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DosingBox

STDDosingBox

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CC-BY 3.0

Creation time:2021-05-04 09:17:04Update time:2021-11-08 09:27:35

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
PCB

BOM

IDNameDesignatorFootprintQuantity
1M04HTUJP11X041
2OLED 0.96 INCH 128X64 I2COLEDDS1OLED 0.96 INCH 128X64 I2C1
3ESP32U4ESP321
412VDCDC1DC-IN-TH_DC0051
5OUTPUTP1,P2,P3,P4CONN-TH_2P-P5.004

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