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board to board power connection
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Leopardi 1 week ago
Hello, I am making a Charge Discharge Project for 18650 batteries.  I am using TP4056 and ZB2L3 modules.  The idea is to make a PCB that can be stacked one next to each other and be able to make them work using the same power source.  I have been searching for a good solution for many days but cant find something appropriate.  I want to create a connection to PCBs so they can use the same power supply. Here is a link to the project: [https://oshwlab.com/leopardi/battery-capacity-charge-discharge_copy](https://oshwlab.com/leopardi/battery-capacity-charge-discharge_copy)<br> <br> Thanks a lot.
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Leopardi 1 day ago
andyfierman 3 Ampers per pin, understood. thank you for the lesson!
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andyfierman 1 day ago
Check the current rating in the datasheet: [https://datasheet\.lcsc\.com/lcsc/1811092011\_BOOMELE\-Boom\-Precision\-Elec\-C49661\_C49661\.pdf](https://datasheet.lcsc.com/lcsc/1811092011_BOOMELE-Boom-Precision-Elec-C49661_C49661.pdf)
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Leopardi 1 day ago
andyfierman I am replying now without the @ sign. I dont want to connect the board using male and female pin headers because this would meanthat I would habe open contacts (the male headers) from the side that is not connecter. So I will go with the second option, 4 female pin headers (2x 2pin female) on each side, 2 for GND and 2 for 5V.  And the will connect them somehow....   This U-shaped pins we saw at the illustration I coudnt find to buy yet..  and actually i need it printing the PCB, to make sure the measurements are precise. So if I use the C49661 ( [https://lcsc\.com/product\-detail/Female\-Headers\_BOOMELE\-Boom\-Precision\-Elec\-C49661\_C49661\.html](https://lcsc.com/product-detail/Female-Headers_BOOMELE-Boom-Precision-Elec-C49661_C49661.html) ) as described, 2 in each side, 2 pins for GND and 2 Pins vor +5V will it take 6amps? or these are not the right pin headers? Thanks a lot!
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andyfierman 1 week ago
leopardi, Please ignore this post. It is a test post to see if removing the @ symbol in the reply name stops the incorrect "Post Failed! Network Failed!" error warning. This would work or use right angle male and female headers? 5V is not a problem. 6Amps can be dealt with by parallel pins, such as using aa 4 pin header with 2 x ground and 2 x 5V pins. Also look at: [https://lcsc.com/products/Mezzanine-Connectors-Board-to-Board_960.html](https://lcsc.com/products/Mezzanine-Connectors-Board-to-Board_960.html)<br> <br> ![Screenshot 2022-06-21 at 12.06.02.png](https://image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png)
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andyfierman 1 week ago
@leopardi, This would work or use right angle male and female headers? 5V is not a problem. 6Amps can be dealt with by parallel pins, such as using aa 4 pin header with 2 x ground and 2 x 5V pins. Also look at: [https://lcsc.com/products/Mezzanine-Connectors-Board-to-Board_960.html](https://lcsc.com/products/Mezzanine-Connectors-Board-to-Board_960.html)<br> <br> ![Screenshot 2022-06-21 at 12.06.02.png](https://image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png)
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andyfierman 1 week ago
Please see this Bug Report: [https://easyeda.com/forum/topic/False-warning-of-Post-Failed-Network-Failed-1952ef73181746f1917f9b58719a3cdf](https://easyeda.com/forum/topic/False-warning-of-Post-Failed-Network-Failed-1952ef73181746f1917f9b58719a3cdf)@leopardi
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Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)
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Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)
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Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)![Screenshot 2022-06-21 at 12.12.51.png](//image.easyeda.com/pullimage/f686CwkaJEkIsYN9bXJ5ObxQk3PjpG13ggD2i0vt.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)![Screenshot 2022-06-21 at 12.12.51.png](//image.easyeda.com/pullimage/f686CwkaJEkIsYN9bXJ5ObxQk3PjpG13ggD2i0vt.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)![Screenshot 2022-06-21 at 12.12.51.png](//image.easyeda.com/pullimage/f686CwkaJEkIsYN9bXJ5ObxQk3PjpG13ggD2i0vt.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)![Screenshot 2022-06-21 at 12.12.51.png](//image.easyeda.com/pullimage/f686CwkaJEkIsYN9bXJ5ObxQk3PjpG13ggD2i0vt.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)![Screenshot 2022-06-21 at 12.12.51.png](//image.easyeda.com/pullimage/f686CwkaJEkIsYN9bXJ5ObxQk3PjpG13ggD2i0vt.png)
Reply
Leopardi 1 week ago
@andyfierman  Thank a lot for the input. I apreciate the stacking idea, but in this case would not work so well for me.      I did searched for headers but really didn't find anything what would work.  I thought would be possible to make something like in the image below. But the connection would need to stand up to 6Amps and 5V![Screenshot 2022-06-21 at 12.06.02.png](//image.easyeda.com/pullimage/I07m94cZi7cOR2nd7inhV73cF19CRlqcAoHrBY0q.png) I found also this images on internet. but I can´t find the parts in LCSC: ![Screenshot 2022-06-21 at 12.09.20.png](//image.easyeda.com/pullimage/75tNUzm0OlIMjfIPExfmyZtLwuhaUJQnWeHHW9FK.png)![Screenshot 2022-06-21 at 12.12.29.png](//image.easyeda.com/pullimage/EfKXGVB4ZeQJHOWkrwHPC2kiXRMm1d0S4fyle1XS.png)![Screenshot 2022-06-21 at 12.12.51.png](//image.easyeda.com/pullimage/f686CwkaJEkIsYN9bXJ5ObxQk3PjpG13ggD2i0vt.png)
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andyfierman 1 week ago
3 suggestions: Search [https://lcsc.com/products/Pin-Headers_644.html](https://lcsc.com/products/Pin-Headers_644.html) for male headers with long pins and [https://lcsc.com/products/Female-Headers_645.html](https://lcsc.com/products/Female-Headers_645.html) for female mating halves. If you can find female headers with long pins then you can stack the boards like this: ![](https://mail.google.com/mail/u/0?ui=2&ik=aa87c90240&attid=0.1&permmsgid=msg-f:1691035806092581202&th=1777c41b2c9d5952&view=fimg&fur=ip&sz=s0-l75-ft&attbid=ANGjdJ--rX8VXTo9WDcy2HDS3eI4JpN60riVEB68-AyZ4Ie6mWLi5Dm1eOpafWgEj3K7D-n3dtPBWR0nYb1UUxjqMGjkBGIDXMHfyY5jREXz7hHy43H_SLgLWcgtle4&disp=emb&realattid=1777c3a3f08fbda84f31) Make the boards so that they have a board edge connector at one end and then design a motherboard/backplane that they all plug into like a toast rack. A bit like this (ignore the voltages and master/slave board names: it's from a completely different project): ![image.png](//image.easyeda.com/pullimage/3AZweCBkLKkRj5h5F54hOHAC0HluOCzHhwwfN5jG.png) Use two of the mounting holes on each board: one as the supply and the other as ground then use long bolts/threaded rods and or standoffs as the power connectors between the boards in a toast rack assembly;
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