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Draagbare draadloze elektrische pompdispenser Oplaadbare gallon-drinkwaterflesdispenser met schakelaar
Draagbare draadloze elektrische pompdispenser Oplaadbare gallon-drinkwaterflesdispenser met schakelaar
US$14.99 US$18.99

Q: What bottle neck diameters are supported?

gevraagd door gruby_karol op 2020-05-08 04:30:37

Cream5 You can refer to the bucket in the description.

2020-05-09 02:36:21 Nuttig (0)
Antwoorden (1)
24V 4-kanaals niveau-trigger opto-koppelaar relaismodule Geekcreit voor Arduino - producten die werken met officiële Arduino-boards
24V 4-kanaals niveau-trigger opto-koppelaar relaismodule Geekcreit voor Arduino - producten die werken met officiële Arduino-boards
US$9.99 US$11.99

Q: The name of the item includes "products that work with official Arduino boards". Does it mean, that I can control the relays directly with Arduino (giving 0/3.3V to IN1, IN2, IN3, IN4)? Cannot deduce it from the description...

gevraagd door gruby_karol op 2020-03-18 03:26:34

Dayny "Products that work with official Arduino boards", I think it means compatible with arduino related projects.

2020-03-18 20:46:23 Nuttig (0)
Antwoorden (1)
Machifit JT80SL DC 3-6V waterpomp 120L / H Ultrastille micro horizontale mini waterpomp met duikvermogen
Machifit JT80SL DC 3-6V waterpomp 120L / H Ultrastille micro horizontale mini waterpomp met duikvermogen
US$8.99 US$10.99

Q: Can the pump be tested without water? In other words: is working without the fluid harmful to the device?

gevraagd door gruby_karol op 2020-03-17 10:19:16

Lactoscope It is better use in water.

2020-03-18 02:29:35 Nuttig (0)
Antwoorden (1)
24 V Naar 3.3 V / 5V/12 V 4 Kanaals Optocoupler Isolatie Board Geïsoleerde Module PNP Output PLC Signaalniveau Voltage Converter
24 V Naar 3.3 V / 5V/12 V 4 Kanaals Optocoupler Isolatie Board Geïsoleerde Module PNP Output PLC Signaalniveau Voltage Converter
US$6.99 US$9.99

Q: how do you check if it works properly? I fed 24V DC (to +1, -1, etc.), 3.3V to GND and VCC, and observed 1.5, 1.6V on the output (between GND and O1, O2, etc.). expected output voltage was 3.3V. is it the right way to validate?

gevraagd door gruby_karol op 2020-03-02 12:09:38

Mrmee The positive pole of the DC power supply is the same with the signal output voltage. For example, if the signal is 24V to 3.3V, then VCC = 3.3V input.

2020-03-08 21:26:10 Nuttig (0)
Antwoorden (1)

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