TurtlePlotBot Electronics ========================= .. _DrawBot-Board: ESP32 DrawBot Board ------------------- .. figure:: images/DBB3.3_18.jpg Esp-32 DrawBot Board V3.3 Assembled | Esp-32 DrawBot Board PC Board Layout ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ .. figure:: images/Esp32-DrawBotV3.3_PCB.svg Esp-32 DrawBot Board V3.3 PC Board | Esp-32 DrawBot Board schematic ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ .. figure:: images/Esp32-DrawBotV3.3_Sch.svg Esp-32 DrawBot Board V3.3 | Parts List ---------- ======== ================================ Quantity Description ======== ================================ 1 ESP32 DrawBot PC board 1 TTGO T-Display ESP32 module 1 MakerFocus 2A 5V Charger/Boost 1 180 degree micro USB pth socket 1 K1-1506DN-01 5 way switch 1 SP3T Switch 2 18 pin single row male header 1 6x2 pin male header 1 6 pin female header 1 4 pin male header 1 3 Pin male header 2 2 Pin male header 2 XH JST 2.5 5 Pin male header 1 18650 Battery or 4 AA Batteries ======== ================================ | .. figure:: images/DBB_Parts.jpg | Assembly Instructions --------------------- .. figure:: images/DBB3.3_01.jpg | Stepper Motor Connectors ^^^^^^^^^^^^^^^^^^^^^^^^ Place and solder the XH JST 2.5 5 Pin male headers in the areas labeled `LEFT` and `RIGHT`. These headers will provide power and control the left and right stepper motors. .. figure:: images/DBB3.3_02.jpg .. figure:: images/DBB3.3_03.jpg | I often use tape to hold components in place while soldering. .. figure:: images/DBB3.3_04.jpg | `PEN` Servo Header ^^^^^^^^^^^^^^^^^^ Place and solder a three-pin male header in the area labeled `PEN`. This header will provide power and a signal to control the pen lift servo. .. figure:: images/DBB3.3_05.jpg | `PORT B` Header ^^^^^^^^^^^^^^^ Place and solder a 2x6 pin male header in the area labeled `PORT B`. This header provides power and 8 general purpose input/output pins. .. figure:: images/DBB3.3_06.jpg | `BATTERY` Header ^^^^^^^^^^^^^^^^ Place and solder a four-pin male header in the position labeled `BATTERY`. .. figure:: images/DBB3.3_07.jpg | `MH-CD42` Module Header ^^^^^^^^^^^^^^^^^^^^^^^ Place and solder a six-pin female header in the area labeled `MH-CD42`. Then insert a connector keying plug into the 3rd hole (GND) of the MH-CD42 header as shown. This prevents you from inserting the MH-CD42 modules backwards and shorting the battery. .. figure:: images/DBB3.3_08.jpg .. figure:: images/DBB3.3_09.jpg .. figure:: images/DBB3.3_10.jpg | `CHG` Header ^^^^^^^^^^^^ Place and solder a two-pin male header in the area labeled `CHG`. This header provides an alternative method to provide power to the charge circuit of the power module. .. figure:: images/DBB3.3_11.jpg | `USB` Charge Connector ^^^^^^^^^^^^^^^^^^^^^^ Place and solder the 180 degree micro USB pth socket in the area labeled `USB`. This connector a charge only connection that is used to provide power to the charge circuit of the power module. .. figure:: images/DBB3.3_12.jpg | `SW1` Five-Way Switch ^^^^^^^^^^^^^^^^^^^^^ Place and solder the K1-1506DN-01 5-way switch in the position labeled `SW1`. .. figure:: images/DBB3.3_13.jpg | `MOT5V` header ^^^^^^^^^^^^^^ Place and solder a two-pin male header in the position labeled `MOT5V`. This header provides a connection to the 5V motor power. .. figure:: images/DBB3.3_14.jpg | `RUN/HOLD/OFF` Switch ^^^^^^^^^^^^^^^^^^^^^ Place and solder the SP3T slide switch in the between the positions labeled `RUN` and `OFF`. This 3-position switch controls power to the processor and the motors. When the switch up in the RUN position power is provided to the processor and motors. When the switch is in the HOLD position power is provided only to the processor. .. figure:: images/DBB3.3_15.jpg | `TTGO` Module headers ^^^^^^^^^^^^^^^^^^^^^ Place and solder the two 18 pin single row male headers in the positions shown. .. figure:: images/DBB3.3_16.jpg .. figure:: images/DBB3.3_17.jpg | Congratulations ^^^^^^^^^^^^^^^ Congratulations your ESP32 DrawBot board is assembled. .. figure:: images/DBB3.3_18.jpg Continue onto to the next part, the Final Assembly.