GxEPD2
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GxEPD2 | nodemcu-devkit-v1.0 | |
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12 | 10 | |
888 | 1,342 | |
- | 0.4% | |
7.2 | 0.0 | |
14 days ago | over 6 years ago | |
C | Batchfile | |
GNU General Public License v3.0 only | MIT License |
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GxEPD2
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ESP32 + Waveshare e-Paper Display
And the HelloWorld examples from GxEDP (https://github.com/ZinggJM/GxEPD) as well as GxEDP2 (https://github.com/ZinggJM/GxEPD2)
- is there way to set a LILYGO® T5 4.7 Inch E-paper V2.3 ESP32-S3 to view pics from the sd
- Waveshare EPD library
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MH-ET ePaper module 2.9" help
From what i understand, by uncommenting display class and display driver class in the GxEPD2_display_selection_new_style.h file, the display class object is constructed in line 144 for esp32, as that file is included in the GxEPD2_Example.ino file.
- E-Ink Display & ESP8266 without SPI
- E-Paper strange behavior. Dimming after writing. Any experts?
- E paper display
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E-Ink Work From Home Calendar
I'd recommend checking out this library GxEPD2 to drive the display contents.
- ESP Beginner 1.54inch e-Paper pins on NodeMCU 32S
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help with customising e-paper display visuals
I have been able to run the GxEPD2 example code on my arduino uno which then shows the examples on the screen so I know the screen and connections are working.
nodemcu-devkit-v1.0
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Component unknown
This appears to be a NodeMCU, which is an open source dev board: you can just look up the schematics
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Update: Soldered a 1000uF THT Capacitor to the ESP01
ESP8266 boards out there, such as the NodeMCU (see here, under ESP-12 Core), normally have a 100uF SMD Tantalum capacitor for this purpose.
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I'm having trouble powering a 5v relay using vin output on a nodemcu-esp12e
It should be fine. The Vin pin is indeed normally Voltage IN but on the nodemcu board as per the schematics it should work given that the 5V supply is powerful enough. I've done it myself multiple times. What type of relay module do you have? Have you connected the grounds together if using separate power supplies?
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E-Ink Work From Home Calendar
Board: NodeMcu 1.0 (I de-soldered the LEDs and serial chip to save power once programmed)
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esp8266 custom dev board
The NodeMCU v1.0 is based on the CP2102. Doesn't get much eachier than that.
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Board not booting with Vin 5v until reset button is pressed
Guess my only solution would be having to wire it to the USB input somehow. If I could somehow find the VU pin it would allow me to perhaps solder that pin directly to the Vin pin? Unfortunately this version did not populate VU on the board. From what I can see in schematics,(This is V1 so it may not be true) VU has a Schottky Barrier Plastic Rectifier Diode (Schematic) between it and Vdd (VIn) Perhaps tapping into that port could work? (This is V1 so it may not be true) VU has a Schottky Barrier Plastic Rectifier Diode (Diagram) between it and Vdd (VIn)
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Before I blow up my NodeMCU is this correct?
I don't see VIN max mentioned there but https://github.com/nodemcu/nodemcu-devkit-v1.0/blob/master/Documents/NCP1117ST33T3G.PDF says 10V if yours has the 1117. Either way 12V is pushing it, and as I mentioned lead is greater than 12V when charged, just like other chemistries like Lithiums say ~3.7V but charged are actually around 4.2V
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What exactly did I buy?
It has the same pinout as a NodeMCU except for that ADC pin where the NodeMCU has a reserved pin. The ADC pin might differ from the A0 pin by including a voltage divider to match a D1 mini, but I'm just speculating and I'd recommend not using it. It looks different because they put the parts of the ESP-12 module directly on the PCB, which is going to same some money on the build. You should be fine treating it like a NodeMCU.
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[Nodemcu devkit v 1.0] Does this non pop have anything to do with waking up from deep sleep?
Yes. If you look at the schematic and prints (that's 1.0, but not much has changed), that's R10. Connects GPIO16 (aka XPD_DCDC) to /RST (aka EXT_RSTB). From the ESP8266 datasheet:
What are some alternatives?
GxEPD - A simple E-Paper display library with common base class and separate IO class for Arduino.
Lilygo-T5-4.7-meteo-and-domoticz- - an E-paper domoticz console with Lilygo-T5
Arduino - ESP8266 core for Arduino
Tasmota - Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
wall-ink - ESP8266 based e-ink conference room scheduler display. Repurposable through PHP-based server plugins to display any image. Outlook, Exchange, Booked, Google Calendar API and iCal server scheduler support.
esp8266_deauther - Affordable WiFi hacking platform for testing and learning
wall-ink-server - Accompanying server software for the wall-ink project. Plugins for room scheduling through Outlook, Exchange, iCal, Booked, and Google Calendar API.
Sonoff-Tasmota - Alternative firmware for ESP8266 with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at [Moved to: https://github.com/arendst/Tasmota]
wasm3 - 🚀 A fast WebAssembly interpreter and the most universal WASM runtime
TFT_ILI9341 - A fast Arduino IDE compatible graphics and fonts library including a driver for the ILI9341 based TFT displays.
EPD - A library to control WaveShare e-Paper display.