Can I add other I2C devices with BerryGPS-IMU v3

[jimb]

Hello, I have a few BerryGPS-IMU V3s for various projects and on one set up, I would like to add a small I2C OLED display but, the BerryGPS-IMU covers the GPIO pins so, I cannot access to add this other device. I see on the BerryGPS-IMU that there are 2 pins labeled uSCL and uSDA; are these for adding external I2C devices? If not, is there a way to do this without soldering to the BerryGPS-IMU header?

I tried using /dev/i2c-0 but, apparently, this is not straightforward (I had not accounted for adding extra pullup resistors etc) so, I am hoping that there is a simple way to add other I2C devices.

Thank you! -Jim

[jimb]

OK, nevermind… I noticed on a photo in another post that there are SCL and SDA pins on the board! My set up is powering the Pi Zero W through the 5v and gnd pins and my connector was covering the SDA and SCL pins. D’oh! Sorry for the pointless post.

[Mark Williams]

correct, you worked it out.
BTW: uSCL & uSDA connect directly to the GPS module only.

Mark --OzzMaker.com --

[jimb]

Thanks for the follow up… here are a couple of photos of the work in progress…

Should I consider jumping from the v3 to the v4? What are the main advantages? I am using a Pi Zero W and, it sounds like the v4 has been optimized for the Zero…

[Mark Williams]

Nice!
The GPs, pressure sensor and formfactor are the same for V3 and V4.
Here are the major changes;
+The IMU is different.V4 has a better quality IMU, but most people will not notice.
The big difference is faster output rate (6,664 times a second) for the gyro and accelerometer.
+V4 also has QWIIC connectors
+You can now communicate with the GPS module via i2c, you need to solder some jumpers to do so. this method doesn’t work with GPSD and is for advance users
+v4 includes a led for power
+v4 also include level shifters, which means you can connect it directly to a 5v device (e.g. Arduino)

Mark --OzzMaker.com --

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