- Video and Audio Section
Next on the list is the Composite GEN, Mono GEN and Audio GEN areas. All the components have been changed to SMT and will tidy them up a little later. As there is more room now to move the Mono GEN components away from the PSU bracket slot.
Before:
After SMT treatment:
H4G - Mongrel SMT Edition
Re: H4G - Mongrel SMT Edition
- RAM SIMM Section
Conversion of the resistors around the RAM (MAD) lines have been converted over to SMT. In addition we have added a MAD10 line out of the SIMM for future use.
Before:
SMT Treatment:
Conversion of the resistors around the RAM (MAD) lines have been converted over to SMT. In addition we have added a MAD10 line out of the SIMM for future use.
Before:
SMT Treatment:
Re: H4G - Mongrel SMT Edition
For people like me who can’t solder, can you add a little spacing between the components?
As it currently is, I think I’d have a hard time with the smt parts so close to each other. I’d get one part on only to lift it off the pad with the iron, while trying to solder on another part.
Maybe not even a problem if the pcbs come with the parts already soldered on.
I understand you will tidy up later - I’m just trying to get feedback to you prior.
Re: H4G - Mongrel SMT Edition
Hi. Feedback is always welcomechue wrote: ↑Thu May 21, 2020 11:55 am For people like me who can’t solder, can you add a little spacing between the components?
As it currently is, I think I’d have a hard time with the smt parts so close to each other. I’d get one part on only to lift it off the pad with the iron, while trying to solder on another part.
Maybe not even a problem if the pcbs come with the parts already soldered on.
I understand you will tidy up later - I’m just trying to get feedback to you prior.
Yes they are a bit close together and need a tidy up but these are the components we are looking to have the pcb fab place on the boards.
Re: H4G - Mongrel SMT Edition
@Icky to have the floppy HD selection work with a gotek it needs a jumper from floppy pin 32 to the drive 0 main board jumper. Is there any chance to get this put in as a lan since this floppy connector pin has no existing connection?
Re: H4G - Mongrel SMT Edition
Sign me up for one. Need a new project! Thanks for all you guys do!!
Re: H4G - Mongrel SMT Edition
@weav - if you want to sign up for one the interest thread is here - https://www.exxosforum.co.uk/forum/viewt ... =89&t=2805 the list is growing.
Re: H4G - Mongrel SMT Edition
- Bus Isolators Section
We have swapped the LS373s and LS244s on the Bus Isolator section for SMT. Again they are routed but need cleaning up. My approach at the moment is to just get these components swapped and some semblance of routing done and then the mammoth task starts on the clean up.
Before:
SMT changes:
We have swapped the LS373s and LS244s on the Bus Isolator section for SMT. Again they are routed but need cleaning up. My approach at the moment is to just get these components swapped and some semblance of routing done and then the mammoth task starts on the clean up.
Before:
SMT changes:
Re: H4G - Mongrel SMT Edition
- Two 74LSxx Chips to SMT
First is the 74LS07 around the reset area
Before:
SMT changes:
Second the 74LS02 around the YM2149 and MAX238
Before:
SMT changes:
First is the 74LS07 around the reset area
Before:
SMT changes:
Second the 74LS02 around the YM2149 and MAX238
Before:
SMT changes:
Re: H4G - Mongrel SMT Edition
- Video Buffers Rework
@exxos reworked the video buffers to work with mono properly. There was a suggestion of using the unused lower bits to improve contrast which has also been taken into account.
Before:
After:
@exxos reworked the video buffers to work with mono properly. There was a suggestion of using the unused lower bits to improve contrast which has also been taken into account.
Before:
After: