PCB Prototype $2 for 10 PCBs (Any Color): https://jlcpcb.com
https://www.patreon.com/julian256
This PCB displays 8-bit binary data on an 8-segment LED bar and also in hexadecimal on a pair of 7-segment LED displays.
https://easyeda.com/julian256/Binary-Hex-Display
https://www.patreon.com/julian256
This PCB displays 8-bit binary data on an 8-segment LED bar and also in hexadecimal on a pair of 7-segment LED displays.
https://easyeda.com/julian256/Binary-Hex-Display
Two questions: Do they still make these and has anyone considered replacing the HC573N with a 74AHC8541N?
I like JLCPcb! But use led display holder 🙂
As they say… "You don't solder a TIL311, you don't socket it either. You rent it!" I wonder what happened to those 20-30 pieces in storage at my first employer… But then again, this was some 26+ years ago… Back then, I built a POST card on ISA bus (0x80) with a pair of them (pretty much of what you have done here)… Would you reconsider and make public, free and unlimited use of the schematic (no brainer) along with the PCB and Gerber files if I lend you "sine die" a pair of TIL's?
Thanks. I'm embarking on an 8-bit computer build inspired by Ben Eater's and James Sharman's builds. I was thinking of designing a little board like this, but now I don't have to. I just ordered a batch from JLC.
One question: while watching you assemble it, I was wondering why you didn't put the MC14495 chips on the back, so you didn't have to stack the 7-segment displays on top of them. Too difficult / impossible to route the traces because everything is backwards?
Many years ago we used a typewriter rubber (eraser) to clean component leads. Try to find one now! Just a thought, I might have been tempted to use the bar graph like x0000x0000 the two bytes are clear (to my old eyes) x = the blacked-out LEDs. lol
Is it 340 C cold for soldering the IC??
I know you can change the thermal relief design (spokes) in Eagle.
Also, how come you have your soldering iron so hot? I'm sure my Weller is 270 ISH and works well. Just curious and learning.
Keep up the great videos, love them
7 segment digits … You'll be looking at these from 'above' … Leaning forward might not be as desirable as leaning backward 😉
What's the point of using 4 ICs when you can use a single $0.5-$1 16-28 pin micro? You could optionally add button to switch between hex/dec which would also save you the hassle of custom pcb, making possible to order panels and use vscoring to cut rectangle circuit boards…
Great work Julian, Always a pleasure watching your videos. 20% of the time I haven't a clue what you're talking about but it's all good homework for me! 🙂 Keep them coming.
Ilett
$2 for 10 PCBs & 24 Hour Production?! How on earth is that possible?
I see you get the JLCPCB pen… 🙂
What do you think of designing a drone frame with easyeda then bolting the motors directly to the board?
Hi Julian, what software do you use to make the gerber file?
Next revision should use the outside LEDs and not use the the middle LEDs, creating separation of the binary segments and allowing easier reading of the bar display.