SpoolerBUILD PORTAL

Step 4Electronics

Power
inputUSB-C, USBLC6 protection
chargingTP4056, 1 A
battery18650 / 26650, DW01 protection
source selectideal diode LM66200
3.3 VTPS631000 buck-boost
Control and peripherals
processorESP32-C3-MINI-1, native USB
I²COLED display, RTC MCP7940N
encoderAS5600 analog, comparator MCP6546
input/outputbutton, buzzer
switchAP2191 cuts the peripherals

The control board carries the ESP32, the buzzer and the USB-C. Four connectors are plugged into the board.

The control board with labelled connectors
The board in the holder BOARD_HOLDER: battery, button, OLED, encoder
ConnectorPinsConnects to
BATTERY2, largeBattery holder 18650 / 26650
BUTTON2The button in the encoder head
OLED DISPLAY4Display 0.96"
ENCODER5The AS5600 board

Cable routing in the photos

The battery holder in the arm with the red and black cable routed
The battery holder, the cable routed in a channel and fixed
The board in its holder with the cables
The board in its holder, the bundle of cables going to the encoder head
The encoder head with the AS5600 board
The back of the head: the AS5600, the cables fixed
The encoder head from the front with the pusher
The front: the pusher, the wheel and the button
An overall view of the assembly in progress
The whole assembly before the arms are closed
  1. Connect the battery and put it into the holder. Lay the cables in the channel and fix them (in the photos with small drops of glue or tape).
  2. Connect the display, the AS5600 and the button to the connectors of the board as described above.
  3. Lead the bundle of cables from the encoder head to the arm with the board and leave some slack for opening.
  4. Before you close the arms check that no cable is pinched in the joint.
The video opens after you buy this guide.
Wiring and cable routing