How to Pass the Scrum.Org Professional Scrum Master Certification Exam In One Week

There are many Scrum certifications available but the two most popular certifications are’s Professional Scrum Master (PSM) and Scrum Alliance’s Certified Scrum Master (CSM). Both organizations’ Scrum Master certification have 3 levels. Below are their differences.

Course Cost$500-1000 depending on providernot required
Certification Cost2 attempts included in course cost
$25 for every additional attempt
$150 per attempt
Exam stylemultiple choice, 50 itemsmultiple choice, 80 items
Time limit60 minutes60 minutes
Passing Score74%85%
Validity2 years, $100 to renewLifetime

Based on these factors, I decided on PSM. I’ve been applying Agile and Scrum principles for years now so I don’t feel I need to go through a 2-day course. Plus PSM makes more sense from a long-term cost perspective. However, it is harder with a shorter time limit and a higher passing score.

With that difficulty level in mind, here’s what I did to prepare (and pass) the certification exam. Depending on how much time you have available, this should take a total of about a week or two:

  1. Read THE Scrum Guide. I did this [almost] every day. This is very important as Scrum in practice has quite a few variations but PSM I focuses on the official definition of Scrum as authored by Ken Schwaber and Jeff Sutherland. You may actually need to unlearn some things. I used the PDF version so I could highlight key terms and concepts. In addition, I wrote down the terms and concepts into a separate note.
  2. Read’s Scrum Glossary. To further familiarize with the terminology.
  3. Go through’s Scrum Master Learning Path resources. For PSM I, you only need to focus on the Understanding and Applying Scrum section.
  4. Go through Kelly O’Connell’s Scrum-related courses at LinkedIn Learning. These require a subscription but is optional as they cover basically the same stuff as above.
  5. Go through’s Scrum Tapas videos. The audio is awful but it does a good job of summarizing things. This is an alternative to Kelley O’Connell’s courses.
  6. Take’s Scrum Open assessment. I did this at the end of every day. Take note that the Scrum Open is a smaller subset of the topics and questions. It does not completely represent the certification exam. However, it is an adequate simulation of the exam experience. Once I consistently got 100% in the Scrum Open, I decided I was ready.

The next step is purchasing the assessment voucher and then taking the exam.

Good luck!

Flysky i6 and Crazybee Quickstart Guide

This is a newbie’s quickstart guide for the Flysky i6 transmitter (TX) and the Happymodel Crazybee flight controller (FC). The guide assumes that you have a fresh Crazybee-based whoop build or bind-and-fly (BNF) such as the UR/S/K65, Mobula6, or Moblite6.

We will bind the Flysky i6 to the receiver built into the Crazybee. Binding simply means pairing the Flysky i6 so that it will be able to control the Crazybee.

      1. Press and hold the bind button on the Crazybee and plug in the battery. Watch for a blinking red LED which indicates the Crazybee is in binding mode.
      2. Press and hold the bind button on the Flysky i6 and slide the power switch on. Watch for a solid red LED which indicates the Crazybee is now bound.
      3. Depending on your board and firmware version it may be a blinking red LED at the start and then solid red LED once bound or vice versa. That is, solid red LED at the start and then blinking red LED once bound. The key is to observe if the LED behavior changes when you bind on the transmitter.
      4. Power off both the Flysky i6 and the Crazybee.

We will now assign radio channels to controls. Assigning channels allows controls to send radio signals when operated by the pilot. For this guide, we will simply assign Channel 5 to SwA and Channel 6 to SwC

        1. Power up the Flysky i6
        2. Select Functions setup
        3. Select Aux. channels
        4. Change Channel 5 source to SwA and Channel 6 to SwC. This assigns the switches for arming and selecting flight mode (angle/horizon/acro), respectively.

          If everything is correct, you should now be able to power up your quad, power up your transmitter, select flight mode using the mode switch (SwC), flip the arm switch (SwA), and take-off!