Portable vs Plug In
Compare battery-powered portable and plug-in smart speakers on placement flexibility, charging needs, battery runtime claims, and assistant readiness.
If you are interested in more details, you can find full information on the seller's page.
The M5Stack ATOM Echo is a programmable smart speaker development kit with an ESP32 PICO D4 SoC, Wi-Fi and BLE connectivity, speaker, microphone, RGB LED, and IR transmitter. It can stream music or play designated streaming media; voice commands require dedicated firmware to be flashed. External devices connect through the GROVE port.
Product size: 24 x 24 x 17 mm; product weight: 5 g. Package size: 85 x 65 x 17 mm; gross weight: 10 g. Its pinout is G21, G25, 5V, GND, 3V3, G22, G19, G23, G33; predefined pins G19, G22, G23, and G33 must not be reused, or the Atom Echo may be damaged.
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M5Stack ATOM Echo
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M5Stack CardKB2 42 keys
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TSCINBUNY ESP32 PLUS OLED
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Amazon Echo Dot Bluetooth version 5.0
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| Brand | M5Stack | M5Stack | TSCINBUNY | TSCINBUNY | Amazon | |
| Model | ATOM Echo | CardKB2 | ESP32 S3 | ESP32 PLUS OLED | ESP32 WROVER Starter Kit | Echo Dot |
| Price | A$29.90 | A$24.91 | A$134.31 | A$97.87 | A$58.14 | A$14.69 |
| Seller | Banggood | Banggood | Banggood | Banggood | Banggood | Alibaba |
| Update | Nov 13, 2026 | Nov 13, 2026 | Nov 13, 2026 | Nov 13, 2026 | Nov 13, 2026 | Nov 13, 2026 |
| Model Name | ATOM Echo | CardKB2 | ESP32 PLUS OLED | ESP32 WROVER Starter Kit | Echo Dot | |
| Product Type | Programmable smart speaker development kit | Keyboard unit | Educational programming kit | ESP32 WROVER electronic starter kit | speaker | |
| Wireless Connectivity | Wi-Fi; BLE | 2.4GHz WiFi, Bluetooth 5.0 Low Energy | Integrated Wi-Fi and Bluetooth capability | |||
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