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ESP Sample Code for an EVE3 Display

Posted: Mon Oct 26, 2020 6:35 pm
by Henry
Simple weather station application for an ESP using the WEMOS D1 Mini and a Matrix Orbital EVE3 4.3" SPI Display.

The display used, EVE3-43G is an oversized Capacitive touch 4.3" IPS TFT for easy mounting and clean design. The EVE3 uses the BT815 and BT816 as the graphics engine and features 32Mb on-board memory.

Source Code
https://github.com/MatrixOrbital/ESP-EVE3-Weather-Demo

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Requirements

WEMOS D1 Mini (Most models of the ESP32/ESP8266 should work, but are untested)
A Matrix Orbital EVE3-43 display
A Matrix Orbital EVE2-SPI2BBC Breakout board
A Matrix Orbital EVE2-USB2SPI-KIT-A USB to SPI Adapter board

Re: ESP Sample Code for an EVE3 Display

Posted: Tue Oct 27, 2020 7:45 am
by Rudolph
Nice, I have a project with EVE3-43G modules currently and my cases look similar. :-)
I only wish DigiKey had EVE3-43G-IPS-BLH-TPC-Fxx but they "only" have EVE3-43G-BLM-TPC-F32.
Same goes for the other IPS versions, these are not even listed.

I do wonder about the current consumption though.
It obviously seems to work although the LDO on the WEMOS D1 Mini is a bit weak
for the ESP8266, WLAN and the EVE3-43G.

The IPS versions are a lot brighter, are these also even more efficient?
At REG_PWM_DUTY = 32 like in the project my EVE3-43G draws around 150mA.
What does the EVE3-43G-IPS need at REG_PWM_DUTY = 32 and REG_PWM_DUTY = 64?