Custom Teensy 4.1 board

R

Ruturaj

New member
Hi, I'm developing custom teensy 4.1 board for a project. I have made a schematic in Kicad using the schematic diagram available and just wanted to make sure it is correct before I go ahead and add more components. It would be great help if someone could verify the schematic diagram that I've made. If correct, feel free to use it to develop your own boards.

Kicad files.
 
Post an image or PDF if you want more people to look at your circuit, not everyone uses Kicad, nor wants to fire it up just to look at a diagram. If its more than one click people may simply skip the post...
 
Apologies, here's the pdf and the image of the schematic.
 

Attachments

  • Schematic.jpg
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  • Schematic.pdf
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R4 should be 100K, not 470 ohms.

IC1 lacks any GND connections. All VSS, both DCDC_GND, NGND_KEL0, and AD_B0_05 should be connected to GND.

Recommend changing R1 to 470K. See the design changes notes on Teensy 4.1 page. It can work with 100K but startup with lower voltages can be affected.
 
PaulStoffregen said:
R4 should be 100K, not 470 ohms.

IC1 lacks any GND connections. All VSS, both DCDC_GND, NGND_KEL0, and AD_B0_05 should be connected to GND.

Recommend changing R1 to 470K. See the design changes notes on Teensy 4.1 page. It can work with 100K but startup with lower voltages can be affected.
Click to expand...

Thank you! I had missed all the ground connections completely. Here's the schematic with all the changes you suggested. I also wanted to know if I could just de-solder the processor and the bootloader from an existing teensy 4.1 board and use it on the custom board I'm making.
 

Attachments

  • Schematic.jpg
    Schematic.jpg
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  • Schematic.pdf
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Do you have a hot-air rework station? If not I wouldn't imagine you would be successful trying to transplant those chips.
 
MarkT said:
Do you have a hot-air rework station? If not I wouldn't imagine you would be successful trying to transplant those chips.
Click to expand...
Yes I do have one, looking at the datasheet I'm guessing i need 0.3mm balls for soldering the main processor.
 
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