Pimoroni PA1010D GPS Breakout not visible as I2C device

Support
1

Hi,

Problem:
pi@raspberrypi4:
~ $ i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – – – – – – – – – – – – –
10: – – – – – – – – – – – – – – – –
20: – – – – – – – – – – – – – – – –
30: – – – – – – – – – – – – – – – –
40: – – – – – – – – – – – – – – – –
50: – – – – – – – – – – – – – – – –
60: – – – – – – – – – – – – – – – –
70: – – – – – – – –

the device is not visible as a I2C device, no activity LED is visible.

If I try other I2C devices, they are functionning.

What am I doing wrong??? it is not soldered, but should function though…
Thanks!

2

It’s hard to tell from the perspective, but do you have the black wire in the lane marked with a circle with a line through it? If so, the Ground wire needs connected to the GND pin.

it is not soldered, but should function though…

I’d not want to guarantee that, it might sometimes but it wn’t other times.

3

The connections are:

  • blue SDA1 → SDA
  • white SCL1 → SCL
  • red 5V → 3-5V
  • black GND → GND
4

The only other suggestions I’d have are:

  • Make sure you’ve got i2c enabled in sudo raspi-config, though if you’re getting i2cdetect output I’d be surprised it that’s the problem.
  • Try sudo i2c detect -y 1
  • Make sure the breadboard breakout you’re using is the right way around, these are notorious for being connected to the Pi in different orientations.
  • Try applying some pressure to the GPS breakout to make sure it is fully pressed against the pin header.
  • Put the pin header under the breakout to make sure it is getting a good connection to the breadboard rails.
5

I’d tilt the breakout with your hand while running i2cdetect. Really needs to be soldered by the way, or your just going to have a reoccurring issue.
The black wire looks like its plugged into the wrong pin to me? It looks like its it plugged into the do not enter / not used pin.

6

The hint with tilting helped, it could indeed detect the device. Since then also soldered, and works fine.

Any hints for reaching with the above configuration the 10Hz refresh rate?