Inspect coin input
Share photos of the coin acceptor, control board, and start wiring.
Coin laundry QR retrofit
QR payment retrofit for coin-operated laundry machines.
Use QuLink when old coin laundry machines should accept QR payment or app approval while still starting through pulse, relay, or compatible start wiring.
Coin retrofitTimed relayQR paymentSession status
Project fit
For washers and dryers being upgraded from coin payment
Buyer signals
- Coin-op laundry machines need QR scan-to-start.
- The machine can start through pulse, relay, or dry contact.
- Operators need session status, fault, or online/offline reporting.
- You want sample validation before replacing more machines.
What to send first
- Machine photo or existing board photo
- Interface or wiring note if available
- Target action after API command or payment
- Whether telemetry or data upload is required
Not the right fit if
- You only need a pure payment acquiring account and no machine-side control.
- There is no physical machine action after payment, booking, or API approval.
- The project has no machine photo, board photo, wiring note, or interface clue yet.
Integration model
Payment approval becomes a timed start signal
QuLink turns QR payment or app approval into the physical start behavior the laundry machine expects, then reports session state back.
- Machine interface
- coin pulse, relay, dry contact, sensor input, optional serial
- Trigger source
- QR payment, wallet callback, laundry app, operator command
- Session data
- started, completed, duration, fault, online/offline
- Project mode
- coin box retrofit, laundry room pilot, operator rollout
Workflow
From machine interface to API-controlled result.
Define cycle rule
Map payment amount to cycle, pulse count, or relay duration.
Trigger machine
The controller sends the configured pulse or relay output.
Upload session
Your backend receives start, completion, and fault status.
API example
A clear server command or webhook for the machine-side action.
The exact command fields depend on machine interface, firmware profile, and whether payment or your own app triggers the action.
POST /v1/devices/WASHER-18/commands
{
"command": "start_session",
"source": "qr_payment",
"machine_action": {
"type": "pulse_or_relay",
"duration_ms": 2100000
}
}
Start the project
Send the first machine details before writing a full spec.
Send washer/dryer photos, coin module wiring, target cycle length, payment flow, and quantity.
Useful first message
- Machine type and target country
- Machine photo, board photo, or wiring photo
- Action after API command or payment
- Data upload and estimated quantity
FAQ
Questions buyers usually ask before a sample test.
Can QuLink replace the coin acceptor?
In many cases QuLink can trigger the same start path, but wiring must be checked first.
Can one payment start one cycle?
Yes, payment can map to one pulse, multiple pulses, a relay duration, or another project rule.
Can the laundry app stay ours?
Yes. Your app can keep customer flow and call QuLink after approval.
Related use cases