Episode 1800 start PCB layout, create new footprint www.pcbway.com/project/sharep... Be a Patron: / imsaiguy
Пікірлер: 25
@AnthonyZwygart4 ай бұрын
Having created or edited a pad you can right click on the pad and "Copy Pad Properties to Default". Then select the other pads you wish to make the same, right click and "Paste Default Pad Properties to Selected". Has helped me many times. Thank you for your fantastic videos.
@t1d1003 ай бұрын
Remember to print the footprint on paper at 1:1 scale and proof the pin holes/layout. Remember that inkjet printers do not print 1:1, even when so set. Add a 100mm test line to the Comments layer. Check the Comments layer to also be printed. Verify the 100mm printed line measures true to 100mm. Mine prints short at 98mm, so I set the print custom scale to 102. A light table is very helpful for checking the alignments. HTH.
@simonbaxter80014 ай бұрын
Figure 2 on the datasheet gives you the size for the pins. The SK-207 datasheet gives the base pin diameter as 0.035". So, 0.038" is too small, especially if the hole is plated through! You should be shooting for at least 0.006" larger PCB hole size, so you measured at 0.0375" hole needs to be 0.044". Going off the SK-207 datasheet, the hole should be 0.041".
@gorak90003 ай бұрын
Yeah, a little extra room for solder between the pins and the holes is good too. Usually lead holes have a very loose tolerance on them.
@herbertsusmann9864 ай бұрын
I would have made those nixie holes a bit bigger, maybe 0.042? If annulus on pad doesn't get too thin.
@nickcaruso3 ай бұрын
Really enjoyed this one. Very helpful to listen and watch as you do the KiCAD stuff.
@Mr.Leeroy3 ай бұрын
Having plane pour around 'HV' is probably beneficial in terms of EMC emissions given that you'll be multiplexing, but that potential has to be tied somewhere and probably filtered properly to be effective.
@IMSAIGuy3 ай бұрын
I will not be multiplexing
@AnalogDude_3 ай бұрын
14:43 you could make dedicated "groundplane" for that. I use 0.4064 mm wide tracks and they fit perfectly between the pins of pdib packages, where the via's are 1.6 mm.
@andymouse3 ай бұрын
fascinating schematic layout style, I haven't seen anything like that before. This is a great project idea....cheers.
@peterayearst233 ай бұрын
Click on the pad whose properties you want to use. Then right click and select at the bottom Push Pad Properties to Other Pads...
@IMSAIGuy3 ай бұрын
thank you! didn't know about that one
@dipdoting4 ай бұрын
This is very cool and timely, I've been searching eBay for some Nixies and this is on my project list. Of course, I'll need to use relays as a decoder just because. Love your channel, learned so much from your videos!
@IMSAIGuy3 ай бұрын
a 10 position rotary step relay would be best 😀
@jrkorman3 ай бұрын
I was looking at your trace layout, so pulled out the manual for my old Heathkit IB-1103 counter. Not exact, but damn similar layout. This counter only uses 100V on the Nixie tubes.
@paulmoir44523 ай бұрын
The datasheet for the B5750 has example layouts for the 7441 and... the Fairchild 9660! You need 200V if you're multiplexing, or as the datasheet calls it, "Time Sharing."
@taurnocerostradeguides4 ай бұрын
interesting...
@herbertsusmann9864 ай бұрын
Seeing what you did in KiCad makes me want to stay with the layout package I've used for the last 25+ years: EasyPC. Things like bulk property changes are always possible. KiCad just seems too primitive for any work beyond super basic layouts.
@andymouse3 ай бұрын
Sorry but that simply isn't fair, if you heard me play a piano would you blame the piano ?....I have never played before !! Kicad is far superior to any of that old rubbish you cling too.
@mr1enrollment3 ай бұрын
not having used 'EasyPC' I cannot be too critical, but having used at least 5 or 6 schematic packages over 50 year period - I can say that KiCAD is remarkable. There may be better commercial packages - but KiCAD is impressive and free,... AND it continues to improve. Perhaps 25+ years is a bit too long to cling to one package,... but well each to his own.
@mr1enrollment4 ай бұрын
Note: KiCAD has a calculator,... ".038" way too small. I think KiCAD 8 'may' have bulk editing. Jeese it is not THAT high a voltage,... (I have stories.)
@mikesradiorepair4 ай бұрын
.0375 was the largest pin measured. .038 will definitely be to small. And agreed, that is not high voltage. My HF amplifier runs around 2,500 volts.
@mr1enrollment4 ай бұрын
@@mikesradiorepairYeah I have a spare EC620 which provides 2000 @ 0.2AMP Anyone looking for such a beast?
@IMSAIGuy3 ай бұрын
mike, I bet your board does not have 16mil traces 😀
@mikesradiorepair3 ай бұрын
@@IMSAIGuy No circuit boards in that amplifier. All wire and terminal strips. I recently purchased a Henry 5K amplifier. Need to go through it before I power that beast up. The power supply in that is 4,000V at 1.5A intermittent and 800mA continuous. Runs a pair of Eimac 3CX1200A7 tubes. Going to use that for Army MARS.