UPDATE 22-Jul-2013: we finished new PCB design and made tests that were positive. New PCBs and components are ordered, we will do our best to start shipping for opened pre-orders end of next week.
After-production tests showed that we have problems with design and need to go for one more re-design/production cycle. Therefore, we are returning money for all pre-orders, and will open sales only after the products in stock are assembled and tested.
Last weeks we had real hell here. We assembled first batch of 12 displays and found that almost all of them have serious problem with video synchronization. Others have problems with video colors. It took a lot of time to go through all checkings and tests to figure out that problem is not with schematic, PCB, LCD, components, EMI, but with LCD side connector. Let me show you our current LCD connection – it looks like this when assembled and bonded to bottom side of LCD:
“Finger” part of PCB is used as a mate connector for LCD, it has contact pins on bottom side:
PCB thickness is 1.6 mm, thickness of this “finger” is 0.3 mm.
We ordered third-party CNC milling of “finger” part to reach required thickness. And that’s the source of problem – real thickness is 0.2-0.25 mm and it varies. As a result, some pins don’t have solid contact with LCD connector and we get problems with synchronization and colors. Its pretty clear that we have to re-design this connection part between PCB and LCD. It will take several weeks additionally.
What we are going to do:
I personally receive many emails, tweets and blog comments with requests about release date and status, and we are executing all possible approach to release it as soon as possible. We worked very hard, often stay in office till midnight, and going to continue with this routine until we get it done or turned into Zombies.