Is it safe to drive I/O pins of an unpowered AVR ATmega328P?
71535
Does driving an microcontroller's GPIO when it is powered off weaken the chip?
117573
How does one send data through UART from MCU to your PC without any connections on TX/RX pins?
97696
1.35 V RAM in a 1.5 V system - Will it fry or overclock?
125906
Open-drain microcontoller ports
92085
I've pluged e-pci power cable(6+2pin) to eps 8 pin on motherboard
67544
I/O Module with optocouplers
14829
Measure PIC's own VDD-in voltage with ADC
56895
AVR 1.1V Internal ADC Reference Over-Voltage
89981
Can I safely connect the power-only-end of a USB-Y cable to an other power source?
92255
How can I use a 12 V input on a digital Arduino pin?
136316
Can I safely connect a USB 2.0/1.1 internal pin block to a USB3.0 motherboard header?
53682
Is it safe to use a voltage divider for Arduino and DC motor controller?
64390
ATMEGA328P standalone sketch doesn't work as expected
120243
Can I safely use my camera with a external power supply?
152108
What is the minimal set of parts for a circut with this AVR microcontroller?
150614
How to disable a single op-amp in dual packaging?
116213
Can Altera GPIO pins read the input voltage?