Mini Maestro 18-Channel USB Servo Controller (Assembled) vs Jrk 21v3 USB Motor Controller with Feedback (Connectors Soldered)
Mini Maestro 18-Channel USB Servo Controller (Assembled) and Jrk 21v3 USB Motor Controller with Feedback (Connectors Soldered) are compared below on the data published by their sellers — price converted to euros, stock, and every specification either seller discloses. On price, Mini Maestro 18-Channel USB Servo Controller (Assembled) is €26.01 cheaper ($46.95).
| Criterion |  Mini Maestro 18-Channel USB Servo Controller (Assembled) |  Jrk 21v3 USB Motor Controller with Feedback (Connectors Soldered) |
|---|---|---|
| Price | $46.95cheapest | $76.95 |
| Seller | Pololu | Pololu |
| Availability | In stock | In stock |
| Rating | — | — |
| Frequency max. | — | 20 000 Hz |
| Voltage max. | 16 V | 28 V |
| Voltage min. | 5 V | 5 V |
| Weight | 10 g | 6.52 g |
| Baud | 300 - 200000 bps | — |
| Channels | 18 | — |
| Continuous output current per channel | — | 3 A |
| Control interface | — | USB; non-inverted TTL serial;<br/> RC servo pulses; analog voltage |
| Current sense | — | 0.5 V/A |
| Maximum logic voltage | — | 5 V |
| Minimum logic voltage | — | 4 V |
| Motor channels | — | 1 |
| Motor driver | — | MC33926 |
| Other pcb markings | 0J1969 | — |
| Partial kit | No | No |
| Pcb dev codes | usc03b | — |
| Peak output current per channel | — | 5 A |
| Reverse voltage protection | — | Yes |
| Size | 1.10" x 1.80" | 1.35" x 1.35" x 0.5" |
| Supply current | 40 mA | — |
| 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.