VaAmi the communication device
Budget: ₹12,500 – ₹37,500 INR
I have sketched out Vaami—an elegant, pocket-sized gadget that lets people exchange full voice and text messages anywhere, even across countries, without a smartphone. My role will be to steer the vision, user experience, and overall look; I need an electronics engineer who can turn the concept into a working prototype.
You’ll be focusing on the core electronics and firmware. Because your background is in electronics engineering and you’re most comfortable with wireless communication modules, I’d like you to specify the PCB, select components, and code the stack around a low-power microcontroller. For long-range, low-cost connectivity I’m leaning on LoRa, so experience with Semtech SX127x/SX126x-class radios, LoRaWAN or custom LoRa mesh, and the associated RF layout practices is essential.
Key goals
• Impeccable reliability—messages must never be lost, even when links drop.
• Voice as well as text, so an efficient audio codec, buffering, and storage scheme are required.
• A clean, simple UI: tactile buttons and a modest e-ink or OLED display that anyone can navigate.
• Portability and style: compact board, lithium-ion battery management, and thoughtful power budgeting to hit several days of mixed use.
Deliverables
1. Schematics and PCB gerbers ready for fabrication
2. Fully commented firmware implementing LoRa messaging, store-and-forward reliability, and basic UI flow
3. BOM with sources, power consumption estimates, and suggested enclosures
4. One assembled, tested prototype with demo of voice + text exchange
I will supply all industrial design sketches and be available daily for iterative feedback. If you’re excited to build something that can keep people connected when phones fail, let’s discuss timelines and any additional resources you’ll need.
You’ll be focusing on the core electronics and firmware. Because your background is in electronics engineering and you’re most comfortable with wireless communication modules, I’d like you to specify the PCB, select components, and code the stack around a low-power microcontroller. For long-range, low-cost connectivity I’m leaning on LoRa, so experience with Semtech SX127x/SX126x-class radios, LoRaWAN or custom LoRa mesh, and the associated RF layout practices is essential.
Key goals
• Impeccable reliability—messages must never be lost, even when links drop.
• Voice as well as text, so an efficient audio codec, buffering, and storage scheme are required.
• A clean, simple UI: tactile buttons and a modest e-ink or OLED display that anyone can navigate.
• Portability and style: compact board, lithium-ion battery management, and thoughtful power budgeting to hit several days of mixed use.
Deliverables
1. Schematics and PCB gerbers ready for fabrication
2. Fully commented firmware implementing LoRa messaging, store-and-forward reliability, and basic UI flow
3. BOM with sources, power consumption estimates, and suggested enclosures
4. One assembled, tested prototype with demo of voice + text exchange
I will supply all industrial design sketches and be available daily for iterative feedback. If you’re excited to build something that can keep people connected when phones fail, let’s discuss timelines and any additional resources you’ll need.