LED tachometer
A potentiometer simulates engine speed between 0 and 5 V. A TLV1704 quad comparator checks that signal against four reference voltages and turns on one more LED at each.
Five 10 kΩ resistors set 1, 2, 3 and 4 V
RayannSagnon
Electrical Engineering student at uOttawa. Looking for a hardware internship, summer 2027.
Electrical Engineering, University of Ottawa.Hardware internship, summer 2027.
Connect on LinkedInAutomotive Dashboard PCB
- Organization
- uOttawa Supermileage
- Board
- Two layers, USB-C power
- Tools
- Altium Designer
- Status
- Manufacturing files ready, not fabricated
Overview
For uOSupermileage's electrical initiation project, each member designs their own version of a simplified dashboard. Mine is a custom two-layer PCB with three functions, taken from schematic to manufacturing files.
What it covers
- Analog circuit design
- Component selection and footprints
- Two-layer PCB routing
- Design rule checks
- Gerber and NC drill output
Three functions, one board
Turn signals
A TLC555 in astable mode blinks the left and right LEDs through a two-position switch. Each position drives one side, and both together give hazards.
T = 0.693 × (R14 + 2 × R15) × C1 = 0.67 s, about 1.5 Hz
Automatic headlights
A TLC555 wired as a Schmitt inverter reads a divider made with a light-dependent resistor. Its two thresholds keep the LEDs from flickering when the light sits near the limit.
With R18 = 10 kΩ: on above 20 kΩ, off below 5 kΩ
USB-C power
VBUS feeds the 5 V rail for the whole board. The connector is wired for power only, so the data pins stay unconnected.
5.1 kΩ on CC1 and CC2 request 5 V from the source
From schematic to manufacturing files
- SchematicsFour sheets in Altium
- Parts and footprintsComponent selection and footprint management
- Placement and routingTwo-layer board routed in Altium
- Design rule checkNo unrouted nets, copper clearance or short-circuit violations
- Manufacturing filesGerber and NC drill files generated
I drew the schematic twice
The first one was unreadable. Wires crossed everywhere, and I had repeated a part when a different type of comparator would have done the job. I started over and used net labels.
A short I fixed before fabrication
The potentiometer's wiper was tied to +5 V, so turning it could have connected +5 V to GND. I separated RPM_SIGNAL from the +5 V net and updated the PCB.
Expected behaviour, not tested yet
- Under 1 V
- No LED
- 1 to 2 V
- 1 LED
- 2 to 3 V
- 2 LEDs
- 3 to 4 V
- 3 LEDs
- Over 4 V
- 4 LEDs
Where it stands
The PCB design and manufacturing files are ready. Fabrication, assembly and electrical testing are still to come.
Standout Studio
I co-founded a bilingual web studio in Ottawa. My part is mainly design and code. Clients have paid us about $3K CAD so far.
- Client meetingsWe work out what the client needs
- ProposalScope, budget and timeline
- Design and codeMy main part, with client feedback along the way
- LaunchWe put the site live and show the client how to update it
An all-in-one wellness app for iPhone, with an AI guide called Malo. I co-founded it with Seryne Ould Rabah and lead the technical side.
I designed the Onboarding, Training, Profile and Settings screens, and I'm responsible for privacy.
- Malo proposes, you decideEvery change is explained, accepted in one tap and can be undone.
- The AI writes, the code checksNutrition values, energy ranges and training loads are always computed by code.
- Native and offline firstSwiftUI, data stored on the phone, 5,993 Canadian foods searchable offline.
In development, not released yet. Waitlist open at goforit.fit
Interface design, Training and Malo
Built from kits
Two kits I built, and what I added to each.
- RC-X carElegoo Arduino car kit. I added control from my phone.
- Robotic armAdeept kit. I added computer vision.
Video coming soon: the RC-X car driven from a phone
Video coming soon: the robotic arm and its computer vision
From Ouagadougou to Ottawa
Ouagadougou, Burkina Faso
Bikes, TVs and a Nintendo DS
I kept modifying my bike to add features I wanted. When a TV at home showed No Signal, I went looking for the fix. I also modded my Nintendo DS.
Burkina Faso
Hackathon and internship
In 2022, my team took first place among 135 participants at the Orange From Scratch hackathon. In summer 2023, I did an observation internship at CVP Burkina, assisting the webmaster.
Ottawa, Canada
Electrical Engineering
I moved from Software Engineering to Electrical Engineering at the University of Ottawa. I want to work on whole systems, from the sensor and circuit to the code that drives the motor. I designed my first PCB with uOSupermileage.
Long before Apple Intelligence, I used iPhone Shortcuts to connect Siri to the OpenAI API. When I said “Siri Pro”, I was talking to ChatGPT.
Experience
Online Training and Engagement Assistant
University of Ottawa, May to August 2026I built accessibility training modules for university staff, using Articulate and Brightspace.
IT Support Assistant
uOttawa Faculty of Engineering, Jan to Apr 2026I fixed hardware and software problems for students and staff, and tracked the tickets.
IT Facilities Coordinator
Groupe scolaire les Lauréats, 2023 to 2025I looked after the school's computers, printers and networks, and trained more than 50 teachers and students.
First place, Orange From Scratch
Hackathon, 135 participants, 2022Next step: your company?
Hardware internship, summer 2027, 4 months
I fixed hardware and software problems for students and staff, and tracked the tickets.
I looked after the school's computers, printers and networks, and trained more than 50 teachers and students.
I built accessibility training modules for university staff, using Articulate and Brightspace.
First place, Orange From ScratchHackathon, 135 participants, 2022
Hands-on skills
Soldering
Hands-on, uOttawa course labs
Oscilloscope
Hands-on, uOttawa course labs
Arduino
Projects, RC-X car and robotic arm
Altium Designer
First PCB: schematics, footprints and two-layer routing for uOSupermileage
Computer hardware support
Work experience, uOttawa Faculty of Engineering and Groupe scolaire les Lauréats
ELG 2138, Circuit Theory I
University of Ottawa, in progress fall 2026
- SolderingHands-on, uOttawa course labs
- OscilloscopeHands-on, uOttawa course labs
- ArduinoProjects, RC-X car and robotic arm
- Altium DesignerFirst PCB: schematics, footprints and two-layer routing for uOSupermileage
- Computer hardware supportWork experience, uOttawa Faculty of Engineering and Groupe scolaire les Lauréats
- ELG 2138, Circuit Theory IUniversity of Ottawa, in progress fall 2026
