TX direction (host → module) is broken on both paths (GPIO and USB). RX (module → host) works only on the GPIO path.
I’ve tried swapping out wires and retesting the connections but still cannot get this to work. Anyt thoughts?
Share a couple photos of the issue…is it physically damaged?
Are you using this model?
thanks your your help! yes i am using that model . This is what i purchased: https://www.digikey.com/en/products/detail/sparkfun-electronics/GPS-28929/26769964
there is no physical damage: photo
I am attempting to wire it up to my Jetson Orin Nano. There seems to be no data transferring over usb and since i cannot mate it to the Jetson I am using jumpers to wire and 8 and 10 pins for TX and RX respectively. Ideally we can just have this transfer through USB ?
The USB connector on the pHAT is designed for GNSS modules that have USB built-in (such as the mosaic-X5 or ZED-F9P). The LG290P does not. The pHAT is designed to connect the GNSS UART directly to the RasPi. You can open a terminal and talk to the LG290P over serial directly, no need for USB connection.
If you need to have a direct USB connection to the LG290P I suggest the breakout board.
@bamarcant It works as-is. The GPIO jumper pads on the Flex are used to isolate signals from the peripheral (Pi, Nano, etc) in the case you’re already using a certain GPIO pin with a 2nd device/module or similar…leave those intact/unmodified unless you have a reason to segment those circuits/avoid bus contenton issues
i have pins 8 and 10 wired up but only the RX connection is working, not the TX. WOuld this imply a faulty module? Or what else should i be checking?
Can you share a photo of the current wiring situation?
It’s generally meant to be mounted onto the Nano’s 40-pin GPIO header
Hi Kaylyn (@Kaylyn_Shibata ),
Please do share a photo of your connections.
As a minimum, you will need to connect:
GND / Ground : e.g. Pin 6
5V Power : e.g. Pin 2
3V3 Power : e.g. Pin 1
GNSS RX1 : GPIO14, Pin 8
GNSS TX1 : GPIO15, Pin 10
It is not possible to power the pHAT through the USB connection.
5V Power (e.g. Pin 2) provides power to the 3.3V regulators on the pHAT.
3V3 Power (e.g. Pin 1) enables the main 3.3V regulator on the pHAT. On Raspberry Pi, this is used as a Sleep / Wake function. When POWER_OFF_ON_HALT is enabled and the Pi is asleep, 3V3 is turned off which in turn disables the regulator on the pHAT.
I hope this helps,
Paul