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STD DosingBox
License: CC-BY 3.0
Mode: Editors' pick
- 1
Update time：
2021-11-08 09:27:35
Creation time：
2021-05-04 09:17:04
Description
Features
- LM2596 input is DC3.2V~46V. The input voltage is depend on your DC motor. 12V or 24V DC motor should be OK.
- LM2596 output should adjust to 5V for ESP32 and L293D
- ESP32 can receive MQTT command to control DC motor
- ESP send PWM signal to L293D
ESP32 Source Code
https://github.com/samuelchiang/ESP32_Doser
Design Drawing
schematic diagram
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PCB
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PCB_DosingBox_手動
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PCB_DosingBox_withGNDWire
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PCB_DosingBox_tight
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PCB_DosingBox_short_path
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | M04 | HTUJP1 | 1X04 | 1 |
| 2 | OLED 0.96 INCH 128X64 I2C | OLEDDS1 | OLED 0.96 INCH 128X64 I2C | 1 |
| 3 | ESP32 | U4 | ESP32 | 1 |
| 4 | 12VDC | DC1 | DC-IN-TH_DC005 | 1 |
| 5 | OUTPUT | P1,P2,P3,P4 | CONN-TH_2P-P5.00 | 4 |
| 6 | L293D | U1,U3 | DIP-16_16P-L20.2-W6.6-P2.54-LS7.6-BL | 2 |
| 7 | lm2596 | U2 | LM2596-MODULE | 1 |
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