
VoltLog
@VoltLog
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http://t.co/DrA7B9MU8F
Constanta, Romania
Joined March 2008
I forgot to mention this is a Thermal Master Thor 002. Screen is 640x480px 60Hz IPS, features SuperResolution IR 512×384px
thermalmaster.com
Thor002 Handheld Thermal Imager, 512×384 X³IR™ Resolution, Thermal Imaging Camera with IR Fuse™, 640×480 3.5" IPS Hard Screen, ±1.5℃ accuracy, -4℉~ 1022℉ Temperature Range, 25Hz, 35mK
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And Bingo! As suggested in the comments the culprit was the MLCC on the LDO. Removing the LDO didn't show any improvement but when I removed the caps (2x 10uF) it immediately dropped to just 11-12uA. One of the MLCC caps shows an ESR of 1Ohm. @joulescope used for measurements.
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Something is causing my coffee scale to drain the battery in a few days instead of the normal battery life which is months. Luckily I have the best tool for this kind of debug @joulescope JS220.
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Just did a battery upgrade on My @RAKwireless Rak7289v2 Lora gateway and I was impressed that a year later after being exposed to the element everything is in excellent condition. PS: this is a DIY installation with a DIY solar system, not the original one from RAK.
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