draft for donut board (aka "pad" or "matrix" board)

[zimin]

Title edited to clarify "donut board"

---

I would like to connect the LM324(below) to the STM32F103C8T6 on a donut board, purpose to read four IR receivers. VR with highlight T shape is preset 103. IR1, IR2, IR3, IR4, 5V and ground will connect to a 6 pin header, connect to another donut board which contains only 4 groups of IR transmitters and receivers.

My task is without jumper wires connect them together but I can’t connect it due to the preset 103 make the circuit too messy. Can anyone help me please.:folded_hands:

[AScha.3]

Not clear, what you want to build : IR receivers - which one ? type, name , ds ...

+

for IR remote - or what ?

[zimin]

 

I think that is not important, I’m new on this, I want to build a follow line autocar, these will be the sensors.

These two pictures are two drafts of donut board. I want to connect the circuit on donut board without using jumper wires. Others I have already connected. Only the LM324(circle with red pen) I can’t connect due to too many preset 103 need to connect with 5V and GND and there is no way to connect “input+” on LM324

[Andrew Neil]

---

@zimin wrote:

a donut board

---

A what ?

Also unclear what you're trying to achieve, and where you're stuck?

Do you have a schematic (aka "circuit diagram") of what you're trying to build?

It would help if you posted the images in correct orientation so they're easier to read.

Remember that we know absolutely nothing about you or your project - so you need to explain things clearly & completely.

How to write your question to maximize your chances to find a solution

PS:

When you say "donut board", do you mean something like this?

[TDK]

If you want to connect things without jumper wires, you'll have to make a custom PCB using a program such as KiCad, create that board, and then solder components to it.

[mƎALLEm]

---

@Andrew Neil wrote:

---

When you say "donut board", do you mean something like this?

---

I think it's the case:

https://qqtrading.com.my/stripboard-9-x-15cm-donut-board 

[Andrew Neil]

---

@mƎALLEm wrote:

---

---

I think it's the case:

---

Thanks.

More commonly known as "matrix board" or "pad board".

@zimin In that case, I don't understand what you mean by, "without using jumper wires" ?

All of the pads are isolated on this type of prototyping board - so the only way to build a circuit is with "jumper" wires to connect things together!

Here's one I'm using at this very moment:

 

PS:

Some more examples here.

[zimin]

Yes, that’s what I said “donut board”

My task is connect LM324 to STM32, preset 103 and four of the “input+” connect to 6 pin header (another 2 pin is for 5v and gnd). Connecting them on donut board without jumper wires, only soldering.

Problem I’m facing is each preset 103 need to connect to 5v, gnd and “input-” on LM324. When four of them connect to 5v and gnd, there’s not enough space to connect others pin.

 This image is incorrect because four “input+” didn’t connect to 6 pin header.

Target:

LM324 Output(4) > STM32 pin(4)

LM324 Input-(4) > preset 103(4) > 5v, gnd

LM324 Input+(4) > 6 pin header(1)

V+ > 5v

V- > gnd

[zimin]

I haven’t learn this yet. I need to connect them on donut board by soldering.

[zimin]

This is an example but my task more difficult because more component used. My lecturer don’t want the circuit is messy so don’t allow to use jumper wires I think, and it might be a challenge on soldering.