Hi Everyone,
I am having issues with a prototype project I am working on. I am using a Teensy 3.6's USB Host port and a MAX3232 RS232 converter to receive keys from a HID device and convert them to a RS232 serial control strings. Everything works fine while I am powering the Teensy via the micro USB port and I am able to use the micro USB to debug the serial output. The ultimate goal is to power the Teensy from a 5Vdc external DC supply that comes from the same device as the RS232 is being sent to.
On the breadboard I have picked up the external 5Vdc feed (verified with a multi meter) and a common ground (into the ground beside pin 13) and feed this into the Teensy 3.6 on pin 1 (VIN). This does not seem to work for some reason. I cut the link between the VIN & VUSB pads and then the only way I can power the board is if I have both the VIN power input and the micro USB connected. I have confirmed that there is power on the VIN but the teensy is not running.
I have worked through the circuit layout for the board and it all looks like it should work with the VIN power. I re-soldered the VIN & VUSB pads together and removed the VIN feed and I am back to being fully operational.
Am I missing something ?
This is my first project with a Teensy board but I have done lots with basic Arduino's etc in the past.
Any assistance or direction would be greatly appreciated.
Regards
I am having issues with a prototype project I am working on. I am using a Teensy 3.6's USB Host port and a MAX3232 RS232 converter to receive keys from a HID device and convert them to a RS232 serial control strings. Everything works fine while I am powering the Teensy via the micro USB port and I am able to use the micro USB to debug the serial output. The ultimate goal is to power the Teensy from a 5Vdc external DC supply that comes from the same device as the RS232 is being sent to.
On the breadboard I have picked up the external 5Vdc feed (verified with a multi meter) and a common ground (into the ground beside pin 13) and feed this into the Teensy 3.6 on pin 1 (VIN). This does not seem to work for some reason. I cut the link between the VIN & VUSB pads and then the only way I can power the board is if I have both the VIN power input and the micro USB connected. I have confirmed that there is power on the VIN but the teensy is not running.
I have worked through the circuit layout for the board and it all looks like it should work with the VIN power. I re-soldered the VIN & VUSB pads together and removed the VIN feed and I am back to being fully operational.
Am I missing something ?
This is my first project with a Teensy board but I have done lots with basic Arduino's etc in the past.
Any assistance or direction would be greatly appreciated.
Regards