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Hey guys. Question here....
So I have nearly finished my DIY <$50 LPM. It's using that one circuit on that one thread (DIY LPM for Under $50) and I have gotten a digital panel voltmeter.
I have everything wired correctly, and I am using a 5.3V 320mA wall-wart. Now, the digital panel voltmeter requires <100mA, but the TEC module requires, AT MOST, 6A and 3.8V.
Everything works fine in the circuit (tested it separately), but when I hook up my wall-wart to the panel *and* the leads to my TEC, the panel shuts off. Without the leads to the TEC connected (it's actually a LM1085 that connects to the leads of the wall wart, which then connects to the TEC, I needed the voltage to be 3.8V, not 5.3V), the panel runs fine. But once I touch the POSITIVE wire of the LM1085 driver to the power supply output, the panel shuts off and my wall-wart stops outputting ANYTHING.
Does anyone have any idea why this would be happening? Any suggestions? I want to get this thing up and running at some point, preferably today, but my wall-wart just doesn't seem to want to power it.
So I have nearly finished my DIY <$50 LPM. It's using that one circuit on that one thread (DIY LPM for Under $50) and I have gotten a digital panel voltmeter.
I have everything wired correctly, and I am using a 5.3V 320mA wall-wart. Now, the digital panel voltmeter requires <100mA, but the TEC module requires, AT MOST, 6A and 3.8V.
Everything works fine in the circuit (tested it separately), but when I hook up my wall-wart to the panel *and* the leads to my TEC, the panel shuts off. Without the leads to the TEC connected (it's actually a LM1085 that connects to the leads of the wall wart, which then connects to the TEC, I needed the voltage to be 3.8V, not 5.3V), the panel runs fine. But once I touch the POSITIVE wire of the LM1085 driver to the power supply output, the panel shuts off and my wall-wart stops outputting ANYTHING.
Does anyone have any idea why this would be happening? Any suggestions? I want to get this thing up and running at some point, preferably today, but my wall-wart just doesn't seem to want to power it.
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