gps gnss uart
NMEA 0183 Checksum Validation in C
NMEA checksum errors are silent data corruption in GPS applications. Here's how the checksum works and how to implement validation correctly.
Blog
Register-level explanations, timing gotchas, and field-tested patterns for embedded systems.
hardware pcb design
Wire Gauge and Current Rating: Getting It Right on PCBs and Harnesses
Current ratings in wire tables assume things that aren't true in your enclosure. Here's how to calculate what you actually need.
power hardware pcb
Buck Converter Design for Microcontroller Power Rails
Picking a buck converter IC is the easy part. Choosing the inductor, capacitors, and getting stable operation is where designs fail.
power hardware design
LDO vs Buck Converter: When to Use Each
The decision isn't about efficiency alone. Noise, cost, board space, and load profile all matter. Here's how to make the right call.
firmware protocols crc
Choosing the Right CRC for Your Embedded Protocol
CRC-8, CRC-16, CRC-32 — and a dozen variants of each. Here's how to pick the right one for your protocol and implement it correctly.
passive adc hardware
Voltage Dividers in Embedded Design: Tolerance Matters
Voltage dividers look simple but resistor tolerance, input impedance, and load current interact in ways that burn you at the worst moment.
lora battery nrf52
LoRa Node Battery Life: What Actually Drains Your Battery
Most LoRa nodes last a fraction of their theoretical lifetime. Here's where the current actually goes and how to fix it.
i2c stm32 nrf52
Why Your I2C Bus Hangs: Pull-up Resistor Failures
I2C hangs, NAKs, and corrupted reads usually trace back to pull-up resistors. Here's how to diagnose and fix it systematically.
i2c pullup hardware
I2C Pull-up Resistor Selection: The Complete Guide
Why I2C pull-up resistors matter, how to calculate the valid range, and the most common mistakes that cause intermittent I2C failures on real hardware.
uart stm32 avr
Why Your UART Isn't Working: Baud Rate Errors Explained
The most common cause of UART garbage data is a miscalculated baud rate. Here's exactly what goes wrong, why 2% matters, and how to debug it fast.