Comm Expansion Configuration icon Comm Expansion Configuration — Configure EZ-B v4/2 Comm Expansion: switch between UART transparent proxy and USB direct PC link (avoids WiFi); EZ-B needs separate power. Try it →
Tutorial
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Steps

  1. Parts Needed.
  2. Schematics.
  3. Step 1. Method:
  4. Step 2.
  5. Step 3.
  6. Step 4.
  7. Step 5.
  8. Step 6.
  9. Step 7.
  10. Step 8.
  11. Step 9.
  12. Final Step.

Tip120 & Tip122 Transistor Switching Circuit

Step 9 of 12
Step 7.

Adding the Diode.

If using the circuit for a motor or other inductive load a diode needs adding between the transistor Collector and Emitter. This is easily added in to the previous circuit.

11.) Bend the leg on the Diode so it will fit though 0.1" hole spacing

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