Wide ePaper plus ESP32 ADB

Name: Wide ePaper plus ESP32 ADB
SKU: 11213
Price: 37.00 USD
Availability: Discontinued
Rating: 4.50 (2 reviews)

(2 Reviews)

Now the wider ePaper with ESP32-ADB plus MEMS microphone. Smart speaker? Digital signage? Web radio? Even more!? Yeah we can make with this!

Designed by microwavemont in Japan

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On Dec. 15, 2025, my tindie store "micowavemont" trying restarting! Stay tuned!

Now the wider ePaper with ESP32-ADB plus MEMS microphone. Smart speaker? Digital signage? Web radio? Even more!? Yeah we can make with this!

Notice of parts change: CP2102N is changed to normal CP2102, due to availability. Binary uploading speed is limited to 920kbps. (not 2Mbps). What is it? An ESP32 basis developing board with wide ePap…

What is it?

An ESP32 basis developing board with wide ePaper, Audio DAC, I2S MEMS microphone, micro SD card slot and Lipo charger

Why did you make it?

ESP32 has wonderful potentials, not limited to the conventional application but also more. I myself want to make it and need a developing board like this, so I made one. This is the bigger screen version of this one. Basic wiring and handling are the same as the smaller screen version.

What makes it special?

GDEH029A1, 2.9-inch 296x128 pixels ePaper on board, connected by SPI bus with ESP32.
High-resolution audio DAC TI PCM5102A is connected through I2S.
MEMS microphone ICS43434 is connected through I2S.
Combination of Audio DAC and MEMS microphone is suitable for smart speaker (Amazon Alexa) experiment
micro SD card slot onboard, connected through SPI
Lipo charger is onboard, and also charger function is selectable by onboard jumper
Sample code is available at Github
Web radio sample is available at Github

Review Breakdown

Average Ratings

Product: (5.00)

Documentation: (4.00)

Shipping: (5.00)

Communication: (4.00)

Luis Carlos | Feb. 26, 2018

The best!

Thanks Microwavemont, you is bether!
Beaultifull origami Brazilian flag, lol!
But have more carefull with large lcd for chash in airmail!

Javier | Feb. 23, 2018

Awesome product

It works for me but after a little work
Alexa: after following the instructions installing https://github.com/MrBuddyCasino/ESP32_Alexa you need to change two things:
Audio_render.c -> comment line 102 and uncomment line 103 After that Alexa speaks at normal velocity in another case she speaks fast
Audio_recorder.c -> in line 33 change GPIO_NUM_17 to GPIO_NUM_19 After that you can use the microphone

The radio on the internet is the best thing I try.