These are pretty cool. A large white rectangle in the "empty" space would make a nice place to put simple notes. A fine point sharpie would be best. A little swipe with iso-alcohol would let you reuse the note area id you reuse the boards.

Beautiful little PCB! The only additional part needed would be a feedback capacitor across the feedback resistor, because in my experience I have found that some Opamps are unhappy without one. I use a cap of 22pF to 100pF, depending on the circuit needs. It helps prevent oscillation at MHz frequencies...

Great idea and matt finish looks good. A suggestion for the next version could be to have Berge pin connectors in parallel to a few components that can be used to short the specific component on the same board eg. The input cap for ac,dc use like the pc card jumpers. Thanks for sharing.

Very cool. I'm new to solid state electronics, and just started playing with op amps and breadboards. This really lays it out clearly.

That is such a cool idea!!! OMG I wish I had something like this when I was trying to get my head around Op amps.

This is so cool. Ordered some boards to play with. Neat project man

What a great idea! I love test boards, so this is a great video / idea. Thanks for sharing!

Excellent idea! Reminds me of the AA5 radio board that was in W2AEW's "Scopes for dopes" series.

That is a gorgeous board! I'd be happy with that too. I tried once to put singe-pin sockets on a learning board like that, that way I could pop resistors and capacitors in and out, but never got something that would snugly accommodate all the various small-diameter component leads. I tried collated single-pin sockets; leads were always too big or too small (Mini-Mill brand). Tried cutting some DIP sockets apart (nope, large round leads deformed them after one use), and then taking the dual-leaf socket out of the plastic, that didn't work at all. The best result was square Dupont 2.54mm headers, that seemed to accommodate the widest range of lead diameters.

What a fabulous idea..great training also a development aid

brilliant !!! how do you come up with such great ideas? Nice job!! I am sure this one will cascade into many variants for other uses !

One suggestion for another revision would be to add a resistor leading into the non-inverting input for the inverting amplifier schematic, so you can make a difference amplifier

Very good teaching aid indeed...cheers.

Quite clever and useful! Kudos! Suggestion = Pin header strips can be purchased with female sockets. Cut and solder individual sockets for each of the needed discrete component (resistors, caps, etc.) pins. Now, each component can simply be plugged in. Various component values can be tried and the whole board can be easily reused/reconfigured, without soldering. Using ZIF sockets for the op amps would be handy, too. Warning = OSH Park's black boards come with a clear solder mask. Meaning, the copper traces show through. Meaning, the face of the board is not totally black. I didn't catch this difference, when ordering from them, and the boards were quite ugly, IMO.

What a great idea!

That's a great idea 💡

Very well done. cool

Love it.

Brilliant

I wonder if you could have put the voltage divider at the top - where the power source is? Or is there a small mod to the board you could make to allow for adding a virtual ground without the "bodge resistors". I love the "self-documenting" schematic on the PCB. More people need to do that.

Thank you for great learning project. do you have the list of the components that used in your video?

I bought 10 of these and they are very well made. The only complaint is that if you ac couple the input into the non-inverting amp, there's no dc path for the input bias current. I've had to add a resistor between the non-inverting input and ground whenever I want to use an input capacitor. Perhaps revision 1.1 might include the missing tracks?

Handling unused Op Amp pin conditions The "TI Design Guidelines for Devices with LM324/LM358 Cores (Rev. A) Section 7 - Unused Amp Connections and Inputs Connected Directly to Ground" provides good information for anyone just using one of the two op amps in a package. It shows how to protect the unused op amp with suggested pin configurations for single-rail and split-rail. With this board it is easy to put the unused op amp into a linear state with just resistor(s) and jumpers.

no practical integrator but practical differentiators ... one can always solder a cap on the feedback resistor?

very good idea, is it possible to put trim resistor to play with gain ?

Why from the bottom side doesn't exist ground just some tracks?

Through hole to boot. Maybe I'll fork it and add smd pads

In school, I had a reputation for blowing up op amps. I wasn't proud of this, or particularly clumsy. I still don't know why and I DON'T CARE! But 40+ years ago,it was a big deal. What a very useful learning tool! I like your boards. If I were teaching undergrad EEs in Engr 335 (or whatever), this board would be on my list of required lab hardware. Here's a practical suggestion -- leave a little more space between Input leads -- perhaps the "distortion" is x-talk or just noise. Anyway, some of those guide holes are very close together for these fat fingers on hands that suffer from mild to moderate neuropathy. Otherwise, Primo!!!

Hi, Can one cut out each of the 4 locations to make 4 separate PCB projects?

The way you "jump" the Vs- and GND, does it not make the 2 VS- to GND caps at the Op Amp useless - or do they serve a purpose?

Very ingenious... I hope got a patent...

so how do i get one of these??? :)

😃👍👍👍👌👌👌🙏

Ordering from PCB way is not for beginners. Never succeded in ordering !? Wunder if they should put a 4th degree equation onto the ordering page for completing the complexity?

I guess nobody has heard of breadboards.