LCD EMI Filter Board for SKR E3 Mini/Turbo and Creality V4.2.X Boards
$9.99
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Fixes issues with the LCD Encoder – Works with SKR E3 Mini, SKR E3 Turbo, Creality V4.2.2, and Creality V4.2.7 boards See below for video showing issue that this fixes Designed and assembled in the USA by TH3D
19 in stock
Description
Issue Details
Due to design of the E3 Mini/Turbo, V4.2.2, and V4.2.7 boards suffer from EMI on the LCD lines. This presents itself as if the LCD button is being pressed repeatedly or the feedrate on the LCD (the 100% changing) changing on its own. This is most common on the Ender 5 series machines. This is not a firmware issue; this is an issue with the board itself.
Help Center Article with more details: SKR E3 Mini, SKR E3 Turbo, Creality V4.2.2, and V4.2.7 LCD EMI Issue – TH3D Studio LLC
Installation
Simply plug the board onto the EXP3 Header on your LCD and then plug the LCD cable into our board as shown below. No firmware changes are needed.
Video of the Issue this board fixes
Reviews (3)
3 reviews for LCD EMI Filter Board for SKR E3 Mini/Turbo and Creality V4.2.X Boards
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Additional information
| Weight | 1 oz |
|---|---|
| Dimensions | 0.2 × 0.2 × 0.2 in |
| Made In | 🇺🇸 USA (with 🇺🇸 USA and 🌎 Global Materials) |
| Warranty Length | 6 Months |
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Brendan White –
Giving a 3 star as I am on the fence with this product. 3 chokes at the LCD end are not really doing a lot more than adding a ferrite bead to the LCD cable. Great if it works for you, all power, but I noticed no difference, and honestly out of my 10 ender printers, 5 with SKR boards, 5 with 4.2.2 Creality boards, I only had an issue with interference on 1 printer. So that’s 9 out of 10 that had no issues at all. I did try this add on, but it made no difference. I think most people that have issues with the display and encoder are going to have faulty mainboards more often than EMI issues.
My background is electronics engineering, and although the devices out of China are minimal with filtering, the Biqu (BigTreeTech) boards are actually well designed. Creality a little less so, but the issue of EMI is not as big as people make out
Tim Hoogland –
The things on the PCB are not “chokes”, they are pullup resistors – someone with electronics engineering background should know this. The issue these boards aim to fix are the encoder being pressed or increasing/decreasing as if you were turning the knob. This will NOT correct display corruption and it is not sold as fixing that issue. It is only meant to mitigate the encoder issue by pulling the lines up to 5V instead of them being left floating with just the boards internal pullup on those IO pins. Issues with LCD corruption are usually due to a 3.3V rail that is not at the correct voltage.
James M. (verified owner) –
The filter worked perfectly and solved my issue. After replacing the mainboard with the 4.2.7 unit, the LCD display would receive phantom button presses, as long as it was attached to the metal frame of the printer. Removing it from the frame and only having it attached to the wire did solve the issue but who wants that? The board was easy to install; simply plug and play, right on the back of the LCD board itself. The only minor gripe I have is, the aftermarket 3d printed lcd cover will no longer fit so I will have to come up with a different solution but this issue does not affect how well the product works.
Frank M. (verified owner) –
I tried the board, but it did not work, I sent you two emails about it. Could not tell it did anything. Thanks
Tim Hoogland –
Hi there Frank, that was because your control board had another issue – we sent this out as a test to you to see if it would fix anything. I remember we sent that to you to test. However, we did later find out the issue with the Ender 3 S1 Boards that was causing the LCD corruption you were getting.