DFRobot I2C / TWI 4x20 LCD Module
Description
- Cool LCD display with a high speed I2C serial bus
- Number of characters: 20 characters x 4 Lines
- Compatible with both Gadgeteer, Arduino DUE and Arduino UNO/Mega
- Blue LED backlight with white char color
The DFRobot I2C / TWI 4x20 LCD Module is compatible with Gadgeteer and features a cool LCD display with a high speed I2C serial bus. With the limited pin resources, your project may be out of resources using normal LCD shield. The LCD display is a 4x20 character STN white display with a blue LED backlight. With this I2C interface LCD module, you only need 2 lines (I2C) to display the information. Fantastic for Arduino based project. This board is able to be powered by 5V or 3.3V which make it compatible with both Gadgeteer, Arduino DUE 3.3V system and standard Arduino UNO/Mega 5V system.

- Size: 98 x 60 x 24mm
ZIP File
- I2C Address: 0x20-0x27 (0x20 default)
- Interface: IIC/TWI x1, IDC10 x2
- View direction: Wide viewing angle
- Dot size: 0.55 x 0.55mm
- Dot pitch: 0.60 x 0.60mm
- Character size: 2.96 x 4.75mm
- Character pitch: 3.55 x 5.35mm
Very easy to connect thanks to its I2C interface, it was operational less than 5 minutes after receipt of the package
Very good product delivered on time. Only question to which I did not find an answer in the datasheets .. What is the type of the output connector (4 pins) please ?? Thank you in advance ! -------------------------------------------------- -------------------------------------------------- ---------- Our technical team will contact you soon to answer your question.
I am just using this as an LCD display, so the cable it shipped with isn't used. To use it, just connect VCC/GND, and SDA and SDL to an Arduino. Download the library in the dfr0154.zip from the link above, and voila. You are up and running. Mine shipped with the i2c address set at 0x27. I've seen some LiquidCrystal_i2c libraries' examples defaulting to 0x20. If yours doesn't work, try 0x27 for the address. I did also try to run it at 3.3v and 5v, both work fine. Although at 3.3v, the pot at the back has to be adjusted all the way to the left, and even then the contrast is not great. At 5v it is beautiful.
Standard libraries and no issues, worked great and very easy to get setup.
I have purchased several of these displays with I2C, I find them easy to write to and only need two wires!
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorisation (RA) before initiating a return request.
United Kingdom consumers exercising their statutory Right of Cancellation are subject to different conditions. See the Statutory Right of Cancellation.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
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* United-Kingdom consumers retain their statutory Right of Cancellation on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Cancellation, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorisation (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
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Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".