Unexpected Maker's SQUiXL is a battery-powered ESP32-S3 WiFi and Bluetooth IoT controller and development platform with a ...

In 2025 we are spoiled for choice when it comes to displays, with affordable LCDs, OLEDs, TFTs, and e-ink panels of all sizes only a few clicks away. But in decades past, such exotica were not on ...

4 and 19 pins are used to adjust the display contrast through a resistor. I use a 1 Mega Ohm variable resistor. Acceptable contrast ~270kOm.

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