Schematik, Soldr, and a line follower that wants to race

August 22, 2026

Part of our series putting one prompt through Soldr live and comparing notes with another AI tool. Guest session, screenshots unedited.

The comparison we respect most

Schematik (schematik.io, “Build Hardware With AI”) is the closest thing to a sibling in this space — a serious, Lightspeed-backed all-in-one hardware development environment that the press likes to call “Cursor for hardware.” If your job is designing hardware all day, go look at it. The difference is the shelf: Schematik retrieves parts from external component databases. Soldr is the store — every part it names is our own live stock with a rupee price and a courier behind it.

The prompt

"A line following robot that races around a black track on its own."

Soldr consultative reply: racing-grade 5-channel PID build vs beginner 2-channel build, with the racing-grade choice selected — Before picking a single part it asked the one question that shapes the build: how serious is the racing? 5-channel IR + PID for carving corners, or 2-channel on/off steering for a first build. We said “racing,” so it leaned racing-grade — “the PID tuning is the fun part.”

The tray — and an honest correction

Soldr parts tray for the racing line follower: Uno, 5-channel sensor, two geared motors, chassis, L298N — with the power-budget warning visible — The tray, with the engine's own power-budget warning on screen: the two motors can pull ~4A at stall — “more than a small battery sustains for long.”

Full transparency: the engine's automatic pick for the power slot was a small 3.7V LiPo, and its own Common Problems list said the battery didn't match the 12V motors. It flagged its own mistake and recommended an 18650 pack in the same breath — so in the buy list below we've done exactly that, from the same shelf. (The mis-pick is logged as a defect in our tracker; when it's fixed, this paragraph becomes history.)

The buy list — tray plus the corrected power pack

Part	Price
Arduino Uno R3 CH340G ATmega328P Board	₹230
TCRT5000 5-Channel Line Tracking Sensor	₹100
DC Geared Motor 12V 1000RPM × 2	₹660
2 Wheel Smart Car Robot Chassis Kit	₹610
L298N Motor Driver Module	₹180
Dupont Jumper Wire Kit	₹60
2×18650 Battery Holder with Switch	₹108
18650 Li-ion Battery 2600mAh × 2	₹600
Total	₹2,548

When to use which

If you're designing a board from scratch in a professional flow, tools like Schematik are built for that. If you want a robot carving a black-tape track this weekend — Soldr turns the sentence into ₹2,548 of real stock, pin-by-pin wiring, and PID firmware you pay for per generation (first free, capped at ₹150). No subscription either way from us.

Schematik description from its own site and press coverage at time of writing. Screenshots from a signed-out guest session on app.soldr.ai, warnings included. Soldr numbers are the live values in our deployed billing code.

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