Tech-dat/Interface-dat/I2S-dat/I2S-dat.md
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@@ -56,7 +56,7 @@ I2S Circuit:
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## Solution - control (slave module)
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-I2S Output Digital Microphone - [[INMP441-dat]] - [[ICS-43434-dat]] - [[SPH0645-dat]] - [[MSM261S4030H0R-dat]]
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+- [[I2S-microphone-dat]]
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audio amplifer - [[audio-dat]] - [[amplifier-dat]] - [[CS4344-dat]]
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Tech-dat/Interface-dat/I2S-dat/I2S-microphone-dat/I2S-microphone-dat.md
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# I2S-microphone-dat
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+I2S Output Digital Microphone - [[INMP441-dat]] - [[ICS-43434-dat]] - [[SPH0645-dat]] - [[MSM261S4030H0R-dat]]
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+
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+
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+
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## go advance
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- simultaneous data = microphones with **TDM (Time-Division Multiplexing)**
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Serial.println(right_channel);
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}
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}
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+
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+
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+## Other Pick
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+
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+LMD2718T261-OA1
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+
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+
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+## Types
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+
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+5P
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+
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+ICS-43434 - 5P
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+
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+8P
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+
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+WMM7040DTHN0-8/TR = WMM7040DTHN0-8/TR
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+
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+LGA8
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+
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+
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+
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+## ref
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+
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+- [[I2S-dat]] - [[I2S-microphone]] - [[I2S]]
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Tech-dat/constant-temperature-dat/constant-temperature-dat-01.png
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Tech-dat/constant-temperature-dat/constant-temperature-dat.md
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+# constant-temperature-dat
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+
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+
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+![](constant-temperature-dat-01.png)
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+
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+- temperature meansure and auto turn on the warming light
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+
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+
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+## ref
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+
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+- [[app-dat]]
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Tech-dat/power-dat/battery-dat/BMS-dat/BMS-dat.md
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## DW01 + FM8205
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+## Precautions before applying BMS:
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+1. Before installing the protection board, make sure the batteries are matched:
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+
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+- the voltage difference between each battery should not exceed 0.05V,
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+- the internal resistance difference should not exceed 5mΩ
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+- and the capacity difference should be less than 30mAh.
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+
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+The smaller the voltage difference between the batteries, the better the performance of the protection board.
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+
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+2. Connect the batteries in parallel first, then in series, and ensure correct welding (use nickel strips for spot welding on 18650 batteries, and solder for other batteries).
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+
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+Never use screws to fasten them, as this may damage the IC of the protection board.
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+
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+3. If you are replacing the protection board on old batteries, please check whether the batteries are in good condition before purchasing.
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+
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+4. During installation, use a multimeter to check whether the voltage of each battery in the series is the same.
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+
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+If the voltage difference exceeds 1.0V, it may indicate a fault such as poor range, power cut-off at startup, or short charging time, which are often caused by battery cell issues.
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+
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+A protection board fault typically results in: inability to charge, or the battery has voltage but cannot discharge.
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## ref
Tech-dat/power-dat/power-dat.md
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- [[power-protection]]
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-- [[battery-dat]]
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+- [[battery-dat]] - [[lithium-battery-dat]]- [[BMS-dat]]
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## workflow
app-dat/home-plant-dat/home-plant-dat.md
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@@ -28,7 +28,7 @@ sening by [[sensor-dat]] - [[temperature-sensor-dat]] and [[humidity-sensor-dat]
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#### cooling and warming
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-- [[Peltier-dat]] - [[fan-dat]]
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+- [[Peltier-dat]] - [[fan-dat]] - [[constant-temperature-dat]]
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### Air Flow