Engineering-first robotics, AI, maker hardware, STEM, and creator technology reporting
AS5600 angle problems often start with magnet geometry, not software noise: check detection, too-weak and too-strong status before filtering 12-bit readings.
AS5600 Angle Jumps? Check Magnet Status Before Filtering the Data Read More
ADXL345 tap detection uses scaled threshold, duration, latency and window registers plus axis enables and interrupt mapping; raw register values are not g or milliseconds.
ADXL345 Tap Detection: Convert Threshold and Timing Registers First Read More
The TSL2591 can span very dim to bright scenes, but gain and 100–600 ms integration time determine whether its full-spectrum or infrared channel saturates.
TSL2591 Saturation: Lower Gain Before Trusting the Lux Reading Read More
The MAX17048 estimates single-cell Li-ion state of charge from cell voltage with ModelGauge, exposing voltage, percentage and a programmable active-low alert over I²C.
MAX17048 Fuel Gauge: Read State of Charge Without a Sense Resistor Read More
The DS3502 gives firmware 128 steps across a 10 kΩ potentiometer, but the wiper remains an analog node with voltage, loading and startup-state limits.
DS3502 Digital Potentiometer: Treat the Wiper as an Analog Node Read More
The MCP4725 uses VDD as its reference, so DAC code, supply quality and EEPROM writes all affect the voltage that returns after power cycling.
MCP4725 Output Voltage: Calculate the DAC Code Before Writing EEPROM Read More
The I2C address plan supports 64 solenoid outputs, but coil current, MOSFET loss, wiring and release timing still set the practical limit.
Adafruit’s 8-Channel Solenoid Driver: Budget Power Before 64 Outputs Read More
PCF8574 pins have no direction register. A pin becomes usable as an input when its output latch holds 1, and a port read also clears its interrupt condition.
PCF8574 Inputs: Write High First, Then Read the Port Read More
MCP23017 interrupt service is mostly a register-order problem: find the flagged pin in INTF before reading INTCAP or GPIO clears the condition.
MCP23017 Interrupts: Read INTF Before INTCAP Clears the Event Read More
A TCA9548A does not renumber identical I²C sensors. Its control byte connects selected downstream branches, and reset returns every channel to off.
TCA9548A Channel Selection: One Control Byte Is the Difference Between Sensors Read More