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Pico Probe debug port - 3-pin JST SH compatible
or Arduino with Adafruit Arcada library support
768 KHz crystal for clock generation & RTC
Retail: the device can help retailers keep track of stock levels
Using Stem:Bit you will learn programming
MCP23017 - I2C 16 Input/Output Port Expander GPS Antenna Pico Probe debug port -Add another 16 pins to your microcontroller using an MCP23017 port expander. The MCP23017 uses two I2C pins (which can be shared with other I2C devices) to provide 16 general purpose pins. Each pin can be set as input, output, or input with a pullup resistor. Additionally, an interrupt can be generated via an external pin when any of the inputs change, eliminating the need for constant polling. This chip operates with a voltage range of 2. 7 5. 5V,
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