Bridgetek EVE Series - Touch Enabled Graphical User Interfaces

26 Jan 2024

Bridgetek’s products include the EVE family of display controllers which make it easy to add attractive and fully featured touch-enabled graphical user interfaces to existing and new product designs.

To improve the user experience and functionality, EVE devices can be used to upgrade the user interface of a wide range of devices including industrial machines (industrial controllers, machine tools, elevators) and household appliances, and in consumer electronics devices and many more applications.

The flexibility of EVE series is that it can be driven by any low-cost MCU over SPI. This allows existing equipment / products to be easily upgraded by adding colour graphics and touch with minimal impact to the existing design.

Another advantage of the EVE series is the EVE Toolchain programming tools, which significantly facilitate and speed up the process of designing with displays, especially in the field of extensive graphical user interfaces.

Our family of MCUs are optimized for high-speed interface bridging tasks to a wide range of protocols including USB Host, USB Device, SD Host, Ethernet, SPI, I2C, DAC, ADC, PWM, CAN and Camera Interface, these are available on the Bridgetek.

We have a downloadable Free Toolchain with a wide range of examples and easy prototyping by using development modules.

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balajivan1995 over 1 year ago

Do you offer any round display with touch screen ?
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shabaz over 1 year ago in reply to balajivan1995

BuyDisplay (nice name - straight to the point!) have round displays. I've not purchased round displays from BuyDisplay, but have purchased rectangular LCD screens (with and without touch) from them in the past. They seem reliable, and some of their displays are available for a long term.

There's lots of source code around for many of the controllers they use (e.g. RA8875 chip is easy to drive), so there's tons of community support around (and nowadays sometimes community support is better than what firms offer themselves).
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balajivan1995 over 1 year ago in reply to shabaz

For our product, we are testing ESP32C3 LCD kit. I am looking for something similar like that actually. Preferably with touch controller, the one I have mentioned doesn't come with touch interface.
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shabaz over 1 year ago in reply to balajivan1995

What sizes are you considering?

This one is 1.28 inch with capacitive touch, and it seems very low cost. There's a larger 2.1 inch display with capacitive touch too, the price seems reasonable considering it's high resolution. Both of these have in-built well-known controller chips that would easily interface with ESP32 (or any microcontroller with SPI).

Just to throw some ideas out in case they are interesting: another option (if the screen is too small for decent user experience with touch), if the design has space around the display, or below the display, then touch sensors would work well. Then the user has lots of space for pressing (without the hassle of needing a panel with button holes cut out), and the edges of the circular display can indicate what those buttons will do (if the buttons need to support soft-features).
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balajivan1995 over 1 year ago in reply to shabaz

Thank you very much! The 1.28" display looks nice and crisp. We prefer capacitive touch displays, preferably driven by ESP32. I think I'll give it a try. Alternative option is buying the STM32 dk board with touch display that was in roadtest few months ago. ESP32 makes it easier to update the entire UI design remotely using Wifi.
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shabaz over 1 year ago in reply to balajivan1995

Great!

That display controller by the way is the same one that is used in the Hackaday VectorScope project Building a Hackaday “Vectorscope” Badge: DIY Guy Fawkes Edition (which I still need to complete; I'm quite keen to develop a simple circular GUI, and a few circular charting methods). They used a version without touch-screen however. You could check their GitHub site for the source code to drive the display (they used a Pi Pico, but the code should be transferrable. In any case, I'm sure there are plenty of ESP32 examples for that controller too.
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balajivan1995 over 1 year ago in reply to shabaz

We have placed an order for m5dial. Which is also based on GCxxxx but with a touch controller as well.

I'll ask my manager to approve the purchase of buydisplay version.We already have a similar 8051 based development board that we acquired from a Chinese vendor. Hopefully customs won't be a pain in the butt.
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balajivan1995 over 1 year ago in reply to shabaz

We have placed an order for m5dial. Which is also based on GCxxxx but with a touch controller as well.

I'll ask my manager to approve the purchase of buydisplay version.We already have a similar 8051 based development board that we acquired from a Chinese vendor. Hopefully customs won't be a pain in the butt.
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