Quick question on a DIY thermostat controller for PELTIER WATER CHILLER

the one you want to use will work fine. you need to connect a jumper wire between the two negative wire contacts on the board (one from the power supply and one to the peltier/fan)....or between the two positive wires in the other diagram (the polarity doesnt matter)

dagweed said:

the one you want to use will work fine. you need to connect a jumper wire between the two negative wire contacts on the board (one from the power supply and one to the peltier/fan)....or between the two positive wires in the other diagram (the polarity doesnt matter)

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What do you mean? Earlier in the thread dstroy told me to just plug in the fan and prettier wires into the relay output spots and the power from the supply right into the negative and positive spots on the pcb. Why do some diagrams show splitting the power cord and peltie/fans cords to be plugged into the spots?

Like on the pictures, you mean they're actually the same besides that positive and negative are split the same way just different polarities on each pic? It doesn't matter? So that needs to be done then. I can't just plug it in like the very bottom pic shows coming from the 220 with the light bulb?

no, use the 12v DC diagram, the 220v AC (european style) wiring diagram is different because the board can't carry the load

dstroy said:

Yeah man, the load (cooler and fan) should get connected to the relay out.

The power goes to the “dc 12v power interface” like you said.

No practical experience with peltier coolers, just played around with them for fun so no clue how much water you can chill with it.

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I'm really wondering why he told me to wire it like the 220v pic then in this message...