Project Description
I have a pumping system that needs an intelligent, multi-channel controller capable of switching a 220 V load while staying online almost anywhere. The hardware shortlist is already in place, but I want an experienced engineer to turn that list into a fully working unit that can be triggered three ways: Wi-Fi (802.11n), 4 G LTE, and—when nothing else is available—through a Starlink connection routed from the controller’s Ethernet port.
Here is what I need from you:
• Electronic design: finish the schematic around my existing parts list, size the power supply for 220 V, choose the right relays/solid-state switches, and ensure the radio modules do not introduce interference.
• Firmware: write clean, well-documented code that listens simultaneously for Wi-Fi and LTE commands, falls back to Starlink when cellular strength drops, and publishes status pings so I always know the pump’s state.
• Mobile app interface: the controller will be driven through a simple Android/iOS app. I’m looking for a slick on/off toggle, live feedback (current draw, fault codes), and basic scheduling.
• Prototype & test: assemble at least one prototype, prove that it survives a 220 V stress test, log uptime on all three networks, and deliver a short video demo.
Acceptance is straightforward: a powered-up prototype that I can switch on with the mobile app over 802.11n, kick over to 4 G LTE, and finally confirm remote reachability once routed through a Starlink terminal. Once those three scenarios run without a hiccup, we’re done.