1122334455667788AABBCCDDEE

Desmond Brown

Electrical engineering: Academic City University, Accra, and from October 2026 HTW Dresden

I came to electrical engineering from eight years of software. This sheet is the honest state of that work: what I have built, which course fed it, and which ideas are still only ideas.

GE1205 Multidisciplinary designGE1207 Sensors & instrumentationGE1206 Programming in CUC1104 Programming with PythonRE2145 Circuit theoryCE1246 Intro to EEEEE2146 Energy conversionEE2147 EM fields & wavesGE2105 Materials scienceBiometric attendanceS1sheet 2, group of 7, Aug 2025DESIGNSENSINGFIRMWAREHOST APPArduino Uno and an RC522RFID reader, talking to aPython desktop app overserial. Fingerprint pathplanned, not fitted.enter sheet ▸Proof noteN1Obsidian notes, 2025-09-25Nodal analysis of a linear circuitgives linear equations.Circuit StudioS2in Quodra, Sep 2026NODALNodal DC analysis, an ACsweep and a backward-Eulertransient solver inside apresentation editor.enter sheet ▸Hydroelectric mini projectS7sheet 7, group build, 2025A water turbine driving a generator.enter sheet ▸StrainS3materials lab, Dec 2025SPECIMENSPYTHONYoung's modulus, tensilestrength, failure strainfrom testing-machine data.enter sheet ▸Sisal-fibre compositeS4group of 6, Oct 2025SPECIMENSLaterite, clay, cement and0–25 % sisal fibre, testedin bending and compression.Bench PSUS5Rev A, Jan 2026, KiCadAC INTransformer, bridgerectifier, 10,000 µFreservoir. Unregulated;the regulator comes next.enter sheet ▸MAINSDC motor, 12 VS6sheet 6For a table-top blade:60 mm rotor, 5 mm shaft.EMF and torque derived;the design comes next.enter sheet ▸+−12 VRobot ideasDNPideas, not builtSwitchable wheels, and arobot of small joinablepieces. Neither built.SYMBOLSnetjunction, nets joinedno connect: nothingbuilt from it yetDNP: an idea, not built▸ Hover a course to trace its net.NET GE1205 DESIGN feeds S1, the attendance system's designNET GE1207 SENSING feeds S1, the RFID reader and its wiringNET GE1206 C feeds S1, the Arduino firmwareNET UC1104 PYTHON feeds S1 host app and S3 analysisNET RE2145 CIRCUIT THEORY feeds N1, the linearity proof, then S2's nodal solverNET EE2146 ENERGY CONVERSION feeds S7, the hydroelectric mini projectNET GE2105 MATERIALS feeds S3 Strain and S4 the sisal composite testsNET MAINS 230 V 50 Hz feeds S5, the bench supplyNET 12 V DC feeds S6, the motor being designed

NOTES

  1. Group projects state the team size and my part on their own sheet.
  2. Quantities appear only where they were measured.
  3. Hover a course to trace its net. Click a sheet to enter it.
  4. Redlines to browndesmond30@yahoo.com.
REVISIONSREVDATEDESCRIPTIONA2025-08Biometric attendance: RFID path on demo dayB2025-09Proof note on linearity and superpositionC2025-10Sisal-fibre composite: bending and compressionD2025-11Hydroelectric mini project: planned, then builtE2025-12Strain: stress–strain analysis toolF2026-01Bench PSU, Rev A: unregulated supplyG2026-04DC motor: derivation, and a 12 V design specifiedH2026-09Circuit Studio solvers in QuodraTITLEDesmond Brown, electrical engineeringSHEET/ rootNO.1 of 7REVHDATE2026-09-27DRAWND. BrownSIZEA3GO TO◂ previoussheet 2 ▸OTHER VIEWSDEVPHYSICSACADEMICee.desmondbrown.me

/ ROOT

Desmond Brown

Electrical engineering: Academic City University, Accra, and from October 2026 HTW Dresden

I came to electrical engineering from eight years of software. This sheet is the honest state of that work: what I have built, which course fed it, and which ideas are still only ideas.

SHEET1 of 7REVHDATE2026-09-27
OTHER VIEWSDEVPHYSICSACADEMIC

Tap a course to see it in the record.

GE1205 Multidisciplinary designGE1207 Sensors & instrumentationGE1206 Programming in CUC1104 Programming with Python
Biometric attendanceS1
Arduino Uno and an RC522 RFID reader, talking to a Python desktop app over serial. Fingerprint path planned, not fitted.
sheet 2, group of 7, Aug 2025enter sheet ▸
RE2145 Circuit theory
Proof noteN1
Nodal analysis of a linear circuit gives linear equations.
Obsidian notes, 2025-09-25
Circuit StudioS2
Nodal DC analysis, an AC sweep and a backward-Euler transient solver inside a presentation editor.
in Quodra, Sep 2026enter sheet ▸
EE2146 Energy conversion
Hydroelectric mini projectS7
A water turbine driving a generator, planned and built with a group for Energy Conversion.
sheet 7, group build, 2025enter sheet ▸
GE2105 Materials scienceUC1104 Programming with Python
StrainS3
Young's modulus, tensile strength and failure strain from testing-machine data.
materials lab, Dec 2025enter sheet ▸
GE2105 Materials science
Sisal-fibre compositeS4
Laterite, clay, cement and 0–25 % sisal fibre, tested in bending and compression.
group of 6, Oct 2025
MAINS
Bench PSUS5
Transformer, bridge rectifier, 10,000 µF reservoir. Unregulated; the regulator comes next.
Rev A, Jan 2026, KiCadenter sheet ▸
+−12 V
DC motor, 12 VS6
For a table-top blade: 60 mm rotor, 5 mm shaft. EMF and torque derived for Electric Machines; the design comes next.
sheet 6, Apr 2026enter sheet ▸
Robot ideasDNP
Switchable wheels: mecanum rollers when it must strafe, plain wheels when it needs grip. And a robot built from small joinable pieces. Neither is built.
ideas, not built

TAKEN, NOTHING BUILT FROM IT YET

CE1246 Intro to EEEEE2147 EM fields & waves

NOTES

  1. Group projects state the team size and my part on their own sheet.
  2. Quantities appear only where they were measured.
  3. Redlines to browndesmond30@yahoo.com.

REVISIONS

A2025-08Biometric attendance: RFID path on demo day
B2025-09Proof note on linearity and superposition
C2025-10Sisal-fibre composite: bending and compression
D2025-11Hydroelectric mini project: planned, then built
E2025-12Strain: stress–strain analysis tool
F2026-01Bench PSU, Rev A: unregulated supply
G2026-04DC motor: derivation, and a 12 V design specified
H2026-09Circuit Studio solvers in Quodra
TITLEDesmond Brown, electrical engineering
◂ previous1 / 7sheet 2 ▸