John-Glammis
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Geekcreit® 12V/24V/36V/48V 8-70V LCD Acid Lead Lithium Battery Capacity Indicator Digital Voltmeter
US$7.59 US$13.99

Q: How can I set for a 24V lead-acid battery? I followed the instruction but it doesn't display P24. The P parameter value is from 1 to 17 !

Asked by massi636 on 2019-02-01 05:19:40

John-Glammis The instructions are a bit incorrect. P2 would be what you need for 24V (e.g. 2 lead acid batteries). I use P4 for 48V.

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Geekcreit® 5V 4 Channel Relay Module For PIC ARM DSP AVR MSP430 Geekcreit for Arduino - products that work with official Arduino boards
US$5.99 US$9.99

Q: Will you please tell me the physical board size of the unit?

Asked by Anjary on 2018-11-19 20:14:13

John-Glammis 72mm by 51mm, height 18mm.

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Geekcreit® 5V 4 Channel Relay Module For PIC ARM DSP AVR MSP430 Geekcreit for Arduino - products that work with official Arduino boards
US$5.99 US$9.99

Q: Bonjour, Est-ce que ce module peut être raccordé directement à une sortie Arduino UNO, quel doit être le courant passant dans les fils de commande IN(1 à 4) , merci de votre réponse

Asked by jpauldum on 2018-01-23 07:30:15

John-Glammis The current taken by each Songle relay is about 60-70mA. The current you need to sink at IN1 is 1.5mA (connect to ground to energize relay). The total current with all 4 relays energized is 250mA + 6mA = 256mA. For details and a circuit diagram of the Opto Isolator and transistor, Google "5 Volt 4 Channel Arduino Relay user manual".Je suis désolé, mon français est terrible.

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Geekcreit® 5V 4 Channel Relay Module For PIC ARM DSP AVR MSP430 Geekcreit for Arduino - products that work with official Arduino boards
US$5.99 US$9.99

Q: what is the board size and the distance between the mounting holes?

Asked by Anjary on 2018-11-23 18:21:23

John-Glammis 72mm by 51mm, height 18mm. Holes, centre to centre are 45mm and 67mm at each of the 4 corners.

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