Stages

10-4Make a Small Signal BiggerAmplify a temperature-sensor IC's small voltage with an op-amp so the microcontroller's ADC can read it finely

Power off

Parts

  • Resistor (choose values)2/2 left

Goals

  • At 20 °C, A0 reads 1.00–1.30 V
  • At 60 °C, A0 reads 3.00–3.45 V

Rules

  • Don't damage the ICs (ratings)
  • No short circuits
B15VLM35°CU125°C+−LM35832184U2MCU A0−+GNDIN

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