Tapping the 'Tmoney' card to the NFC module displays the remaining balance on the OLED screen, offers the most intuitive way to check the balance on the card.

Some say "no way, take ESP32". Okay, and could help generally debug faulty ESP programs, but this was not the question here because ESP8266 has less and different IO ports, less speed, less memory.

While the cost of a hobby-grade remote control transmitter has dropped significantly over the last decade or so, even the basic models are still relatively expensive. It’s not such a big deal if you ...

The best equipment won’t help you if you don’t have it with you in the moment you need it. Knowledge, experience, and a thick skin may help you out there in the mud of the hardware battlegrounds, but ...