Good Day!
This schematic is just a part of the actual circuit that we made.
The switch there is supposedly a microcontroller. We're using an Arduino Uno R3.
We used a 27Kohm, 1/4 watt resistor. One out for the Arduino must trigger two transistors that are both connected to their respective relays.
We have 5 outs in total. 4 have two relays paralleled to it. The fifth one is attached to a single relay for a fan.
The rest (8 relays) are connected to 12VDC,1A, 20Watts, DC Ballasts. And these ballasts are connected to 8 fluorescent lamps (20 watts).
We used a DHT11 as a temperature sensor.
Upon testing:
We first used a 12VDC adapter. We forgot to consider the ampere rating. It just made the light indicators blink fast and the relays to click as well. But it doesn't even lit up one lamp. So we used one of our regular power supplies. It was able to lit up two lamps. But it was supposed to lit up four. We have noticed in the display that from 12VDC, the reading decreased by2 to 4 volts. And there's also this buzzing sound. I think we had the power supply broken so we can't measure its ampere rating now. We decided that we'll use another power supply so we are about to buy a centralized power supply with 220ACto12VDC output, 15A, 180 watts.
So,
1.)Will that be enough to make our circuit work properly?
2.)Should we change the resistors or is it okay to just use 1/4 watt?
3.)Will the high ampere rating affect it even if it's just meant to trigger the resistors?
I hope I have described the problem properly
We really need help. We can't afford to break anything anymore.