Machine operators
Retrofit existing machines with QR payment, remote start, telemetry, and fault reporting without rebuilding the full cabinet.
Who this helpsCapa de hardware de control para máquinas desatendidas
QuLink convierte máquinas MDB, pulse, relay y serial en dispositivos conectados por API. Envía comandos, recopila datos de máquina y usa pago QR QuLink cuando se necesita scan-to-start.
Send the machine photo, current board photo, or coin/payment module photo. We will identify the interface and suggest a sample test path.
POST /v1/devices/VM-1049/commands
{
"command": "trigger_relay",
"source": "api_or_qr",
"duration_ms": 800
}
Popular machine use cases
Choose the closest use case first. Each guide explains the machine interface, trigger workflow, data upload path, and what to send for a sample test.
Vending QR payment
Scan-to-pay vending with API vend trigger and result upload.
Open guide
Laundry QR payment
Timed relay or pulse start for washers and dryers.
Open guide
Smart locker unlock
API or QR-triggered relay unlock with door status upload.
Open guide
RS485 data upload
Telemetry, fault, meter, and serial data callbacks.
Open guide
MDB cashless retrofit
Add QR or wallet callback to existing MDB vending machines.
Open guide
Massage chair payment
QR scan-to-start timed sessions for massage chairs.
Open guide
EV charging socket
Timed power sessions, relay control, and usage data.
Open guide
Kiddie ride pulse
Coin pulse replacement for rides and amusement devices.
Open guideHardware de control de dispositivos
Who this helps
QuLink is most useful when software, payment, or operations teams need a physical machine to react reliably after an API command or payment confirmation.
Retrofit existing machines with QR payment, remote start, telemetry, and fault reporting without rebuilding the full cabinet.
Who this helpsKeep the checkout and user flow in your platform; use QuLink for the machine-side trigger and result callback.
Who this helpsUse API commands, webhooks, and board-level interface mapping instead of rebuilding MDB, pulse, relay, or serial behavior.
Who this helpsMove from sample validation to firmware, connector, enclosure, and board customization for repeat deployment.
Who this helpsBoard selection
Most customers do not know the exact board model at first. Send the machine type, interface, wiring photo, or target action; QuLink will map it to a control board and API workflow.
Board examples
These board examples cover the machine-side jobs customers usually ask about: retail control, PLC vending, lift control, QR/API trigger, 4G data transmission, display/payment terminals, relay control, metering, charging, and lock control.

Vending and smart retail main control, multi-channel I/O, 4G connectivity, telemetry, and remote commands.

PLC vending control, relay outputs, motor/slot control, cabinet wiring, and API-driven operation.

Lift cabinet control, elevator motor coordination, drop detection, serial/MDB integration, and vend result reporting.

Retail cabinet controller with cellular module, SIM, multi-port wiring, machine status upload, and remote control.

Scan-to-start and API command board for payment callback, relay trigger, timed run, unlock, or dispense actions.

Compact cellular control box for remote equipment connection, data upload, OTA support, and field installation.

Small 4G controller for machine data transmission, remote command, and retrofit integration.

Cellular data module for connecting legacy machines to a server with telemetry and command callbacks.

Display or smart cabinet main board for touch screens, QR workflows, media UI, and peripheral connections.

Screen payment terminal board with SIM, USB, serial, audio, and API connectivity for scan-to-start machines.

Another display-controller form factor for payment screens, interactive panels, and connected smart devices.

Terminal-style hardware for face recognition, screen payment, wallet login, or identity-based machine start workflows.

Lock, gate, access, room, locker, and timed relay control with QR/API command trigger.

Water, laundry, charging, sensor input, metering, relay output, and equipment-state reporting.

