AI_NFC_01 — AI Voice, NFC Audio & Bluetooth Speaker/App Board
A mass-produced board from a real, shipping AI companion product: talk to it, or tap an NFC card to trigger custom audio.
Buying in volume? Price is negotiable by quantity — message us.
Kit includes: mic, speaker, battery, NFC antenna, base SDK
Not a generic dev board — the design comes from a real, in-market product, so you also skip trial production and driver bring-up, not just PCB layout.
We'll confirm details and send a secure payment link before shipping — no cart, no checkout.
Demo video
AI voice conversation demo
NFC trigger demo
Specs
| Board size | 60 × 40 × 13mm |
| CPU | Dual-core 32-bit DSP, up to 320MHz, hardware single-precision float + math acceleration, I-cache/D-cache/MMU |
| Cache | 32KB 8-way I-cache + 32KB 8-way D-cache (carved out of on-chip SRAM) |
| On-chip SRAM | 578KB |
| RAM | 8MB SDRAM |
| Flash | 8MB |
| Storage expansion | microSD (TF card) slot supported |
| NFC | ID-based lookup — the tag stores a resource id, not the audio itself; the board reads the id, fetches the matching resource over the network, and plays it |
| AI voice | Conversational AI voice interaction |
| Voice wake / interrupt | VAD + AED — voice wake and barge-in (interrupt mid-reply) supported |
| Physical controls | Wi-Fi pairing button, play/pause, volume +, volume - |
| Wi-Fi | 2.4GHz, AP / STA / monitor mode, multi-AP STA with best-signal auto-connect, fast cold-start reconnect, power-save mode |
| Wi-Fi security | Open, WEP, WPA-PSK/WPA2-PSK (TKIP/AES/CCMP) |
| Wi-Fi TX power | DSSS 1M/s: 17dBm · MCS0: 16dBm · MCS7: 12dBm |
| Wi-Fi RX sensitivity | DSSS 1M/s: -95dBm · MCS0: -91dBm · MCS7: -72dBm |
| Bluetooth | BT v5.3 (BR+EDR+BLE), piconet + scatternet, class 2/3 TX power, GFSK + π/4 DQPSK all packet types — EDR supports Bluetooth speaker mode, BLE supports app connectivity |
| Bluetooth TX power | +15dBm |
| Bluetooth RX sensitivity | -93dBm |
| Audio amplifier | Recommended speaker: 4Ω, ≥3W rated, ≥89dB sensitivity — do not use a 2Ω speaker |
What's included
- Board (front + back shown in photos)
- Base driver SDK
- OTA update example
- Wi-Fi provisioning example
- NFC id-lookup sample: tag → resource id → network fetch → playback
- AI dialogue sample program
- Pre-flashed demo firmware
A mass-produced board from a real, shipping AI companion product — not a one-off prototype, so supply is consistent and restocking is straightforward. Two things are already wired and verified: conversational AI voice interaction, and NFC-triggered audio. The NFC side works by id lookup, not by storing audio on the card: each tag just holds a resource id, the board reads it, downloads the matching resource over Wi-Fi, and plays it — so the audio can be any length, and you can swap what a given card plays at any time without re-writing the tag. Resources can be your own preset content or fully user-uploaded, which is exactly how one of our existing customers runs it: a storybook machine where parents upload their own recorded audio, tied to the id on each physical book/card — tap a card, the matching story plays, with physical play/pause and volume buttons so kids don't need a screen. Bluetooth covers both directions too: EDR for Bluetooth-speaker mode, BLE for a companion app to connect to the board directly. SDK and sample firmware included so you can start modifying behavior instead of bringing up drivers from scratch.
Need more than the board?
This board ships with the basics only: driver SDK, OTA update example, Wi-Fi provisioning example, and an AI-dialogue sample program. If you need the full resource system behind it — a backend, app, or mini-program where your users upload their own audio and an NFC tap downloads and plays it — or a fully finished, custom-built device, that's custom development work, not something you buy off this page. Message us and we'll scope it.