Pololu USB-to-Serial Adapter vs QTR-HD-31RC Reflectance Sensor Array: 31-Channel, 4mm Pitch, RC Output
Pololu USB-to-Serial Adapter and QTR-HD-31RC Reflectance Sensor Array: 31-Channel, 4mm Pitch, RC Output are compared below on the data published by their sellers — price converted to euros, stock, and every specification either seller discloses. On price, Pololu USB-to-Serial Adapter is €14.87 cheaper ($17.95).
| Criterion |  Pololu USB-to-Serial Adapter |  QTR-HD-31RC Reflectance Sensor Array: 31-Channel, 4mm Pitch, RC Output |
|---|---|---|
| Price | $17.95cheapest | $35.11 |
| Seller | Pololu | Pololu |
| Availability | In stock | In stock |
| Rating | — | — |
| Voltage max. | — | 5.5 V |
| Voltage min. | — | 2.9 V |
| Weight | 5.7 g | 8.5 g |
| Led current | — | 30 mA |
| Maximum current draw | — | 495 mA |
| Maximum range | — | 50 mm |
| Optimal range | — | 5 mm |
| Other pcb markings | — | 0J11376 |
| Output type | — | RC (measurable by digital I/O) |
| Pcb dev codes | — | irs51a |
| Peak wavelength | — | 940 nm |
| Sensor count | — | 31 |
| Sensor pitch | — | 4 mm |
| Sensor type | — | QTR |
| Size | — | 125.0 × 16.5 × 2.5 mm |
| View at seller ↗ | View at seller ↗ |
Specifications are extracted automatically from seller data — an empty cell means the seller does not publish that value, not that the product lacks it.
Robotitem does not test products. This comparison reports seller-published data only, and ranking never takes affiliate commission into account.