AnyPCBA PCB and PCBA case studies
The rapid growth of the shared economy and unattended retail has created demand for a compact, reliable payment and control module that can be easily integrated into various self-service devices. This project required a small-form-factor QR payment module capable of remote control, timer-based operation, and flexible output options.
Key Hardware Requirements:
Compact Size: Coin-sized module for integration into space-constrained devices
Reliable Connectivity: GPRS/GSM communication for remote payment verification
Flexible Control Outputs: Timer, pulse, and UART output modes for different device types
Low Power Consumption: Suitable for battery or low-power applications
Easy Integration: Simple interface with existing device control boards
We designed a compact QR payment control module PCBA, integrating GPRS connectivity, payment verification, and multiple control output modes into a coin-sized form factor. The module serves as the "payment gateway" for shared economy and self-service devices.
Key design features:
Communication & Connectivity
GPRS/GSM module for remote payment verification and cloud communication
Integrated SIM card slot for cellular connectivity
Compact antenna design for reliable signal reception
Control Output Modes
Timer mode: Controls device operation duration by switching power on/off
Pulse mode: Outputs square wave pulses for the host controller to count and interpret
UART mode: Serial communication with host controller for advanced custom logic
Power & Integration
Coin-sized PCB design for space-constrained applications
Low-power consumption design for energy-efficient operation
Simple 3-wire or 4-wire interface for easy integration with existing control boards
PCB Manufacturing
Compact, high-density layout for small form factor
SMT-friendly design for high-volume production
Design optimized for cost-effective manufacturing
| Parameter | Specification |
|---|---|
| Communication | GPRS/GSM (SIM card) |
| Control Outputs | Timer (relay), Pulse (square wave), UART (serial) |
| Form Factor | Coin-sized (approx. 20-25mm) |
| Interface | 3-wire / 4-wire (power, GND, output) |
| Power Input | Low-voltage DC |
| Application | Vending, sharing, self-service |
| Key Features | Remote verification, timer control, pulse counting, serial command |
Compact Integration: Coin-sized module fits into space-constrained devices
Flexible Control: Three output modes support a wide range of device types
Reliable Connectivity: GPRS/GSM ensures remote payment verification anywhere with cellular coverage
Manufacturing Ready: Optimized for high-volume production
Versatile Application: Suitable for vending machines, shared devices, and unattended retail
Vending machines (snacks, beverages, ice cream, eggs)
Shared devices (bikes, scooters, chargers, lockers)
Self-service equipment (laundry, water dispensers, coffee machines)
Unattended retail (adult products, convenience stores)
Shared economy (massage chairs, car sharing, power banks)
Remote control (doors, windows, HVAC, irrigation)
Ready to develop your QR payment or shared economy device project? Contact us to learn how AnyPCBA can support your product development and production.
