Hardware

COSMIIC Biopotential Amplifier Eval Board

COSMIIC Biopotential Amplifier Eval Board·COSMIIC

COSMIIC BP2 Biopotential Amplifier — AT90CAN128 AVR, 2-channel differential EMG/MES recording, on-board feature extraction, 4-layer micro-via PCB. Altium project, Gerbers, STEP, BOM.

COSMIIC Pulse Generator Eval Board

COSMIIC Pulse Generator Eval Board·COSMIIC

COSMIIC PG4 Pulse Generator — AT90CAN128 AVR, 4-channel monopolar stimulation (0–20 mA, 1–255 μs), triple failsafe, CANopen networked. Altium project, Gerbers, STEP, BOM.

Oliver's LED Nameplate

Oliver's LED Nameplate

USB-C powered desk nameplate spelling OLIVER in 57 white 0603 LEDs. Plug in any phone charger and the name lights up.

KYLE LED Nameplate

KYLE-NAMEPLATE-01·Adom·PCBA-45x16

A tiny 45 x 16 mm LED nameplate badge that spells KYLE — four red LEDs (one per letter), each with its own 330 ohm current-limiting resistor, fed from a 2-pin VCC/GND header. Defined entirely in code with tscircuit.

Wrist Health Tracker

WRIST-HEALTH-TRACKER

A wrist-worn nRF52840 health tracker for sleep-quality scoring: heart rate, HRV, SpO2, steps and skin temperature, logged to flash and synced over BLE to a home server. Four-layer 32 x 30 mm KiCad board with single-sided assembly, a 3D-printed 35.7 x 33.9 x 9.95 mm case and a magnetic pogo-pin dock.

Solar MPPT Power System

A 30 W solar battery charger with regulated 5 V and 3.3 V rails: an STM32G031 running perturb & observe MPPT and a CC/CV charge state machine, steering a TI LM5175 4-switch buck-boost through a single analog control input. Four-layer KiCad board, schematic and PCB generated from Python, with an electrothermal simulation run against the published board file.

OCuLink Riser for the Supermicro AIOM Slot

OCULINK-AIOM-RISER

Passive OCP NIC 3.0 SFF card that breaks a Supermicro AIOM slot's PCIe x16 into four OCuLink 4i ports (4 x4, Gen4): 6-layer, 85 ohm, length-matched, DRC-clean KiCad project with Gerbers, BOM and CPL.