Charging and payment controller kit for display, card/QR module, relay output, and usage session control.
Cobertura de hardware
Para categorías self-service comunes, QuLink cubre placa de control, conectividad, carga de datos y trigger de pago. AI vision, RFID parking o controladores muy especializados deben evaluarse como proyecto OEM.
Placas vending con o sin pantalla, equipos MDB, PLC vending, controladores lift, sensores de caída y smart cabinets.
Gateway MDB / controlador OEM
Pantallas de pago QR, payment boxes, terminales de tarjeta y controladores scan-to-start con callback de pago.
Placa trigger QR/API
Kiddie rides, amusement, sillas de masaje, lavandería, car wash, sockets de carga y dispositivos timed relay.
Controlador pulse / relay
Estado, alertas de falla, logs de uso, resultados vend, telemetría, eventos de resultado y callbacks cloud.
Machine Data Bridge
Water control, dispensadores líquidos, carga e-bike, medición de potencia, cobro por tiempo y full-stop charging.
Placa de control OEM
Reconocimiento facial, AI cabinet vision, RFID parking, BLE beacons y módulos de sensores avanzados.
Integración OEMFlujo de control
QuLink se ubica entre tu servidor y la interfaz de la máquina. Tu sistema envía un comando, la placa lo traduce a MDB, pulse, relay o serial, y reporta el resultado.
Selecciona la máquina por device ID, ruta, gabinete, slot, canal relay o sesión por tiempo.
Tu servidor envía un comando firmado como start_session, trigger_relay, unlock, dispense, stop o query_status.
La placa QuLink traduce el comando a MDB, pulse, relay, serial, unlock o acción por tiempo.
La placa devuelve estado online, resultado de comando, telemetría, alerta de falla, resultado vend o datos de sesión.
Pago QR QuLink
QuLink puede proveer el flujo de pago QR como capacidad adicional. Después de confirmar el pago, QuLink convierte el evento de pago en el mismo comando de control de máquina.
Crea un QR para máquina, producto, regla de precio, canal relay o sesión por tiempo.
Usa pago QR QuLink o conecta tu callback de wallet/provider si ya tienes stack de pago.
Tras la confirmación, QuLink inicia, desbloquea, dispensa, pulsa o corre la máquina y reporta el resultado.
How projects start
You do not need a perfect technical brief on day one. Share what the machine should do, send, or report; QuLink can help identify the interface and next test step.
Machine model, board photo, wiring photo, coin/payment module, or target action is enough to begin.
We check whether it is MDB, pulse, relay, serial, RS485, QR trigger, data upload, or a custom OEM case.
Connect a sample board, confirm command/API behavior, verify machine action and data callback.
Adjust firmware, connector, enclosure, QR payment, or OEM board design for repeat deployment.
Categorías de máquina
MDB vend, QR vend, telemetría, evento de inventario, resultado de dispensado.
Simulación de pulso, juego por tiempo, reemplazo de token, inicio de sesión.
Relay temporizado, inicio de ciclo, pago QR QuLink o callback de app, evento de estado.
Desbloqueo, renta, devolución, sesión de carga, online/offline, carga de datos.
Guías de casos de uso
Empiece con las guías destacadas abajo. Cada página (inglés) explica interfaz, trigger de pago, upload de datos e info para prueba de muestra.
A practical path for adding QR payment to vending machines using a machine-side controller, payment callback, vend trigger, and result upload.
Leer guíaConnect MDB vending machines to your backend with API vend commands, payment callbacks, telemetry, and MDB event upload.
Leer guíaConnect vending machines to QR payment, API commands, vend triggers, telemetry, and server callbacks without rebuilding the whole vending controller.
Leer guíaQR payment and API control board for laundry machines, timed relay start, pulse simulation, session status, and machine data upload.
Leer guíaTurn payment approval from your wallet, app, checkout, or backend into a physical machine action with QuLink control boards.
Leer guíaUpload self-service machine telemetry, faults, usage logs, vend results, meter values, and session events to your own cloud.
Leer guíaDeveloper API
Tu equipo de software no tiene que reconstruir timing MDB, ancho de pulso, duración de relay, frames seriales, upload de telemetría o manejo de resultado vend desde cero.
start_session, trigger_relay, dispense, unlock, stop, query_status
device.online, command.accepted, telemetry.updated, machine.fault, vend.result, session.completed
POST /v1/devices/{device_id}/commands
{
"command": "start_session",
"source": "api_command",
"machine_action": {
"type": "relay",
"duration_ms": 800
},
"reference_id": "CMD-2026-10492"
}
POST /webhooks/qulink
{
"event": "payment.confirmed",
"device_id": "VM-1049",
"action": "trigger_relay",
"telemetry": {
"online": true,
"last_result": "session_started"
}
}
FAQ técnica
Sí. QuLink puede proveer flujos de pago QR para máquinas scan-to-start. También puedes conectar tu propio proveedor de pago, wallet, app o callback de servidor.
Sí. Las placas QuLink pueden subir estado, telemetría, resultados vend, alertas de falla, sensores y logs de operación a tu servidor.
QuLink soporta MDB, pulse, relay, UART, serial, RS485, flujos de pago QR QuLink e interfaces OEM personalizadas.
Para integradores de sistemas, operadores de máquinas, apps de pago, proveedores de wallet y OEMs que quieren conectar hardware a su propio backend.
Proyecto RFQ
Envíanos una nota breve. Confirmaremos la interfaz de la máquina, el flujo API, carga de datos, pago QR QuLink o tu callback de pago, y la cantidad.
If you are unsure about the exact interface, send what you have. Photos often answer more than a long spec.