ZX Distance and Gesture Sensor SMD Hookup Guide
Shawn Hymel, 
LightningHawk 
Board Overview
The ZX Sensor works by bouncing infrared (IR) beams of light from the two LEDs on either side off of an object above the sensor. The bounced light returns to the receiver in the center of the sensor, and a microcontroller on the back of the sensor interprets the data. We can read the results using an I2C or UART connection.
Pin Descriptions
The ZX Sensor gives us two ports to connect to: I2C and UART. You can see both ports are broken out to the 0.1" thru holes. See the table below for a list of each pin and its function.
| Pin Label | Description |
|---|---|
| GRN | Not used |
| TXO | UART transmit out from the ZX Sensor |
| RXI | UART receive. Not used at this time. |
| VCC | 3.3 - 5 V power supply |
| GND | Connect to ground |
| BLK | Not used, but connected to GND |
| DR | Data Ready. High when there is data to be read via I2C |
| CL | I2C clock |
| DA | I2C data |
Setting the Jumpers
The ZX Sensor has a couple of jumpers on the back of the board that can be opened or closed with a soldering iron.
I2C Pullups
The ZX Sensor, by default, comes with 4.7 kΩ pull-up resistors on the SDA and SCL I2C lines. Remove the solder on this jumper using solder wick to disconnect the pull-ups.
I2C Addr
By default, this jumper is open. Close it to change the I2C address of the sensor.
| Jumper | I2C Address |
|---|---|
| Open | 0x10 |
| Closed | 0x11 |