BOM-DAT/CONN-DAT/conn-pin-header-dat/conn-pin-header-dat.md
... ...
@@ -54,4 +54,10 @@ note below three version available, we only sell "right-bend" version here [[CCO
54 54
### right bend
55 55
56 56
57
-![](2025-04-08-15-17-53.png)
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\ No newline at end of file
0
+![](2025-04-08-15-17-53.png)
1
+
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+
3
+
4
+## ref
5
+
6
+- [[conn-pin-header]]
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\ No newline at end of file
BOM-DAT/mosfet-dat/mosfet-dat.md
... ...
@@ -21,7 +21,7 @@ common brand: [[Vishay-dat]]
21 21
| SI2302 | | [[Vishay-dat]] | 3.1A | SOT-23 | N | 20V N-Channel MOSFET |
22 22
| SI2307 | | [[Vishay-dat]] | 3.7A | SOT-23 | N | 30V N-Channel MOSFET |
23 23
| IR F5305 | 5305 | [[Infineon-dat]] | 31A | TO-220AB | P | 55V P-Channel MOSFET |
24
-| IR FR1205 | | [[Infineon-dat]] | 33A | D2PAK | N | 55V N-Channel MOSFET |
24
+| IR [[FR1205-dat]] | | [[Infineon-dat]] | 33A | D2PAK | N | 55V N-Channel MOSFET |
25 25
26 26
27 27
Board-dat/NWI/NWI1115-dat/NWI1115-dat.md
... ...
@@ -62,4 +62,4 @@ https://w.electrodragon.com/w/ESP_Relay_Board_VDC
62 62
63 63
- [[esp-relay-board-dat]]
64 64
65
-- [[MP1584-dat]]
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\ No newline at end of file
0
+- [[MP1584-DAT]]
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\ No newline at end of file
Board-dat/NWI/NWI1126-DAT/NWI1126-DAT.md
... ...
@@ -149,4 +149,6 @@ Default firmware, right bottom LED blink, drive common 4ch RGBW LED strip to bli
149 149
150 150
- [[ESP32-dat]] - code at [[arduino-esp32-dat]]
151 151
152
-- [[mosfet-dat]] - [[led-driver-dat]]
152
+- [[mosfet-dat]] - [[led-driver-dat]] - [[conn-pin-header-dat]]
153
+
154
+- [[ESP32-ADC-dat]]
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\ No newline at end of file
Board-dat/OPM/OPM1152-dat/OPM1152-dat.md
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@@ -1,7 +1,7 @@
1 1
2 2
# OPM1152 dat
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4
-- [[OPM1153-dat]] - [[MP1584-dat]]
4
+- [[OPM1153-dat]] - [[MP1584-DAT]]
5 5
6 6
- [[OPM1152]]
7 7
Board-dat/OPM/OPM1153-dat/OPM1153-dat.md
... ...
@@ -11,4 +11,4 @@ up to 3000mA output
11 11
12 12
- [[opm1153]]
13 13
14
-- [[MP1584-dat]] - [[OPM1152-dat]]
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\ No newline at end of file
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+- [[MP1584-DAT]] - [[OPM1152-dat]]
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\ No newline at end of file
Chip-cn-dat/Espressif-dat/ESP32-HDK-dat/ESP32-ADC-dat/ESP32-ADC-dat.md
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@@ -0,0 +1,52 @@
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+
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+# ESP32-ADC-dat
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+
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+## ESP32 ADC Input on IO33
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+
6
+### ✅ Can I Use IO33 for ADC Input?
7
+**Yes**, IO33 can be used as an analog input pin on the ESP32.
