bigtreetech skr mini e3 v2.0 control board 32bit new upgrade for creality ender 3, with tft35 e3 v3.0 graphic smart display controller board 3d printer parts bigtreetech <b>if you encounter any problems, please contact us via amazon as soon as possible. we have professional technical after-sales personnel to solve your problems.</b><br> <b>tft35 e3 v3.0 product characters:</b> <br><br> 1)use the light-emitting encoder, press the bright blue light, if not, it will not light, full of technology; <br><br> 2)tft touch screen mode:serial port screen rs232 port; <br><br> 3)2 sets of uart serial port extension ports are reserved for diy use.<br><br> <b>skr mini e3 v2.0 upgrade features:</b><br><br> carries highly modular open source firmware marlin 2.0, which facilitates user diy and secondary development;<br><br> use mp1584en power chip, support 12-24v power input, the maximum output current can reach 2.5a; <br><br> the hot bed mos tube uses wsk220n04, low on-resistance, larger heat dissipation area, and reduce heat generation; <br><br> onboard sensorless homing function, which can be used by plugging in the jump cap; <br><br> optimize the plate and frame to avoid the phenomenon of screw hole gap and screws hitting components; <br><br> support bltouch, filament detection, power-off resume, automatic shutdown, etc.; <br><br> onboard eeprom: at24c32; add parallel double z-axis interface; <br><br> increase the board layer to 4 layer board; and increase the heat dissipation area of the back driver and strengthen the heat dissipation capacity; <br><br> increase the distance between the driving chip and the components to avoid the trouble caused by the heat sink; <br><br> the driver shares a physical uart port, which saves io and enhances stability; <br><br> two cnc fan interfaces; and 5v power supply with bltouch, tft and rgb interfaces is optional; <br><br> <b>note: please contact us when you need firmware information or a manual.</b>