blue iic i2c twi 1602 16x2 serial lcd module display factory

I de-soldered and removed the backpack from the LCD board and carefully cut the trace between the two pins of the jumper with a razor blade. That restored the function of the jumper and allows dimming of the backlight with a PWM pin from a microcontroller, etc.

If I can come up with some thin sharp tool that fits between the backpack and the LCD, I should be able to cut that annoying trace without having to desolder the backpack.

I bought this a few months back and only now started to use it. Works without issue. If you don"t get any characters on the display try to adjust the contrast using a screwdriver on the little blue thing on the back side (I did it while it was on, not sure if there"s some risk in that or not). If you want to print the degree symbol in python to the display then use "xdf". So, for degrees Celsius it"ll be "xdfC" (just add C really).

With only 4 pins to connect this display makes tings simple and gives a lot of room for other things. In my case an rf transmitter and additional two dht22s on one pi. Would recommend.

With IIC/I2C interface, it only takes two I/O port thus saving more for other usages. You can adjust the contrast by the potentiometer at its back. If you dont want the backlight, you can also unplug the jumper cap at the LCD back.

This Blue LCD display module has a high-speed I2C serial bus. With the limited pin resources, your project may be out of resources using normal LCD shields. The LCD display is a 2x16 character STN white display with a blue LED backlight. With the I2C interface LCD display, you only need 2 lines (I²C) to display the information. If you already have I²C devices in your project, this LCD module actually costs no more resources. Fantastic for an Arduino-based project.

{"id":1745214963770,"title":"1602 16X2 LCD IIC\/I2C\/TWI\/SPI Serial Interface Module Display Blue\/Yellow","handle":"blue-1602-16x2-lcd-iic-i2c-twi-spi-serial-interface-module-display","description":"\u003cstrong\u003eFeature:\u003c\/strong\u003e\u003cbr\u003eIt is another great BLUE backlight LCD display. \u003cbr\u003eAs the pin resources of Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. \u003cbr\u003eHowever, with this I2C interface LCD module, you will be able to realize data display via only 2 wires. \u003cbr\u003eIf you already has I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for Arduino based project.\u003cbr\u003eBacklight (White character on Blue background).\u003cbr\u003eCome with IIC interface, which can be connected by DuPont Line.\u003cbr\u003e\u003cbr\u003eSupply voltage: 5V.\u003cbr\u003eSize: 82x35x18 mm.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNote: Fixed address is 0x27 , it can"t be changed !!!\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePackage Included:\u003c\/strong\u003e\u003cbr\u003e1PCS* IIC\/I2C\/TWI\/SPI Serial Interface 1602 16X2 Character LCD Module","published_at":"2018-07-21T18:06:20+08:00","created_at":"2018-07-21T18:13:38+08:00","vendor":"diymore","type":"Interface Module","tags":["Arduino","Display","Shield"],"price":699,"price_min":699,"price_max":699,"available":true,"price_varies":false,"compare_at_price":390,"compare_at_price_min":390,"compare_at_price_max":390,"compare_at_price_varies":false,"variants":[{"id":16510444273722,"title":"Blue","option1":"Blue","option2":null,"option3":null,"sku":"030007LA","requires_shipping":true,"taxable":false,"featured_image":null,"available":true,"name":"1602 16X2 LCD IIC\/I2C\/TWI\/SPI Serial Interface Module Display Blue\/Yellow - Blue","public_title":"Blue","options":["Blue"],"price":699,"weight":36,"compare_at_price":390,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":16510630953018,"title":"Yellow","option1":"Yellow","option2":null,"option3":null,"sku":"030007HU","requires_shipping":true,"taxable":false,"featured_image":null,"available":true,"name":"1602 16X2 LCD IIC\/I2C\/TWI\/SPI Serial Interface Module Display Blue\/Yellow - Yellow","public_title":"Yellow","options":["Yellow"],"price":699,"weight":36,"compare_at_price":390,"inventory_management":null,"barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_18_101.jpg?v=1588645875","\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_7_256.jpg?v=1588645875","\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_1_593.jpg?v=1588645875","\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_3_295.jpg?v=1588645875","\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_4_457.jpg?v=1588645875","\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_12_892.jpg?v=1588645875","\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_5_669.jpg?v=1588645875","\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_10_683.jpg?v=1588645875","\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_17_881.jpg?v=1588645875"],"featured_image":"\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_18_101.jpg?v=1588645875","options":["Color"],"media":[{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678428614727,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_18_101.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_18_101.jpg?v=1588645875","width":1000},{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678429106247,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_7_256.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_7_256.jpg?v=1588645875","width":1000},{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678429139015,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_1_593.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_1_593.jpg?v=1588645875","width":1000},{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678429204551,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_3_295.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_3_295.jpg?v=1588645875","width":1000},{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678429237319,"position":5,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_4_457.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_4_457.jpg?v=1588645875","width":1000},{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678429696071,"position":6,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_12_892.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_12_892.jpg?v=1588645875","width":1000},{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678429925447,"position":7,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_5_669.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_5_669.jpg?v=1588645875","width":1000},{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678430056519,"position":8,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_10_683.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_10_683.jpg?v=1588645875","width":1000},{"alt":"1602 16X2 Lcd Iic\/i2C\/twi\/spi Serial Interface Module Display Blue\/yellow","id":6678430089287,"position":9,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_17_881.jpg?v=1588645875"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0122\/7558\/0986\/products\/030007LA_17_881.jpg?v=1588645875","width":1000}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cstrong\u003eFeature:\u003c\/strong\u003e\u003cbr\u003eIt is another great BLUE backlight LCD display. \u003cbr\u003eAs the pin resources of Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. \u003cbr\u003eHowever, with this I2C interface LCD module, you will be able to realize data display via only 2 wires. \u003cbr\u003eIf you already has I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for Arduino based project.\u003cbr\u003eBacklight (White character on Blue background).\u003cbr\u003eCome with IIC interface, which can be connected by DuPont Line.\u003cbr\u003e\u003cbr\u003eSupply voltage: 5V.\u003cbr\u003eSize: 82x35x18 mm.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNote: Fixed address is 0x27 , it can"t be changed !!!\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePackage Included:\u003c\/strong\u003e\u003cbr\u003e1PCS* IIC\/I2C\/TWI\/SPI Serial Interface 1602 16X2 Character LCD Module"}