8
+
9
+---
10
+
11
+### 📌 IO33 Technical Details
12
+- **GPIO Number**: IO33
13
+- **ADC Unit**: ADC1
14
+- **ADC Channel**: `ADC1_CHANNEL_5`
15
+- **Voltage Input Range**:
16
+ - **Default**: 0.0V – 1.1V
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+ - **With Attenuation**:
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+ | Attenuation | Voltage Range |
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+ |-------------|----------------|
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+ | 0 dB | 0.0 – 1.1 V |
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+ | 2.5 dB | 0.0 – ~1.5 V |
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+ | 6 dB | 0.0 – ~2.2 V |
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+ | 11 dB | 0.0 – ~3.3 V |
24
+
25
+---
26
+
27
+### ⚠️ Important Notes
28
+- Maximum safe input: **3.3V**
29
+- ADC1 is **safe for Wi-Fi use** (ADC2 is not stable when Wi-Fi is on)
30
+- ADC readings may not be perfectly linear — consider calibration for precision
31
+
32
+---
33
+
34
+🧪 Example Code (Arduino)
35
+
36
+
37
+ void setup() {
38
+ analogReadResolution(12); // Set ADC resolution (0–4095)
39
+ analogSetAttenuation(ADC_11db); // Set to read up to 3.3V
40
+ Serial.begin(115200);
41
+ }
42
+
43
+ void loop() {
44
+ int adcValue = analogRead(33); // Read from GPIO33
45
+ float voltage = adcValue * (3.3 / 4095.0);
46
+ Serial.println(voltage);
47
+ delay(500);
48
+ }
49
+
50
+## ref
51
+
52
+- [[NWI1245-dat]]
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\ No newline at end of file
Chip-dat/Infineon-dat/2025-04-24-14-11-09.png
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Binary files /dev/null and b/Chip-dat/Infineon-dat/2025-04-24-14-11-09.png differ
Chip-dat/Infineon-dat/Infineon-IRFR1205-DataSheet-v01_01-EN.pdf
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Binary files /dev/null and b/Chip-dat/Infineon-dat/Infineon-IRFR1205-DataSheet-v01_01-EN.pdf differ
Chip-dat/Infineon-dat/Infineon-dat.md
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@@ -0,0 +1,42 @@
1
+
2
+# Infineon-dat.md
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+
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+- [[IRF540N-dat]] - [[IRF8313-dat]] - [[F5305-dat]] - [[FR1205-dat]]
5
+
6
+
7
+
8
+## FR1205-dat
9
+
10
+- [[mosfet-dat]]
11
+
12
+![](2025-04-24-14-11-09.png)
13
+
14
+
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+- [[Infineon-IRFR1205-DataSheet-v01_01-EN.pdf]]
16
+
17
+The FR1205 is an N-channel enhancement mode power MOSFET manufactured by Fortune Semiconductor (often under the brand Fortune or Fortune Semiconductor Corporation). It is commonly used in power switching applications due to its ability to handle relatively high voltages and currents with low on-resistance.
18
+
19
+Key Specifications of FR1205:
20
+
21
+- Type: N-Channel MOSFET
22
+- Drain-Source Voltage (Vds): 55V
23
+- Continuous Drain Current (Id): 33A (at 25°C)
24
+- Rds(on) (Max): ~0.045Ω @ Vgs = 10V
25
+- Gate Threshold Voltage (Vgs(th)): 2.0V - 4.0V
26
+- Power Dissipation: ~110W
27
+- Package: TO-220 or TO-252 (DPAK), depending on the version
28
+
29
+Features:
30
+
31
+- **Low Rds(on)**: Reduces conduction losses, improving efficiency.
32
+- **High Current Handling**: Suitable for high-current loads like motor control or power supply outputs.
33
+- **Fast Switching**: Good for use in high-frequency switching power supplies and converters.
34
+- **Enhanced ESD protection** (depending on version).
