Raspberry pi PICO ADC reading [closed]

Question

Why not get zero when taking ADC readings on Raspberry Pi Pico? Even though I ground the ADC pin, the analog reading always fluctuates between 10 to 20. How can analog reading be reduced to zero?

Answer 1

Try with startTransaction and commitTransaction. Something like this:

const session = await mongoose.startSession();
session.startTransaction();

try {

  const promise1 = User.create([users[0]], { session });
  const promise2 = User.create([users[1]], { session });
  const promise3 = User.create([users[2]], { session });
  await Promise.all([promise1, promise2, promise3]);

  await session.commitTransaction();

} catch(error){
  // Rollback any changes made in the database
  await session.abortTransaction();

  // logging the error
  console.error(error);

  // Rethrow the error
  throw error;
} finally {
  // Ending the session
  session.endSession();
}