InternshipInternshipsSummer 2026·Client / workshop builds

BrainChild Engineering

Hardware Engineering Intern

Built client electromechanical systems that had to leave the bench: enclosure, power distribution, embedded control, and cloud-triggered actuation.

Executive summary

At BrainChild, I worked on builds that had to run in front of clients; not just in a lab corner. Most failures crossed subsystem boundaries, so the job was integration discipline: mechanical packaging, electrical rails, embedded logic, and cloud command paths that stayed aligned under time pressure.

Shipped Vend-A-Shoe: web command queue to Raspberry Pi worker to servo actuation on a packaged client unit.
Built a tennis-ball launcher prototype on ESP32 with dual RS-775 flywheels, NEMA 17 feed, and PWM-switched MOSFET drive.
Debugged cross-layer failures across power, mechanical fit, and software state instead of guessing in one subsystem.

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