35
+
36
+Common Applications:
37
+
38
+- DC-DC converters
39
+- Power management in computers and portable devices
40
+- Motor drivers
41
+- Load switches
42
+- General-purpose switching
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\ No newline at end of file
Chip-dat/MPS-DAT/MP1584-DAT.md
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@@ -1,24 +0,0 @@
1
-
2
-# MP1584-DAT
3
-
4
-- [[OPM1104-dat]]
5
-
6
-- [[OPM1006-dat]]
7
-
8
-- [[OPM1152-dat]] - [[OPM1153-dat]]
9
-
10
-
11
-
12
-## chip info
13
-
14
-3A, 1.5MHz, 28V Step-Down Converter
15
-
16
-- https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP1584EN-LF-Z/document_id/204/
17
-
18
-
19
-
20
-- [[mp1584]]
21
-
22
-
23
-## ref
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-
Chip-dat/MPS-DAT/MP1584-DAT/MP1584-DAT.md
... ...
@@ -0,0 +1,24 @@
1
+
2
+# MP1584-DAT
3
+
4
+- [[OPM1104-dat]]
5
+
6
+- [[OPM1006-dat]]
7
+
8
+- [[OPM1152-dat]] - [[OPM1153-dat]]
9
+
10
+
11
+
12
+## chip info
13
+
14
+3A, 1.5MHz, 28V Step-Down Converter
15
+
16
+- https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP1584EN-LF-Z/document_id/204/
17
+
18
+
19
+
20
+- [[mp1584]]
21
+
22
+
23
+## ref
24
+
Chip-dat/MPS-DAT/MPS-dat.md
... ...
@@ -7,7 +7,7 @@ legacy wiki page - https://w.electrodragon.com/w/Category:MPS
7 7
8 8
- [[MPS-ACDC-dat]]
9 9
10
-- [[MP1584-dat]]
10
+- [[MP1584-DAT]]
11 11
12 12
- [[MP2315-dat]]
13 13
Tech-dat/power-dat/voltage-divider-dat/2025-04-24-13-05-56.png
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Binary files /dev/null and b/Tech-dat/power-dat/voltage-divider-dat/2025-04-24-13-05-56.png differ
Tech-dat/power-dat/voltage-divider-dat/voltage-divider-dat.md
... ...
@@ -1,17 +1,39 @@
1 1
2 2
# voltage-divider-dat
3 3
4
+== voltage ladder
4 5
5 6
![](2024-02-01-18-36-27.png)
6 7
7 8
Vout = Vin * (R2 / (R1 + R2))
8 9
9
-18 * (13 / (13+36)) = 4.77V
10
-18 * (13 / (13+51)) = 3.65V
10
+ 4.77V = 18V * (13K / (13K + 36K) )
11
+ 3.65V = 18V * (13K / (13K + 51K) )
12
+
13
+ 0.877V = 5V * (47K / (47K + 10K) )
14
+ 0.526V = 3V * (47K / (47K + 10K) )
15
+
16
+ 0.952V = 5V * (51K / (51K + 12K) )
17
+ 0.571V = 3V * (51K / (51K + 12K) )
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+
19
+
20
+
21
+A voltage divider circuit is a very common circuit that takes a higher voltage and converts it to a lower one by using a pair of resistors. The formula for calculating the output voltage is based on Ohms Law and is shown below.
22
+
23
+![](2025-04-24-13-05-56.png)
24
+
25
+where:
26
+
27
+- VS is the source voltage, measured in volts (V),
28
+- R1 is the resistance of the 1st resistor, measured in Ohms (Ω).
29
+- R2 is the resistance of the 2nd resistor, measured in Ohms (Ω).
30
+- Vout is the output voltage, measured in volts (V),
11 31
12 32
## ref
13 33
14 34
- https://learn.sparkfun.com/tutorials/voltage-dividers/all#:~:text=A%20voltage%20divider%20is%20a,most%20fundamental%20circuits%20in%20electronics.
15 35
16 36
17
-https://ohmslawcalculator.com/voltage-divider-calculator
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\ No newline at end of file
0
+https://ohmslawcalculator.com/voltage-divider-calculator
1
+
2
+- [[ESP32-ADC-dat]]