Contact person: Business Client

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Location: longport, United States

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I’m building a motor-driven door lock around an Arduino board and want the locking action released only after a customer pays with either Venmo or Apple Pay. The mechanical side is already defined—servo/gear motor, latch, housing—so this job is purely on the code and transaction side.

Here’s what I need delivered:
• Arduino-side firmware that listens for a “payment approved” signal and then drives the motor to unlock/lock, with a simple timeout and status feedback over serial.
• Companion scripts or micro-service that handles Venmo and Apple Pay checkout, verifies the payment in real time, and relays the approval to the Arduino (Bluetooth, Wi-Fi, or serial—whichever you recommend).
• Clear build/run instructions plus a quick demo video or screenshots showing a successful flow from payment to motor actuation.

Feel free to leverage existing payment SDKs, OAuth, webhooks, or NFC/BLE libraries as long as the end-to-end latency is low enough that a user isn’t waiting at the door. Security and reliability are top priorities, so please outline any encryption methods and sandbox testing you plan to use.

I’ll handle hardware procurement and physical assembly; I simply need solid, well-documented software and gateway integration so I can drop it in and start testing on the bench.

Will need help identifying and sourcing the needed parts and support with anything I have to do on this side (breadboard, arduino parts integration...)" (client-provided description)