Identify the MDB path
Confirm whether the target machine is standard MDB, a cabinet controller, a coffee controller, or mixed vending wiring.
MDB vending integration
MDB vending machine API gateway for server-controlled machines.
Use QuLink between your vending machine and your cloud when the machine uses MDB, needs remote vend control, payment callback triggers, telemetry upload, or a retrofit path that does not replace the whole machine.
MDB protocol handlingVend command + resultTelemetry uploadOptional QR payment
Project fit
When this page matches your project
Buyer signals
- You operate or build vending, coffee, smart retail, or cabinet machines.
- Your software needs to trigger vend, query status, or receive vend result events.
- You want QR payment, wallet callback, or app approval to start a vend action.
- You need MDB protocol handling without rebuilding timing and machine events from scratch.
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
Integration model
How QuLink connects it
The QuLink board sits on the machine side, handles MDB communication, and exposes command/event flows to your server.
- Machine interface
- MDB, vending controller wiring, optional relay or serial auxiliaries
- Server side
- API command, webhook event, telemetry callback, payment confirmation reference
- Typical actions
- dispense, start_session, query_status, vend.result, machine.fault
- Project mode
- retrofit sample, vending operator rollout, OEM controller customization
Workflow
From machine interface to API-controlled result.
Map vend actions
Define slot/product, vend authorization, payment reference, timeout, and result reporting.
Connect server events
Your backend receives online status, vend result, fault alert, and telemetry updates.
Test with a real machine
Run sample commands on the actual vending hardware before moving to batch deployment.
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/VM-1049/commands
{
"command": "dispense",
"source": "payment_confirmed",
"machine_action": {
"interface": "mdb",
"slot": "A07"
},
"reference_id": "PAY-2026-1049"
}
Start the project
Send the first machine details before writing a full spec.
Send the vending machine model, MDB photos, board photos, payment workflow, and the vend action you need.
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 work with an existing payment app?
Yes. Your payment app or server can confirm payment first, then call QuLink to trigger the MDB vend action.
Do we need to replace the whole vending controller?
Not always. Many projects start as a retrofit gateway. OEM controller replacement can be evaluated when the project needs repeat deployment.
Can the board upload vending data?
Yes. QuLink can report device online status, vend results, fault events, usage logs, and telemetry to your server.
Related use cases