Robot compute & controller modules for sale
Onboard computers, motor drivers, and control modules tuned for whole-body humanoid control.
The compute module is the brain of the operation, and secondhand units are attractive because they're often pulled during upgrades rather than failures. What matters: enough real-time performance for your control loop (whole-body control wants deterministic low-latency I/O, not just raw FLOPS), 48V-tolerant power input for humanoid power buses, and the software that's already on it — a module shipping with a working locomotion stack saves weeks.
Check the I/O before the specs sheet: CAN buses, EtherCAT masters, encoder inputs, and IMU interfaces are what connect the brain to the body. A powerful GPU board with no real-time I/O is a perception computer, not a controller — fine for vision, useless for balance.
Motor driver boards are the other half of this category. Match voltage and current ratings to your actuators with headroom — a driver running at 100% rated current will cook itself. Bundles that include the compute plus matched drivers from a single decommissioned platform are often the best value.
Current listings (1)
from $2,100
Buying guide — FAQ
What specs matter in a humanoid control computer?
Deterministic low-latency I/O (CAN, EtherCAT, encoder inputs) matters more than raw compute. Whole-body balance loops need real-time performance, not just FLOPS.
Can I use a regular mini-PC as a robot controller?
For high-level planning, yes. For joint-level control loops, you need real-time I/O that consumer PCs lack — that's what dedicated control modules provide.
Should drivers match my actuators exactly?
Match voltage and leave current headroom — size drivers for at least 130% of your actuators' peak draw. Overstressed drivers are a classic failure point.
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