CHOCOLANDES-PCB
In this repository you will find the gerber files ready for the Chocolandes PCB fabrication and the eagle files with which the pcb was designed.
Here are the components and connections contained in the instrumentacion.sch file:
Material's list:
In this project we use two ESP32 microcontrollers. One is dedicated to the stepper motor movement (ESP-MOT) and the other is in charge of all the other functionalities (ESP-MAIN).
L293D
Dual DC motor driver
- In1: D33 ESP-MAIN
- In2: D32 ESP-MAIN
- Out1: Red wire motor pump
- Out2: Black wire motor pump
- En1: 5V
- VCC: 5V
- Vss: 12V
- Pin 4 y 5: GND
HX711
Load cell ADC converter
- E+: Red
- E-: Black
- A+: Withe
- A-: Green
- Dt: D26 ESP-MAIN
- Sck: D27 ESP-MAIN
- Vcc: 5V
A4988
Stepper motor driver
- Dir: D19 ESP-MOT
- Step: D18 ESP-MOT
- Enable: D5 ESP-MOT
- Vdd: 5V
- Reset & Sleep Are connected between them
- 2B: Black
- 2A: Green
- 1A: Blue
- 1B: Red
- Vmot: External power (12V)
NEMA 17HS4401s
Stepper motor with 1.8° resolution
- Black: 2B
- Green: 2A
- Blue: 1A
- Red: 1B
HC020P
- Vdd: 5V
- Data: D34 ESP-MOT
DS18B20
- Vdd: 5V
- Data: D13 ESP-MAIN
Motor Pump
- Red: Out1 L293D
- Black: Out2 L293D
Load Cell
- Red: E+
- Black: E-
- Withe: A+
- Green: A-
ESP-MAIN
- D33: In1 L293D
- D32: In2 L293D
- D26: Dt HX711
- D27: Sck HX711
- D13: Data DS18B20
ESP-MOT
- D5: Enable A4988
- D19: DIR A4988
- D18: STEP A4988
- D34: Data HC020P