Question

Hello,

Could you please provide pinouts for internal interface pads? Is there possibility to connect RX and TX signals (communication with arduino) from external PCB to this internal pads? Thank you :-)

Answer 1

Hello,

Our internal pads are marked, and this information can be seen in photo that you attached too, however there is no TX RX pins in TRB142 7x2 header.

Pinout would be as follows:

SPI_CS_N	ADC
SPI_MOSI	GPIO_12
SPI_MISO	GPIO_14
SPI_CLK	GPIO_15
I2C_SCL	GPIO_38
I2C_SDA	GPIO_26
3V8	GND

There is UART connection on the other side of PCB though, where pinout would be:

RX	TX
-	HW_RST
-	GND
-	-
-	-
-	3V3
1V8	3V8

Marking is also on PCB itself.

Best regards,
Vidas.