Engineering-first robotics, AI, maker hardware, STEM, and creator technology reporting
A practical sequence for separating probe, threshold, sample-rate, and SPI-mode errors before trusting decoded bytes from a logic analyzer.
When an SPI Logic Analyzer Decodes the Wrong Bytes Read More
Use Linux persistent serial links and narrow udev rules to keep robot sensors, controllers, and lab instruments from switching between ttyUSB numbers.
Give Linux USB Serial Devices Stable Names with udev Read More
Arduino Core on Zephyr 1.0.0 pins Zephyr 4.4.1, lists 12 supported board targets, and adds camera support for specific Nicla Vision and GIGA configurations.
Arduino Core on Zephyr 1.0 Adds a 12-Board Matrix and Camera Support Read More
MQTT retained messages are useful for state but risky as actuator commands. Separate topics, add MQTT 5 expiry and clear legacy retained payloads.
MQTT Retained Commands Can Replay Stale Actuator State Read More
Use the motor’s per-phase rating and the carrier’s sense-resistor formula to set DRV8825 VREF, then verify coil current and thermal behavior.
Set DRV8825 Current Limit Without Trusting Supply Current Read More
AMD’s Threadripper Halo Station prototype combines a 96-core workstation CPU with up to four MI350P accelerators and 576 GB of HBM3E.
AMD Threadripper Halo Station Packs Up to 576 GB of HBM3E Read More
Diagnose false filament runout by separating sensor mechanics, raw input, Marlin M119/M412 behavior, wiring and host response.
Filament Runout Errors: Check the Sensor Path Before Replacing Parts Read More
Calculate I²C pull-up limits from rise time, capacitance and sink current, then verify parallel resistors and real waveforms.
I²C Pull-Ups: Calculate the Valid Resistor Range Read More
Diagnose microcontroller brownout resets by preserving reset reason, triggering on the load event and measuring the supply at the MCU power pins.
Microcontroller Brownout Resets: Capture the Voltage Droop Read More
Trace legal A/B transitions to find whether rotary encoder counts are lost at the mechanism, electrical input, sampling stage or decoder.
Rotary Encoder Missed Counts: Trace the A/B State Sequence Read More