PCB Recomendation

#1

I am almost at the stage of getting a PCB made for the cubecell.

This is my first time designing a pcb, so I am not sure if I have done everything correctly or not.

A couple of questions:

  1. Is it okay to run traces underneath the CubeCell module, or do I need to keep that area clear on the top? I have kept it clear where the solder is from the shield.

  2. should I be modifying the trace width from standard for the antenna trace? does this need to be kept to 50 ohms? If so, is there an easy way to calculate the impedance at 433MHz, based on trace thickness and length?

  3. I intend to program with Arduino IDE. Am I correct in assuming that all I need are the RX, TX and GND connected to a UART to USB converter cable?

Sorry about all the newbie questions, but this is a steep learning curve for me.

Thanks

pcb
pcb.jpg843×1033 300 KB
SCH_Schematic1_0-P1_2022-11-23
SCH_Schematic1_0-P1_2022-11-23.png1170×825 63.1 KB

#2

Hi
I would rotate module clockwise 90 and antenna 180 so connection between RF output pin and antenna will be as short as possible and there are minimum traces around.
Rgds