InternshipInternshipsSummer 2026·Client / workshop builds

BrainChild Engineering

Hardware Engineering Intern

Designed, fabricated, and shipped client electromechanical systems spanning packaging, power, embedded control, and cloud-triggered actuation.

Executive summary

At BrainChild I owned hardware that had to leave the bench for real client demos and handoffs. The work cut across mechanical packaging, electrical distribution, embedded control, and cloud command queues. The hard part was never one subsystem alone; packaging moved the harness, electrical changes moved the enclosure, and software had to absorb manufacturing tolerances under internship deadlines.

Shipped Vend-A-Shoe: custom enclosure, wall AC→DC / USB-C PD path, Raspberry Pi control, and a cloud dispense queue for a client unit.
Prototyped an automatic tennis-ball launcher on ESP32 with dual RS-775 flywheels, NEMA 17 feed, and MOSFET PWM switching for a phone-driven demo.
Debugged failures that stacked across mechanical clearance, current budget, and software state instead of staying isolated.

ElectromechanicalEmbeddedPower distributionClient deliveryRaspberry PiESP32

Vend-A-Shoe Tennis Ball Shooter BrainChild Engineering site

BrainChild Engineering team in the workshop

Proof

Pictures and demos from the role

Visual evidence first; deeper engineering write-ups live on the related project pages.

BrainChild Engineering internship team — Team at BrainChild during the internship

Assembled client hardware unit — Assembled unit off the breadboard

Wall AC to DC power path — Wall power path from the internship

Soldered protoboard — Soldered distribution board for actuators and accessories

Raspberry Pi control setup — Embedded control on Raspberry Pi

Tennis ball shooter chassis — Tennis-ball launcher chassis prototype

Launcher circuit and chassis — ESP32 launcher power and drive electronics

Go deeper

Related project case studies

Vend-A-Shoe Tennis Ball Shooter