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Green rectangular circuit board with blue potentiometer and pin headers

Milwaukee I2C LCD Adapter Extended Board 1602 2004 engineering development tool

SKU CH-CNV0-3PH3N

I2C adapter controls 1602 or 2004 LCDs using only two data lines and operates from 2.5 to 6 V

  • Size/Dimensions1.6002 cm x 6.2992 cm x 7.0104 cm
  • ApplicationPC Peripherals
  • FeaturesBlu-ray
  • Controls 1602 and 2004 LCDs with just two I2C pins
  • Operates from 2.5 V to 6 V supply range
  • Jumper cap enables or disables backlight power instantly
  • Blue potentiometer adjusts contrast clockwise for increase
  • Up to eight modules share one bus via A0–A2 address jumpers

I2C LCD Adapter for 1602 2004 Displays

This Milwaukee adapter board converts a parallel 1602 or 2004 character LCD to a two-wire I2C interface. It reduces the pin count required from a microcontroller to just SDA and SCL. The module operates from 2.5 V to 6 V and includes a jumper cap for backlight power control. Up to eight boards can share one bus by setting addresses A0, A1, A2.

Makers using Arduino Raspberry Pi ESP32 or STM

Developers prototyping with Arduino, Raspberry Pi, ESP32 or STM boards who need a compact text display will find this adapter convenient. It suits projects where GPIO pins are scarce and a simple serial link is preferred. Builders who require graphical output, colour screens or high-speed video should look at dedicated display modules instead.

Default I2C address 0x27 with A0 A1 A2 jumpers

The board ships with a default address of 0x27. Shorting the A0, A1, A2 pads changes the address so multiple units can coexist on the same bus. Verify that your host firmware expects this address or can be configured to match the jumper setting you choose.

Highlights

  • Controls 1602 and 2004 LCDs with just two I2C pins
  • Operates from 2.5 V to 6 V supply range
  • Jumper cap enables or disables backlight power instantly
  • Blue potentiometer adjusts contrast clockwise for increase
  • Up to eight modules share one bus via A0–A2 address jumpers

Specifications

BrandMilwaukee
Size/Dimensions1.6002 cm x 6.2992 cm x 7.0104 cm
ApplicationPC Peripherals
FeaturesBlu-ray

Questions about this item

What voltage range does the I2C interface on this 1602 2004 adapter support?

The module operates from 2.5 V to 6 V, covering common 5 V and lower-voltage logic systems.

What physical clearance is needed to mount the Milwaukee adapter board?

The board measures 1.6002 cm by 6.2992 cm by 7.0104 cm, so allow at least that footprint plus header height.

How do I set a unique I2C address when using more than one of these boards?

Short the A0, A1 and A2 pads in any combination; each pattern changes the default 0x27 address so up to eight modules can share the bus.

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