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Check the pin labels on the Force-Sensitive Resistor (FSR) Square and match them to your controller voltage
The output current cap is at 3A
3V power supply and a logic level shifter (or voltage divider) on the TX pin from Arduino to ESP
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which can tell you which direction is down towards the Earth (by measuring gravity) or how fast the board is accelerating in 3D space
ESP-01S 1MB WiFi ESP8266 - Serial Transceiver mq135 Check the pin labels onAdd WiFi to Any Microcontroller via Serial Tiny, Low Cost, Proven The ESP 01S 1MB WiFi Serial Transceiver Module is the simplest way to add WiFi connectivity to an Arduino, STM32, PIC, or any microcontroller with a UART port. Send AT commands over serial and the ESP 01S handles all WiFi networking TCP connections, HTTP requests, UDP, and more without consuming your main MCU's resources. The "S" variant upgrades the original ESP 01 with 1 MB of flash
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