. Awesome it was. Here's the link.
The tour was very comprehensive and they mash the screen down with a sonic welder. After I saw that, I double checked to see if my screen was actually glass. If it was plastic, then this thing would have to be cut open. Alass, it was glass. So why sonic weld it? You cant weld plastic to glass. But you can instantly make the screen tape super sticky for a bond very difficult to peel off. And that's why my first attempt got nowhere. I was too gentle. But gentle for a reason. They could have potted this whole thing together or injection molded the case around the guts. You never know till you see behind the scenes. So I will definitely try again with more heat and more patience.
So why do I feel the need? Well, I need to change things up abit. The buttons need to be disconnected from the display for mounting inside my vault. So I either cut and splice from the outside, or solder a connector to the inside. On top of that, I would like for the display turn on circuit to be robust enough to turn on more than just the motor. Like turning on the second motor controller in my trailer. That way one set of controls will run both motors. So yup, I will do my best to open the display. Especially since its clear that its been taped down. Just have to get to the proper level of heat to gain the advantage. :)
The tour was very comprehensive and they mash the screen down with a sonic welder. After I saw that, I double checked to see if my screen was actually glass. If it was plastic, then this thing would have to be cut open. Alass, it was glass. So why sonic weld it? You cant weld plastic to glass. But you can instantly make the screen tape super sticky for a bond very difficult to peel off. And that's why my first attempt got nowhere. I was too gentle. But gentle for a reason. They could have potted this whole thing together or injection molded the case around the guts. You never know till you see behind the scenes. So I will definitely try again with more heat and more patience.
So why do I feel the need? Well, I need to change things up abit. The buttons need to be disconnected from the display for mounting inside my vault. So I either cut and splice from the outside, or solder a connector to the inside. On top of that, I would like for the display turn on circuit to be robust enough to turn on more than just the motor. Like turning on the second motor controller in my trailer. That way one set of controls will run both motors. So yup, I will do my best to open the display. Especially since its clear that its been taped down. Just have to get to the proper level of heat to gain the advantage. :)
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