tag:blogger.com,1999:blog-3700830735032336522.post4124960658800054467..comments2024-02-28T21:16:03.905-08:00Comments on exxos news blog: PAST V2 BOOSTER PROTOTYPES exxoshttp://www.blogger.com/profile/06022187065553994274noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-3700830735032336522.post-32913057671887458582017-07-11T03:28:34.275-07:002017-07-11T03:28:34.275-07:00Those green ones "went wrong". Though e...Those green ones "went wrong". Though everything which didn't make it to production either went wrong or never got finished. <br /><br />Its just how things are. Design something as best you can. Then iron out all the bugs, do a second PCB, then find more bugs and iron them out.. Normally each project I do will have 3 or 4 versions of the same thing which didn't work as expected.<br /><br />When it can cost £50-£200 for a run of PCBs. Mostly they just end up getting binned as just can't use them :( Then I have to factor that "loss" of money into the final selling price of the kit. <br /><br />Even the final V2 booster had 2 "mistakes" on it. I had trouble with the GAL as some pins could only have 10 "gates" on it. I needed 11 for one pin. So its why the GAL on the right basically has 2 pins swapped because at the time I didn't know about the limitations on various pins. Of course 6 layer boards costing like £30 each and 25 of them.. I couldn't really scrap those boards.<br /><br />I think there was several versions of that booster which was built. I have many more design variations of it in my PCB software as well. <br /><br />I guess it can be like 20 designs, where 7 got real PCB's made and 1 made it into a production kit. I have to keep tabs on all these PCB costs.. its just become a nightmare.<br /><br />Its why I think its just time to move onto a new motherboard and have done with a lot of problems. Its just become tiresome to design something, then spend months trying to work out why it doesn't work because of some noise on some signal on the motherboard. Not only that, but I'm getting rather bored of spending endless hours doing PCB designs.exxoshttps://www.blogger.com/profile/06022187065553994274noreply@blogger.comtag:blogger.com,1999:blog-3700830735032336522.post-12958957533076052792017-07-11T02:18:18.942-07:002017-07-11T02:18:18.942-07:00Love seeing prototype pics of stuff :)
Do you hav...Love seeing prototype pics of stuff :)<br /><br />Do you have a collection of boards that went wrong or never made it to production, the story behind the attempts are interesting.DrFhttps://www.blogger.com/profile/17262713669916141002noreply@blogger.com