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Board-dat/OPM/OPMS022-dat/OPMS022-dat.md
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@@ -3,3 +3,28 @@
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600W DC-DC Step-Up Module 10-60V to 12-80V
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+https://www.electrodragon.com/product/600w-dc-dc-step-up-module-10-60v-to-12-80v/
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+
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+## Dimension
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+
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+![](2025-02-06-16-23-25.png)
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+
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+
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+## use guide
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+
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+The module application example:
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+
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+An input voltage of 12V current 4.17A, boost output voltage of 20V current 2.4A, module efficiency of 97%
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+
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+![](2025-02-06-16-19-55.png)
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+
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+Input voltage of 54V current 13.5A, output 58V current 12A use 5Ω1Kw resistor as a load test, an efficiency of 95%, Module output 965W
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+
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+![](2025-02-06-16-20-24.png)
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+
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+![](2025-02-06-16-20-32.png)
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+
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+
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+## demo video
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+
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+- [A demo video is shown that how it boost 100W LED, see it here.](https://www.electrodragon.com/?p=8309)
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Tech-dat/Sensor-dat/gas-sensor-dat/MQ-series-dat/MQ-5-dat/MQ-5-dat.md
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# MQ-2-dat
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-- wiki page - https://en.wikipedia.org/wiki/Blood_alcohol_content
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+- Please review the datasheet for conversions to ppm then [Wikipedia.org for BAC](https://en.wikipedia.org/wiki/Blood_alcohol_content)
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- datasheet - [[MQ-5.pdf]]
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Tech-dat/Sensor-dat/gas-sensor-dat/MQ-series-dat/MQ-series-dat.md
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@@ -17,6 +17,29 @@
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- [[MQ-5-dat]] - [[STH1044-dat]]
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+## Gas type and models
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+
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+# Selection Guide
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+
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+| Model | Detect Type |
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+|-------|------------------------------------------------------------------------------------------------------------------------------------------------------------|
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+| MQ-2 | LPG, i-butane, propane, methane, alcohol, Hydrogen, smoke |
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+| MQ-3 | Alcohol |
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+| MQ-5 | High sensitivity to LPG, natural gas, town gas <br> Small sensitivity to alcohol, smoke. <br> **Combustible gases**: Butane, propane, methane, hydrogen |
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+
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+
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+
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+
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+## Note of use
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+
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+Initiation check<br />
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+
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+* The sensor first warm-up for about 20 seconds.
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+* Put the sensor on a place without detecting gas,
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+* clockwise adjustment potentiometer until the light is on,
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+* then one-half turn counterclockwise until indicator does not light
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+* then close to the measured gas light is on, leave the measured gas, the light is off, this proof the sensor is working well
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+
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## ref
weekly-dat/2025-04-06-dat/2025-04-06-dat.md
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@@ -15,6 +15,10 @@ This a weekly update newsletter, to briefly tell you whats new and whats fun we
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- add documentation and comparsion table for multimeter two models from victory: [[PTOS038-dat]]
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+- [[MQ-series-dat]] sensors datasheets added
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+
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+- pre-built [[SIMCOM-at-dat]] - [[SSCOM-dat]] commands list file, ready to use
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+
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## Dissusion, Feedback, To-do
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- [[OPM1095-dat]] V2 with voltage supervisor