No. Your out of court testimony would be what is termed "hearsay". The judge is not allowed to consider it. You must appear in court if you wish to present any testimony. That is the way court works in the United States.
You can reach Harkess & Salter LLC by phone or email. Stephen Harkess is an attorney licensed in the state and federal courts of Colorado. This answer is for general information only and does not create an attorney client relationship between Stephen Harkess or Harkess & Salter LLC and any person. You should schedule a consultation with an attorney to discuss the specifics of your legal issues.
Mr. Harkess is correct. If you want evidence to come in to court, you need to have people testify in front of the judge live and to be subject to questioning by the opposing side.
The information provided in this answer does not create an attorney-client relationship and is not considered to be legal advice.
It is never a good idea to skip a court date. Doing so only makes it infinitely easier for the other side to persuade the judge. Skipping the court date creates this idea that you too believe the other side is right, so it isn't worth your time contesting the matter. Finally, it is disrespectful to the court, and the judge would be less inclined to give you a break later down the road.
In answer to your question, there is no mechanism for simply providing written testimony to the court. Sometimes a motion, requesting that the court take specific action, can be accompanied by supporting affidavits (a form of written testimony) relevant to the motion. But a court will not accept an affidavit submitted by itself in substitute of live testimony at a hearing. The entire point of the hearing is for the court to see, hear, and understand you and for the other side to have the chance to cross examine your testimony to test its veracity. None of that can be accomplished via an affidavit. In sort, once the court determines that a hearing is need, the whole point is to have live testimony.