Engineering-first robotics, AI, maker hardware, STEM, and creator technology reporting
An ADS1115 repeatedly returning 0x7FFF has reached positive full scale. Check the PGA range and absolute input limits before treating extra samples as more precision.
ADS1115 Full-Scale Codes: Why 0x7FFF Usually Means Clipping Read More
A stuck-low I²C bus is usually a state or electrical problem, not a missing address. Use SCL/SDA measurements, a nine-clock recovery and staged isolation to find the failing device.
I²C Bus Stuck Low? Diagnose SDA Before Power-Cycling Everything Read More
Measure UART bit width first, then resolve inversion and frame format. This workflow turns a random-byte decode into repeatable evidence.
Recover an Unknown UART Baud Rate with a Logic Analyzer 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
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
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
When robot sensor readings become erratic, measured power-rail behavior can help distinguish an electrical problem from a software problem before any redesign begins.
Robot Sensor Noise Can Start on the Power Rail, Not in the Code Read More
Arduino Core on Zephyr 0.90.0 is officially stable and leaving beta, giving advanced Arduino projects a more serious RTOS path while raising new expectations for classroom documentation and testing.
Arduino Core on Zephyr Leaves Beta, Raising the Stakes for Classroom RTOS Projects Read More
I2C is convenient for robot sensors, but cable length, pull-ups, bus speed and grounding can turn simple modules into intermittent faults. Here is the maker-lab checklist.
I2C Sensor Wiring for Maker Robots: How to Avoid Mystery Dropouts Read More
Arduino’s Core on Zephyr 0.56.0 update gives maker and embedded teams another reason to treat board support, drivers, and repeatable testing as part of the project—not cleanup after the demo.
Arduino Core on Zephyr 0.56.0 Moves Embedded Testing Closer to the Board Read More