I design the analog front-end, route the PCB, write the firmware, and bring it up on the bench. Most of my work sits at the boundary between biosignal sensing (EEG, ECG, PPG, EMG) and embedded systems — ARM Cortex MCUs, low-noise mixed-signal layout, BLE wearables, and the occasional Linux-class SOM carrier.

Based in Islamabad, Pakistan. Studying at COMSATS University. Available for biosensor hardware, medical-grade PCB design (SI-aware multi-layer), and firmware R&D.

📫 hiibrarahmad@gmail.com · LinkedIn · Portfolio · Fiverr

Carrier board for the INVENSOM-6UL (NXP i.MX 6ULL) Linux SOM, designed for a clinical handheld dermatoscope by Revive Medical Technology. Routed in Altium with attention to the camera/display lanes, power sequencing, and form-factor constraints of the handheld enclosure. _{Stack: Altium · i.MX 6ULL · Embedded Linux · multi-layer PCB}

Two-board wearable: a main board around the Nordic nRF5340 with IPS + e-Paper displays, BLE 5.3, IMU, BME680 environmental, and CCS811 air-quality sensors — plus a wireless charging board with BQ51003 Qi receiver, BQ25100 charger, and MAX86150 PPG/ECG sensor for heart-rate + SpO₂. _{Stack: Altium · nRF5340 · BLE 5.3 · MAX86150 · BQ51003 · Qi 1.2.4}

Pin-for-pin UNO-compatible board on 2-layer FR4. Modernized with USB Type-C, CH340G serial bridge, full shield compatibility, and through-hole headers for hobbyist rework. The board you reach for when you want UNO ergonomics without the legacy USB-B. _{Stack: KiCad · ATmega328P · CH340G · USB-C}

• ⬆️ Pushed 1 commit to main in hiibrarahmad/hiibrarahmad.github.io — Fix invisible cursor on admin dashboard and remove plaintext passcode · 3d ago
• ⬆️ Pushed 1 commit to main in hiibrarahmad/hiibrarahmad.github.io — Fix dead Unsplash image link on Precision Power Management card · 3d ago
• ⬆️ Pushed 1 commit to main in hiibrarahmad/hiibrarahmad.github.io — Replace static portfolio with new hardware-focused React/Vite site · 3d ago
• 🌱 Created branch master in hiibrarahmad/neuro1111 · 2026-08-03
• ⬆️ Pushed 1 commit to main in hiibrarahmad/IARmouse — Surface a clear message when Logitech G HUB blocks WebHID access · 2026-08-02
• ⬆️ Pushed 1 commit to main in hiibrarahmad/IARmouse — Add real HID++ support for wired Logitech gaming mice (G403, etc.) · 2026-08-02
• 🌱 Created branch main in hiibrarahmad/IARmouse · 2026-08-02
• ⬆️ Pushed 1 commit to main in hiibrarahmad/JL701N_LUNIX — Delete DOC FIRST SDK directory · 2026-07-28

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