ESP32-ADB-Edge

Name: ESP32-ADB-Edge
SKU: 10318
Price: 32.00 USD
Availability: Discontinued
Rating: 4.00 (2 reviews)

(2 Reviews)

Board with ESP32 on which we can enjoy "Alexa". ICS-43434 MEMS MIC and MAX98357A DAC, in addition to Lipo charger and OLED display!

Designed by microwavemont in Japan

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

Board with ESP32 on which we can enjoy "Alexa". ICS-43434 MEMS MIC and MAX98357A DAC, in addition to Lipo charger and OLED display!

This item is transferred to the new item. Please take a look at Simple Alexa Precaution before ordering: This board is not your "my first ESP32 board". Developing environment arrangement and some exp…

What is it?

A special ESP32 developing board suitable for Alexa experiment and development. All of we need for enjoying Alexa is already on-board, including Invensense/TDK ICS-43434 and Maxim MAX98357A 1ch-DAC, Lipo charger and SSD1106 display.

Why did you make it?

Alexa, which is incredible voice controlled interactive system developed by Amazon. A genius german programmer MrBuddyCasino already succeeded to implement it on ESP32 as a standalone system. By using this great code, we can make "DIY Amazon Echo" system but we will need to assemble components by components. Just I want to make it in single board form for simplicity and works well!

What makes it special?

All we need to enjoy Alexa by ESP32 is prepared on-board, including Invensense/TDK ICS-43434 MEMS microphone and Maxim MAX98357A DAC
MrBuddyCasino's code compatible. (No need to change code. It works on this board without modification.) GPIO_0 switch for microphone activation is prepared besides OLED display.
Lipo charging circuit on-board, which enables standalone operation. We can choose USB bus power mode and Lipo battery operation mode by on-board jumper.
In addition to Alexa experiment, still we can enjoy Bluetooth speaker/webradio just by programming.
For Alexa setting, WiFi SSID/password are hard-coded (should be noted in "make menuconfig"). As a initial firmware, bluetooth speaker mode firmware is uploaded to the board for operation check. For the Alexa experiment, esp-idf environment is indispensable. This board is not suitable for your "my first ESP32 board".
Before shipping all of boards are confirmed to response "what time?" and "who are you" by Alexa. But as written above, we need to upload binary based on your own SSID/password. Please note that this board is NOT quick beginner of ESP32.

Review Breakdown

Average Ratings

Product: (4.00)

Documentation: (3.50)

Shipping: (4.50)

Communication: (4.00)

Siow Lim | Jan. 16, 2018

Average performance 5 out of 10

The PCB-layout is well-designed and the components are good quality. I managed to get the system up and running. It connects to my iPhone flawlessly. However, the Bluetooth connection could not survive more than 3 meters line-of-sight. The connection will lose when being blocked by your body or even with a hand. Yes, it is mini-USB interface, not micro-USB. The audio reproduction is great. At least it sounds good to my ears. The OLED display works well. However, I am still not sure what the developer is trying to describe, Hence, I am trialling if he meant this or that. Overall, it serves the purpose and I will not lose any sleep on those negative stuff. If I need more, I will buy from him again.

Franz | Nov. 16, 2017