Pinouts

This sensor is pretty simple! Instead of headers, we have a 4-pin JST PH connector. This makes it easy to plug in a cable that goes to another board or prototyping kit.

Looking at the image above, from top to bottom, the pinout is

  • GND - power and logic ground
  • VIN - 3-5V DC (use the same power voltage as you would for I2C logic)
  • I2C SDA - there's a 10K pullup to VIN
  • I2C SCL - there's a 10K pullup to VIN

We suggest these cables, they're even color coded!

JST PH 4-Pin to Female Socket Cable - I2C STEMMA Cable - 200mm

PRODUCT ID: 3950
This cable will let you turn a JST PH 4-pin cable port into 4 individual wires with high-quality 0.1" female sockets on the end. We're carrying these to match up with any of...
$1.50
IN STOCK

JST PH 4-Pin to Male Header Cable - I2C STEMMA Cable - 200mm

PRODUCT ID: 3955
This cable will let you turn a JST PH 4-pin cable port into 4 individual wires with high-quality 0.1" male header plugs on the end. We're carrying these to match up with any...
$1.50
IN STOCK

On the back there are 3 SWD programming dots (see the schematic for the exact pinout in case you want to re-program the chip)

There's also two I2C address jumpers. The default address is 0x36, but you can select between 0x36 and 0x39 inclusive by shorting AD0 (to add 1 to the address) and/or AD1 (to add 2 to the address)

This guide was first published on Nov 21, 2018. It was last updated on Nov 21, 2018. This page (Pinouts) was last updated on Sep 15, 2019.