HP97 The journey begins
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09-21-2021, 03:45 AM
Post: #422
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RE: HP97 The journey begins
Hmmm
The journey might be ended. While testing the printer, I noticed some variation in the printing width and while trying to figure out why, I realized that I miss read the data sheet for the motor driver IC that I chose. It is for DC motor control in battery powered equipment and I thought it compensated for motor torque variations but it doesn't - only for battery voltage changes to try and maintain a constant rpm. Unfortunately, to add this extra functionality means more testing and then hopefully a working PCB re-design, and then software changes. Because it is hard to prototype with surface mount bits and pieces, I have already spent quite a lot on development and even though I never wanted a profit out of the project, I am not sure I can continue to throw any more at it. I will have to sit down and have a think. :-( cheers Tony |
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