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Old 22-12-2016, 04:54 AM
flolic (Filip)
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flolic is offline
 
Join Date: Jul 2016
Location: Split, Croatia
Posts: 48
Quote:
Originally Posted by luka View Post
1. There is a strong vertical line on the left hand side. Actually there are other weaker vertical lines throughout the images. See attached image 1. On the Ukrainian forums it was noted that the vertical lines should go away once the sensor gets cooled. I am not sure about the big line. Pat, from memory you fixed this by using a larger capacitor C30=330uF, 6.3V. We have used 3x100uF ceramic capacitors so hopefully we are in the clear. If needed we could even boost this to 3x200uF ceramic (E14 has stock of those).
Horizontal driver (DD8) is not routed correctly on your board(s). What is wrong is component placement. Decoupling capacitors should be placed the shortest electrical way to supply pins (pin 9 and pin 16). On your board the ground is totally messed up.
You can put ten more capacitors parallel to C30, C46 and C47, and that will not help anything. Those capacitors must be placed where they need to be.
Try to solder 100uF ceramic directly to DD8 supply pins with shortest wires possible.


Weaker vertical lines will disappear when sensor is cooled.
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