29 lines
636 B
Markdown
29 lines
636 B
Markdown
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---
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title: "ESP32 as a low power sensor"
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date: 2024-04-20
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---
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Notes on using an ESP32 as a low power sensor:
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Battery:
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- I have some 18650's already
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- Battery holder is 76 x 21 x 19
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- LiPo drop by about 1 % per month
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- 3000 mAh at 1 %/month is ~40 uA/h
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ESP32:
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- FireBeetle 2 ESP32-C6 is apparently 20 uA in deep sleep
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- 60 x 25.4 x 7.3 mm
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- Takes up to a 6 V panel
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Panel:
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- Could use a solar panel to top up the power
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- A 5 V 65 mA panel is 68 x 36 mm
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- Ideally the LiPo should stay cool, but the panel should get sun...
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Box:
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- Maximum of dimensions is 76 x 36 x 19 mm
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- Purecrea have a small 77 x 52 x 28 mm inside dimension box
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