Stages

12-3Use a charger ICFill a 500 mAh cell at 0.5C or less with a charger IC, and show the state with red and green LEDs

Power off

Parts

  • PROG resistor (choose one)1/1 left

Goals

  • While charging, only L1 (red) is lit
  • When full, only L2 (green) is lit

Rules

  • Keep BT1 within its limits
  • Charge BT1 at no more than 250 mA (0.5C)
  • Don't burn out the LEDs (25 mA max)
  • No short circuits
USBUSB 5 V5VVCC4GND3BAT5PROG2TEMP1CHRG7STDBY6TP4056U1Li-ion500mAh50.0%L1 redRedL2 greenGreen−+−++−+−

Selected

Press a terminal (the small ◯) to start a wire. Press where you want to bend to place corners, and finish on another terminal or on a wire. Press the middle of a wire and then somewhere else to draw a branch from there. You can drag parts and wires to move them. When you are ready, press "Run!" to turn on the power, and try the switches while it is on.

Line mode

Keys

W
Draw wire
R
Rotate
M
Move
G
Drag
Del
Delete
⌘Z
Undo
⌘⇧Z
Redo
Enter
Run
Home
Fit
H
Hint

Wheel to zoom, right-drag to pan