Tag: #electronics
Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 20 posts
20 posts are tagged #electronics; the most recent was published on 2026-08-02.
Often tagged together: #hardware 11 #arduino 8 #2026-03 7 #raspberry-pi 6 #robotics 6
Most read in the last 90 days:
The Math You Need for Robotics, in Order: And What You Can Safely Put Off ♪ Listenable
An answer to how far you actually need to take your math to build a robot arm. Organized into six branches in order: linear algebra, trigonometry and rotation representations, calculus and multivariable methods, differen
2026-08-02 · 25 min read #robotics#math#electronics#linear-algebra#controlWhat a Robot Arm Is Made Of: Links, Joints, and What Actually Drives Them ♪ Listenable
Buy six servos to build a robot arm and it almost always collapses under its own weight. This post starts from the precise definitions of link, joint, and end effector, explains what degrees of freedom actually count and
2026-08-02 · 29 min read #robotics#hardware#electronics#arduino#mathForward Kinematics: From Joint Angles to End-Effector Position with Homogeneous Transforms and DH Parameters ♪ Listenable
Forward kinematics is calculating where the end effector is when you know the joint angles. This post shows, with real numbers, how the 4x4 homogeneous transformation matrix resolves the mismatch between rotation (matrix
2026-08-02 · 23 min read #robotics#math#electronics#raspberry-pi#hardwareThe Robot Arm Control Loop: From Trajectory Generation to PID and Gravity Compensation ♪ Listenable
Everything past the point where inverse kinematics hands you joint angles belongs to control. This post explains, through discontinuous acceleration, why writing the target angle straight into the servo makes the arm jer
2026-08-02 · 24 min read #robotics#electronics#arduino#hardware#mathInverse Kinematics: Working Backward from Where You Want to Be to the Joint Angles ♪ Listenable
Forward kinematics is a single calculation — feed in angles, get a position. Inverse kinematics can have no solution, several solutions, or infinitely many. This post derives the analytic solution for a 2-link planar arm
2026-08-02 · 22 min read #robotics#math#electronics#hardware#raspberry-piOhm's Law for Programmers: Understanding Voltage, Current, and Resistance in Numbers ♪ Listenable
An Ohm's law guide for software engineers picking up an Arduino or Raspberry Pi for the first time. It redefines voltage not as a "quantity" but as a difference between two points, and pins down exactly where the water a
2026-07-31 · 19 min read #electronics#arduino#circuit#hardware#makerDriving Motors, Relays, and Inductive Loads: Why You Should Never Power a Motor from GPIO ♪ Listenable
A GPIO pin can supply tens of milliamps; a small DC motor demands hundreds. This post works through the accidents that gap causes, one by one. It covers using a separate power supply and why you must tie the grounds toge
2026-07-31 · 23 min read #electronics#arduino#hardware#maker#iotPull-Up, Pull-Down, and Floating Pins: Why a Single Button Is So Hard to Get Right ♪ Listenable
Starts from why an input pin with nothing connected to it randomly flips between 0 and 1. Explains why a floating input behaves like an antenna, how pull-up and pull-down resistors solve that problem, and what the intern
2026-07-31 · 20 min read #electronics#arduino#raspberry-pi#circuit#hardware3.3V vs 5V and Level Shifting: Why Raspberry Pi GPIO Can't Survive 5V ♪ Listenable
Wire a 5V sensor straight into a Raspberry Pi GPIO pin and the pin dies. This post starts from the definition of logic levels to explain exactly why. It covers what the VIH and VIL thresholds mean, why a 3.3V output is u
2026-07-31 · 20 min read #electronics#raspberry-pi#arduino#hardware#iotLED Resistor Calculations Done Right: Why Every Color Needs a Different Value, and the E24 Series ♪ Listenable
Starting from a diode's exponential current curve, this explains why an LED must always have a series resistor. It tables forward voltage by color, then works out real resistor values for both 5V and 3.3V supplies. It co
2026-07-31 · 21 min read #electronics#arduino#circuit#hardware#raspberry-piFingerScore Hardware 2 — Electronics Fundamentals (From Voltage, Current, and Resistance to Digital Signals) ♪ Listenable
Everything you need from electronics fundamentals to build the FingerScore ring device, in one piece. We walk through Ohm law and voltage dividers, pull-up and pull-down resistors, capacitors, LED current-limiting calcul
2026-06-17 · 23 min read #fingerscore#electronics#hardware#gpio#i2cBuilding FingerScore Hardware 1 — System Design and Bill of Materials (BOM) ♪ Listenable
This is part one of a hardware series on building the FingerScore ring-shaped score recorder yourself. It walks through translating product requirements into circuits, the system block diagram from sensor to MCU to radio
2026-06-17 · 29 min read #fingerscore#hardware#electronics#ble#embeddedIntroduction to Biotech & Mechanical Engineering -- Engineering Fundamentals for Building Drones
Want to build a drone? From electrical/electronic fundamentals, motors, circuits, and control theory to biotech and mechanical engineering basics -- core engineering concepts explained simply.
2026-04-11 · 12 min read #ai#engineering#biotech#mechanical#droneSignal Processing & Control Systems Guide: From Fourier Transform to PID Control
A comprehensive guide to signal processing and control systems for electrical/electronics engineering students. Covers Fourier Transform, FFT, digital filters, Z-transform, and PID control with Python scipy/numpy example
2026-03-17 · 17 min read #signal-processing#control-systems#fourier-transform#fft#pid-controlSemiconductor Physics & Devices Complete Guide: From Energy Bands to FinFET
A complete guide to semiconductor device physics. Covers quantum mechanics fundamentals, energy band theory, electrical properties, p-n junctions, MOSFET, FinFET, and cutting-edge GAA transistors.
2026-03-17 · 14 min read #semiconductor#semiconductor-physics#pn-junction#mosfet#finfetPower Electronics & Electric Machinery Guide: From DC-DC Converters to BLDC Motor Control
A comprehensive guide to power electronics and electric machinery for EE students. Covers DC-DC converters (Buck/Boost), inverters, PWM control, transformers, induction motors, and BLDC motor control with Python simulati
2026-03-17 · 15 min read #power-electronics#electric-machinery#dc-dc-converter#inverter#motor-controlDigital Logic Design Complete Guide: From Boolean Algebra to CPU Design
A comprehensive guide to digital logic design for electronics and electrical engineering students. Covers Boolean algebra, logic gates, combinational circuits, sequential circuits, FSM, FPGA, and Verilog HDL with hands-o
2026-03-17 · 18 min read #digital-logic#computer-architecture#boolean-algebra#logic-gates#fpgaComputer Architecture Complete Guide: From ISA to GPU Parallel Architecture ♪ Listenable
A comprehensive guide to computer architecture covering ISA, datapath, pipelining, cache memory, virtual memory, RISC-V, and GPU parallel architecture with code examples.
2026-03-17 · 23 min read #computer-architecture#cpu#gpu#pipeline#cacheElectronic Circuits Complete Guide: From Diodes to Op-Amps
A comprehensive guide to electronic circuits for EE students. Covers diodes, BJT/MOSFET transistors, operational amplifiers, amplifier design, and filter circuits with SPICE simulation and Python examples.
2026-03-17 · 16 min read #electronic-circuits#analog-electronics#diode#transistor#op-ampElectronics for Developers — From Arduino to AI Robotics
A guide for software developers expanding into the hardware world. From Arduino basics to sensor control, ESP32 IoT, and AI + hardware fusion projects. If you can write code, electronics is easier than you think.
2026-03-03 · 7 min read #ai#arduino#electronics#embedded#iot