Hi all.
I am building a project using the Teensy 4.1 that will log data from a 125ccm shifter kart and that will also be used as an Walkie-Talkie to communicate to the pits.
Because of space restraints I decided to try to solder the Audio shield components myself directly on the PCB I designed. (I also bought some PJRC Audio Shields just in case. If you have the space, I highly recommend buying the Audio Shield because hand soldering everything is not that easy )
The problem is that as it stands now, the audio is not working. Here is the schematic I used:
I am trying to use mobile headphones (Samsung) connected to an audio jack. It all works when I use the PJRC Audio shield. But when using the PCB i designed the audio does not work.
You can find my project here, where you will be able to see the different layers of the PCB with the connections.
I used the schematic for the Audio shield from the PJRC website leaving out the areas marked in pink.
I checked and the 3.3V is present, the 1.8V on pin 30 of the SGTL5000 is present.
When I power the PCB, I can hear a very short crackling sound in the headphones (like unplugging a microphone while the volume is still on). The Hardware test in the Arduino IDE examples is Serial printing the Beep1, but I cannot hear the beep in the headphones.
I think the soldering is not the problem (done manually). Here is the soldered chip:
Am I doing something wrong? Is it a problem leaving some pins of the SGTL5000 chip unconnected? Any help would be very much appreciated.
Thank you very much.
I am building a project using the Teensy 4.1 that will log data from a 125ccm shifter kart and that will also be used as an Walkie-Talkie to communicate to the pits.
Because of space restraints I decided to try to solder the Audio shield components myself directly on the PCB I designed. (I also bought some PJRC Audio Shields just in case. If you have the space, I highly recommend buying the Audio Shield because hand soldering everything is not that easy )
The problem is that as it stands now, the audio is not working. Here is the schematic I used:
I am trying to use mobile headphones (Samsung) connected to an audio jack. It all works when I use the PJRC Audio shield. But when using the PCB i designed the audio does not work.
You can find my project here, where you will be able to see the different layers of the PCB with the connections.
I used the schematic for the Audio shield from the PJRC website leaving out the areas marked in pink.
I checked and the 3.3V is present, the 1.8V on pin 30 of the SGTL5000 is present.
When I power the PCB, I can hear a very short crackling sound in the headphones (like unplugging a microphone while the volume is still on). The Hardware test in the Arduino IDE examples is Serial printing the Beep1, but I cannot hear the beep in the headphones.
I think the soldering is not the problem (done manually). Here is the soldered chip:
Am I doing something wrong? Is it a problem leaving some pins of the SGTL5000 chip unconnected? Any help would be very much appreciated.
Thank you very much.
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