Board-dat/SDR/SDR1064-dat/SDR1064-dat.md
... ...
@@ -29,8 +29,8 @@ Motor Control: Phase_A, Phase_B, VIN, V_Motor
29 29
| nodemcu | right | func1 | func2 | [[SDR1064-dat]] |
30 30
| ------- | ----- | ----- | ----- | --------------- |
31 31
| D0 | I016 | USER | WAKE | |
32
-| D1 | I05 | | | PWM_ A |
33
-| D2 | I04 | | | PWM_B |
32
+| D1 | I05 | | | PWM_ A |
33
+| D2 | I04 | | | PWM_B |
34 34
| D3 | I00 | FLASH | | Motor_1 |
35 35
| D4 | I02 | TXD1 | | Motor_2 |
36 36
| | 3.3V | | | |
Tech-dat/tech-dat.md
... ...
@@ -3,7 +3,7 @@
3 3
4 4
- [[power-dat]] - [[dcdc-down-dat]] - [[dcdc-boost-dat]] - [[ldo-dat]]
5 5
6
-- [[battery-dat]] - [[battery-charger-dat]] - [[battery-rechargerable-dat]] - [[BMS-dat]] - [[18650-dat]]
6
+- [[battery-dat]] - [[battery-charger-dat]] - [[battery-rechargerable-dat]] - [[BMS-dat]] - [[18650-dat]] - [[battery-pack-dat]]
7 7
8 8
- [[EDA-simulation-dat]] - [[EDA-dat]]
9 9
... ...
@@ -99,10 +99,14 @@
99 99
100 100
## Mechnicals
101 101
102
-- [[CAD-dat]] - [[CNC-dat]] - [[openpnp-dat]] - [[3d-printer-dat]] - [[pnp-machine-dat]] - [[glue-dat]] - [[heatsink-dat]]
102
+- [[mechanics-dat]] - [[CAD-dat]] - [[CNC-dat]]
103
+
104
+- [[openpnp-dat]] - [[3d-printer-dat]] - [[pnp-machine-dat]] - [[glue-dat]] - [[heatsink-dat]]
103 105
104 106
- [[3D-dat]]
105 107
108
+- [[mechanical-tools-dat]]
109
+
106 110
## Circuits
107 111
108 112
- [[circuits-dat]] - [[LC-circuits-dat]] - [[bias-T-dat]] - [[gain-shaping-dat]] - [[LNA-dat]]
app-dat/RC-dat/RC-code-dat/rover-2.ino
... ...
@@ -11,7 +11,7 @@ const int IN1 = 0; // Direction for Motor 1
11 11
const int IN2 = 2; // Direction pin 1 for Motor 2
12 12
13 13
// WS2812 LED Strip Configuration
14
-#define LED_PIN 15
14
+#define LED_PIN 15 // nodemcu pin D8
15 15
#define LED_COUNT 8
16 16
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
17 17
app-dat/RC-dat/rover-dat/rover-dat.md
... ...
@@ -14,6 +14,9 @@ https://ardupilot.org/rover/index.html
14 14
- CUAV V5 Plus Overview == STM32F765
15 15
16 16
17
+## boards
18
+
19
+- [[SDR1064-dat]]
17 20
18 21
## 3D printed
19 22
mechanics-dat/mech-tools-dat/2025-04-10-18-42-26.png
... ...
Binary files a/mechanics-dat/mech-tools-dat/2025-04-10-18-42-26.png and /dev/null differ
mechanics-dat/mech-tools-dat/mech-tools-dat.md
... ...
@@ -1,22 +0,0 @@
1
-
2
-# mech-tools-dat
3
-
4
-- [[Wrench-dat]]
5
-
6
-
7
-## Socket Wrench Drive
8
-
9
-
10
-### Common Socket Wrench Drive Sizes:
11
-
12
-| Name | Drive Size | Square Drive (mm) | Typical Use Cases | CN |
13
-| ------ | ---------- | ------------------ | ----------------------------------------- | --------- |
14
-| Small | 1/4" drive | 6.35 mm | Electronics, precision work, small screws | 方头 小飞 |
15
-| Medium | 3/8" drive | 9.5 mm | Household use, light automotive repair |
16
-| Large | 1/2" drive | 12.7 mm (aka 12.5) | Automotive, heavy torque applications | 大飞 |
17
-
18
-![](2025-04-10-18-42-26.png)
19
-
20
-
21
-
22
-
mechanics-dat/mechanical-tools-dat/2025-04-10-18-42-26.png
... ...