This is another great I2C 16x2 LCD display compatible with Gadgeteer modules from DFRobot. With limited pin resources, your project will quicly run out of resources using normal LCDs. With this I2C interface LCD module, you only need 2 lines (I2C)to display the information.If you already have I2C devices in your project, this LCD module actually cost no more resources at all. The adress can be set from 0x20-0x27. Fantastic for Arduino or gadgeteer based projects.

It is another great BLUE backlight LCD display. As the pin resources of the Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. However, with this I2C interface LCD module, you will be able to realize data display via only 2 wires. If you already have I2C devices in your project, this LCD module won’t cost any more resources at all. It is fantastic for Arduino based projects.

The CFA533-***-KC series is a 16x2 I2C LCD with keypad. The I2C interface allows you to use just two lines (SDA & SCL) to have bi-directional communication with the I2C LCD. Other devices can also share those two I2C control lines with the LCD. Only 4 wires are needed to connect this I2C LCD: power, ground, SDA (I2C Serial DAta) and SCL (I2C Serial CLock).

The CFA533 can run on 3.3v to 5.0v directly, with no changes needed, so you do not need to do any level translation between your embedded processor and the I2C LCD. Simply power the CFA533 from the same supply as your processor and the I2C signal levels will match up.

Using only one address on your I2C bus, you can add all the elements that you need for your front panel. The CFA533 I2C LCD can also read up to 32 DS18B20 digital temperature sensors, giving you an easy way to integrate temperature sensing over the I2C bus. No additional firmware or pins are needed on the host system.

This CFA533-TFH variant features crisp dark letters against a white, backlit background. The keypad has a matching white LED backlight. Since the LCD is a backlit positive FSTN, the CFA533-TFH I2C LCD is readable in direct sunlight, as well as complete darkness.