I²C Backpack for 1602 and 2004 LCDs
PTSolns I²C backpack interface for 1602 and 2004 LCDs and is intended to be soldered right to the back of the LCD
PTSolns I²C backpack interfaces the common 1602 and 2004 LCDs to a microcontroller via the I²C protocol. It is called a backpack because it is intended to be soldered right onto the back of the LCD. Onboard the I²C backpack is a boost converter as well as a logic level shifter. This allows the user to connect an LCD to either a 3.3 V or a 5 V microcontroller.
The user can connect the I²C and power wires either directly to the onboard 4-pin screw terminal or via the onboard QWIIC® connector. This makes it convenient to easily daisy-chain other modules and sensors that also use the I²C protocol. The I²C backpack has LCD contrast and LCD backlight control via onboard potentiometers. The board has eight configurable addresses. To use the I²C backpack the user should install the PTSolns_I2CBackpack library. Various examples and documentation can be found in the library package.
- Onboard 3.3 V to 5 V boost converter and logic level shifter make the I²C backpack compatible with 3.3 V and 5 V supply and logic voltages
- QWIIC and 4-pin screw terminal connectors
- Eight configurable device addresses
- Onboard potentiometers for LCD contrast and brightness
- Large oscilloscope testing pads for I²C bus
- Compatible with 1602 and 2004 LCD
- Prototyping
- Displays
I²C Backpack for 1602 and 2004 LCDs
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | PTS-00166-211 | I2C BACKPACK FOR 16-PIN LCD KIT | 17 - Immediate | $8.56 | View Details |
Associated Parts
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | PTS-00135-201 | BREADBOARD GENERAL PURPOSE PTH | 609 - Immediate | $3.56 | View Details |
![]() | ![]() | PTS-00153-211 | PROTOTYPING SHIELD FOR ARDUINO K | 61 - Immediate | $6.96 | View Details |
![]() | ![]() | PTS-00154-211 | NRF24L01+ SHIELD FOR UNO KIT | 38 - Immediate | $8.09 | View Details |
![]() | ![]() | PTS-00157-201 | EXPANSION BOARD FOR RPI PICO | 0 | $12.56 | View Details |
![]() | ![]() | PTS-00158-201 | EXPANSION BOARD FOR RPI PICO. | 0 | $16.16 | View Details |
![]() | ![]() | PTS-00196-201 | NANO FLIP ATMEGA328P EVAL BRD | 242 - Immediate | $8.68 | View Details |
![]() | ![]() | PTS-00194-201 | UNO R3+ ATMEGA328P DEV. BOARD | 68 - Immediate | $14.28 | View Details |










