[HELP] My PCB doesn't seem to read the microcontroller

Projects General Guidance
1

Hello. I made 4 PCBs in order to communicate with each other using the Decawave DWM1000 module. I connected every module to an ATMEGA328P-PU microcontroller and then, the microcontroller to the FT232RL usb module, which in turn I connected to a microUSB. Between the FT232RL module and the microcontroller I put a Bluetooth module. The Bluetooth module works, it flashes all the time. However, when I connect the PCB boards to the computer and try to upload a program on the microcontroller in Arduino, I get the error "programmer is not responding". I don't know what I could do. I checked the connections and they look ok.

Also, on the serial monitor there is no data, it should have been some data in order to see some communication between at least 2 PCBs.

Please..any help? Any ideas?

2

From the info You provide I doubt any helper canl se the fault. Attach a block diagram, a wiring diagram and code using code tags, upper left symbol in this window.

3

Did you program the bootloader into the atmega328P chips?

4

Is the bluetooth disconnected while programming?

Are the resistors to the Rx and Tx of the atmega328 100K? That sounds awfully high, if the bluetooth or FT232 have pullup resistors on the inputs you will never get enough drive from the Tx line on the atmega328.