AliExpress gadgets and Tindie indie maker products — every item tested with real data. Specs, teardowns, and concrete money-making strategies for each review.
Browse Reviews →
Cellular push-to-talk radios with unlimited range, 7-day battery, and durable housing. Rent to events, construction crews, and film productions.
DC1036L UPS with sub-microsecond switchover. Keep routers, servers, and security systems running through outages. Resell to local businesses.
CH9143 BLE/UART/USB module for wireless microcontroller development. IoT sensor installations, debugger kits, and teaching revenue.
XPM52C USB-C PD decoy board — full teardown, bench test data, and 3 profitable plays. Bench-tested with verified results.
SOIC8 + USB — $150/job profit angle.
10A Optocoupler — $300/install profit angle.
3A / 92% — $50 kits profit angle.
WS2812B draws 60mA per LED at full white. Multiply, divide by 0.8 for headroom, and never power a strip from an ESP32 pin — the arithmetic, worked through.
Same voltage, same data rate, same colour order. The one real hardware difference is a dedicated white LED, and one popular spec claim fails a datasheet check.
The eight wiring faults behind every NaN reading, each settled by the Aosong datasheet: 3.3V supply, 4.7k pull-up, 2s interval, no GPIO34–39. Ends in a working Home Assistant config.
Full wiring diagram, power budget for 30 to 300 LEDs, the 330Ω data resistor, Home Assistant pairing, and the five mistakes that permanently damage boards.
Every review on this site follows the same format:
No fluff. No filler. Just the signal.