Binary files /dev/null and b/mechanics-dat/mechanical-tools-dat/2025-04-10-18-42-26.png differ
mechanics-dat/mechanical-tools-dat/mechanical-tools-dat.md
... ...
@@ -0,0 +1,25 @@
1
+
2
+# mech-tools-dat
3
+
4
+- [[Wrench-dat]]
5
+
6
+- [[screws-dat]]
7
+
8
+## Socket Wrench Drive
9
+
10
+
11
+### Common Socket Wrench Drive Sizes:
12
+
13
+| Name | Drive Size | Square Drive (mm) | Typical Use Cases | CN |
14
+| ------ | ---------- | ------------------ | ----------------------------------------- | --------- |
15
+| Small | 1/4" drive | 6.35 mm | Electronics, precision work, small screws | 方头 小飞 |
16
+| Medium | 3/8" drive | 9.5 mm | Household use, light automotive repair |
17
+| Large | 1/2" drive | 12.7 mm (aka 12.5) | Automotive, heavy torque applications | 大飞 |
18
+
19
+![](2025-04-10-18-42-26.png)
20
+
21
+
22
+
23
+## ref
24
+
25
+- [[mech-tools]] - [[mechanics]]
mechanics-dat/mechanics-dat.md
... ...
@@ -15,6 +15,8 @@
15 15
16 16
- [[PCB-installation-dat]]
17 17
18
+- [[mechanical-tools-dat]]
19
+
18 20
## ref
19 21
20 22
- [[tech-dat]]
mechanics-dat/screws-dat/screws-dat.md
... ...
@@ -6,7 +6,27 @@
6 6
- M3x10
7 7
- M5x10
8 8
9
-## Self-tapping Screws
9
+
10
+## bolt and screw
11
+
12
+| Feature | Bolt | Screw |
13
+| --------------------- | -------------------------------------------------- | ------------------------------------------------------------------- |
14
+| **Usage** | Used with a **nut** or threaded hole | Often used **without a nut**, threads into material directly |
15
+| **Holding Mechanism** | Relies on **external nut** for clamping force | Creates clamping force by threading directly into the material |
16
+| **Tools Used** | Typically needs a **wrench** or **socket** | Often driven by **screwdriver** or **Allen key** |
17
+| **Installation** | Requires access to **both sides** (to tighten nut) | Can often be installed from **one side** only |
18
+| **Thread Type** | Usually has a **blunt end** and uniform threads | Often has **pointed or tapered end**, cutting threads into material |
19
+| **Common Example** | Hex bolt with nut on the other end | Wood screw going into wood directly |
20
+
21
+
22
+## common used bolt
23
+
24
+- hex head bolt
25
+- hex socket head bolt
26
+- Phillips Head Screw
27
+
28
+
29
+## Screw == Self-tapping Screws
10 30
11 31
Self-tapping screws are designed to create their own hole as they are driven into the material. They are commonly used in metal, plastic, and wood applications. The most common types of self-tapping screws include:
12 32
power-dat/battery-pack-dat/battery-pack-dat.md
... ...
@@ -26,7 +26,7 @@
26 26
| 2S2P | 7.4V | 6Ah | 4 cells total (2 series × 2 parallel) |
27 27
| **3S1P** | **11.1V = 12V** | **3Ah** | **Common for RC and drones** |
28 28
| 3S2P | 11.1V | 6Ah | 6 cells total |
29
-| 4S1P | 14.8V | 3Ah | Laptop batteries, power tools |
29
+| 4S1P | 14.8V | 3Ah | Laptop batteries, [[power-tools-dat]] |
30 30
| 4S2P | 14.8V | 6Ah | Higher capacity variant |
31 31
| 5S1P | 18.5V | 3Ah | Electric tools |
32 32
| 5S2P | 18.5V | 6Ah | Longer runtime tools |
... ...
@@ -41,6 +41,9 @@
41 41
| 14S1P | 51.8V | 3Ah | Some 52V e-bike packs |
42 42
| 14S2P | 51.8V | 6Ah | Higher capacity |
43 43
44
+common apps - [[Electric-tools-dat]] - [[drone-battery-dat]]
45
+
46
+
44 47
## Simple 1S to 2S management Solutions
45 48
46 49
![](2025-05-12-16-09-09.png)
... ...
@@ -93,4 +96,6 @@
93 96
94 97
## ref
95 98
96
-- [[battery-dat]]
... ...
\ No newline at end of file
0
+- [[battery-dat]]
1
+
2
+- [[battery-pack]] - [[battery]]
... ...
\ No newline at end of file