Jaroslav Müller
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CJMCU 61 Bit WS2812 5050 RGB LED Driver Development Board
US$5.99 US$16.99

Q: I'm new at this. I guess all 5V and all Gnd connections need to be soldered together. You also have to solder the DO (digital out) connection of a ring to the DI (digital in) of the nextjQuery111308277786757960712_1644798969840 Am I right? Then on the outer ring, Gnd, 5V, and DI get connected to the arduino board. Does all that sound correct?

Asked by Poldark on 2022-02-13 19:11:37

Jaroslav Müller Yes, that's fine

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17HS4023 42*42*23mm Titan Stepper Motor with Cable Support Direct Drive & Bowden Mounting Bracket for 3D Printer
US$8.19 US$11.99

Q: do I have to change the firmware to use this on my ender 3?

Asked by MikXmas on 2021-04-17 14:08:25

Jaroslav Müller No, it doesn't have to, but watch the direction of motor rotation

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3.7V/7.4V /11.1V/14.8V Li-po Battery Indicator Display Board Power Storage Monitor
US$7.34 US$13.19

Q: Ok so if this does multiple battery voltages 1S, 2S, 3S etc how does it know which capacity is connected if there are only two wires?

Asked by BG544550151 on 2021-04-08 12:16:53

Jaroslav Müller Hi, this module is produced in several variants. 1S = 1 battery, 3.7V 2S = 2 batteries 7.4V etc ... It is connected to the resulting voltage, depending on the number of batteries used.

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6pcs 100cm U V YW Aluminium Channel Holder Corner Connector for LED Strip Light Bar Under Cabinet Night Lamp Kitchen 1.8cm Wide
US$5.61 US$9.99

Q: What's the weight of I (100cm) pc

Asked by BG453415165 on 2021-03-16 01:22:11

Jaroslav Müller Váha jednoho kusu je 100 gramů.

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DDB Extruder Clone Dual Drive Upgrade Bowden Extruder For 1.75mm filament 3D Printer Parts
US$14.16 US$21.99

Q: Which is the extruder step motor setting for Alfawise U30 pro? Does 415step/mm works?

Asked by davcbr on 2020-09-15 08:17:10

Jaroslav Müller Yes it works. I use 410 steps.

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1.3 Inch 4Pin White OLED LCD Display 12864 IIC I2C Interface Module
US$9.99 US$19.99

Q: Are the pins pre-soldered?

Asked by Rasmus on 2020-08-04 16:37:24

Jaroslav Müller No, how many are not soldered

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