Wireless voice — inside and outside the bus

Announce inside. Canvass outside.

The Next Stop Announcer is a family of small wireless speakers. In the cabin, it plays a chime and the stop announcement as each stop approaches. Above the doors, external horn speakers canvass waiting passengers — calling out the route and destination at every stop, louder and fresher than any tired throat. All audio is your language, your voice, your script, synced over the air from the on-bus Next Stop Master; the speakers need only power.

2 zones
cabin voice + door-top horns
cue
after departure & on approach
Any language
it plays your MP3s
0 wiring
beyond a power point
🔔 ADUTHA STOP: MANNUTHY
അടുത്ത സ്റ്റോപ്പ്: മണ്ണുത്തി
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📣 AT THE STOP, FROM THE DOOR HORNS:"THRISSUR — THRISSUR — THRISSUR · VAZHIYORAM FAST"PATENT PENDING
wifi_tethering Synced & cued by the Next Stop Master
Two voices, one system

One announcer family — inside and outside

Cabin units and door-top horn units are the same wireless speaker in different enclosures, cued by the same master at the right moments.

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Inside: the announcer

Cabin speakers play the chime and next-stop announcement as each stop approaches — so every seated and standing passenger knows exactly where to get down.

PATENT PENDING campaign

Outside: the canvasser

Weatherproof horn speakers above the doors call out the route and destination to passengers waiting at the stop — tireless canvassing that fills seats, every single stop, without straining anyone's voice.

Advertisement revenue

Announcements that earn their keep

Like the Next Stop Display, the announcer carries sponsor audio — short spots sold to businesses along the route, played at the moments passengers are already listening.

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Inside: sponsored stops

"Adutha stop: Mannuthy — ee stop sponsor cheythathu…" A short sponsor tag after the stop announcement reaches a captive audience about to get down right at the advertiser's doorstep.

paid

Outside: sponsored calls

The canvassing horns already address the crowd at the stop — a sponsor line woven into the destination call turns every halt into a paid audio spot, heard beyond the bus.

How it works

Record once in the office — hear it on every bus

Announcement clips live in the BusParrot cloud. Everything after upload is automatic.

STEP 1
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Upload the clips

One MP3 per stop, your chime, and the canvassing call for the route — recorded by your announcer, a voice artist, or AI text-to-speech. Uploaded once to the BusParrot cloud.

STEP 2
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The master fetches

Each bus's Next Stop Master downloads exactly the clips for its own route over 4G and stores them locally — updates flow out the same way.

STEP 3
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Speakers sync over the air

Every announcer on the bus receives its clip library wirelessly over ESP-NOW and keeps it on local flash — no SIM, no Wi-Fi network, no SD cards to swap.

STEP 4
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Announced on cue

GPS decides the moment: inside, the chime and stop announcement after departure and again on approach; outside, the destination call from the door horns while the bus is at the stop.

The on-board family

Three devices. One system.

Slaves pair to the master on first power-up and need nothing else — fit as many per bus as you like.

Why riders & operators love it

Accessibility that pays attention

A scrolling display helps those who look up. A voice reaches everyone — standing passengers, elderly riders, children, and travellers new to the route.

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Your voice, your language

Malayalam, Tamil, Hindi, English — or all of them in one clip. If you can record it as an MP3, the announcer can play it.

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Inclusive by default

Visually-impaired passengers hear every stop called out clearly — matching the direction accessible-transport guidelines are moving worldwide.

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Heard in every zone

Long bus? Noisy engine bay? Fit two, three or four announcers — front, middle, rear. They all play the same cue at the same moment.

campaign

Canvassing that fills seats

The door-top horns call the destination at every stop with the same energy as the first trip of the day — no hoarse throats, no missed stops, more boarding passengers.

paid

Ad revenue built in

Sponsor audio spots ride along with the announcements, inside and outside — a second income stream on the same hardware, managed from the same cloud.

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No SD card shuffling

Route changed? Renamed a stop? Update the clip in the office — every speaker on every bus refreshes itself over the air on the next sync.

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Duplicate-proof playback

Cues carry sequence numbers and clips are integrity-checked after every transfer, so passengers never hear stutters, repeats or half-downloaded audio.

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Office-set volume

Playback volume is part of the bus's cloud profile — set it per route from the office; the master pushes it with every announcement cue.

Under the hood

Small box, clear voice

Just a controller, an amplifier and a speaker — everything clever happens in firmware.

Controller
ESP32-S3 dual-core with on-board MP3 decoding
Audio
Class-D I2S amplifier — cabin speaker enclosure, or weatherproof horn enclosure for door-top canvassing
Speaker zones
Cabin (next-stop announcements) and external door-top horns (destination canvassing at stops) — mix freely on one bus
Clip storage
Local flash holds the full announcement library for the route — plays even with zero coverage
On-bus link
ESP-NOW 2.4 GHz from the Next Stop Master — no router, no SIM, no pairing codes
Pairing
Automatic on first power-up: finds its master, locks to it, remembers it across reboots. Hold the button at power-up to re-pair.
Sync integrity
Every clip is checksummed after transfer; incomplete audio is never played
Units per bus
As many as the cabin needs — all cued in step by the same master
Power
Runs from the bus 12/24 V supply via regulated adapter

Give your buses a voice.

Tell us your routes and languages — we'll prepare the announcer kit and the clip workflow for you.

💬 WhatsApp us 📞 +91 90745 07122