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DC Barrel Power Jack Male /Connector (5/5.5/2.1mm)
This is a common female barrel jack connector cable mounting.
2,1mm inner pole
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This is a common female barrel jack connector
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This is a splittable 40 pin dual male jumper wire, it is super flexible, can be transformed from 1-40 pin jumper wire. With some of these, you will no need to worry about the jumper wires you got before do not fit your project, just split it and go.
“An open-source firmware and development kit that helps you to prototype your IOT product within a few Lua script lines” Based on ESP8266 ESP12E wifi board, on-board USB-TTL support directly flashing from USB port, also on-board power circuits and all IOs setup.
Enclosure: multipurpose; X:59mm; Y:84mm; Z:37mm