I apply 5V from arduino( actually 4.6V) to VCC and GND to arduino GND. I expect the LED on relay board should on, but nothing happened.
1678314
With Vcc and GND connected, pull IN1 or IN2 low by connecting it to GND to activate the relay. Pull high to deactivate the relay. It's opposite of what I first assumed as well. For an Arduino, setting the digital pin mode as an output will pull IN1 or IN2 low until you write them high.
1105892
mine does not have a green light, just the red one, I assume you are talking about the board... I would verify that you have 12 VDC and ground to the board, if so, hold the button down on the board, if the light does not come on or start blinking I would suggest getting it replaced under warranty if that is an option..
1303180
My experience is like APblackcat: it is different than my Arduino nano (it doesn't say "Arduino Nano", just Nano", and the PWR LED that is blue on the Arduino version is red, but it seems to work the same, and the workmanship is good.
2005819
I am using a standard power supply to operate mine - 5V on the power pins on the board (There is a jumper to set 5V or 12V on the board, everything works fine with 5V for me). With the power connected, I then use 4 input pins of the arduino to drive the motor, using the servo library, and everything works as expected. Let me know if you have more questions.
1224715
this thing newer worked for me, in no way, not with led nor with relay, nothing. The answer they gave me is that I had to insist trying to trigger it , but never happened.I did not have it replaced as to return it from Venezuela will cost me more than to buy a new one. But I will not buy the same product. Here in Venezuela , later on I found a similar product at a totally different price that was attached to a motorcycle horn and was producing different noises. I suggest you go to a shop where you can try the product
982604
Plug 12vdc to the voltage pins, to power the board. Then use a +5vdc connected to number pins one for each relay. Turning the +5vdc on or off controls the relay switch.
940703
HI Stew. I used 200ohms to drive 4 RGB leds in parallel with source of 9volts. All four connected to same resistor. I haven't measure current or voltages but they bright pretty good. let me know if you need any measure.
452463
I have been using this to run the AC power from the wall, 110VAC. The Arduino pins have plenty of juice to toggle to relay. I have run mine for extended periods and have not had it fail yet. Only bought one. I plan on buying more soon. Application: Power relay from Sanguinololu 1.3a installed on MendelMax. Powering 110VAC-12V 20A power supply.
2076643
The driver in the drop-in most likely was not rated for more than 4.2 volts. You'll need to replace the drop-in or if you're able to just replace the driver with a better one since the original driver usually only provides 1/2 the amperage to fully power the LED.
1880654
This is a copy of the Arduino nano, so you can find out more about it and the pinout here: http://arduino.cc/en/Main/arduinoBoardNanoShort answer is that you can apply 7-12V to the "VIN" pin or you can bypass the regulator by applying 5V directly to the 5V pin.
1865495
Certainly sounds like you wired it correctly. Just remember that LEDs are polarity sensitive, so make sure your positive is on the red wire. If that is confirmed, then I have nothing more to suggest.
1104428
Dear Newman, did you check the relay contacts working or not? Dou you want to use as a HOT CONTACTS? I think it is not possible. You need to use them as a separate circuit switch. Not a hot source switch. I am not sure. Good Luck...Good Luck...
1335151
I don't see why it wouldn't work, all it does is read the volts coming off the battery and reports that via led light. I think you would be perfectly fine with this indicator. The C is for your switch to turn on the indicator, with my application, I ran a wire and connected it directly with the positive terminal for the indicator, beings I want to be able to kill power to the entire indicator when not in use. Prolly wasn't needed but that was my choice and it works great. The R is unused and I think I read that it's not commonly used. Hope this helped, I love the indicator personally. -Keith
769256
Hi Bret, I have not got mine yet but being in the automotive field for over 30 years I would say it will draw next to nothing to run that tester it should light red or green led but it would take any power to do that I will let you know when I get it for sure
657043
I *think* they are for external power as you suggested. It would be useful when many relays were operated and their current exceeded the Arduino's power supply regulator circuit capability. I am running two 8-relay boards off the Arduino 5v but am careful to only operate 3-4 at a time. The Arduino forum may have additional insights. If using external power be careful not to exceed arduino's output pin voltage and current sink capabilities.
1408190
I just hooked mine directly to a trolling motor battery with spring clips & they are bright.you might have a problem with your relay.try hooking them up direct & see how bright they get.
587727
I'm not happy about the fact that there is no paperwork. You may have figured out the basis: +V is 12vdc in and GND is the ground. Terminal 1=N.O., 2=Com, 3=N.C. for relay "C" the rest follow 4,5 & 6 for relay "A"; 7,8 & 9 for relay "D" and 10,11 &12 for relay "B" . Jumper 4&3 for momentary (Only ON while button is pressed) jump 1&2 for press ON and hold ON then press again to release relay. Button S1 I haven't figured out. I will. Experiment, you can't blow it up.