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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@AnnKyun
It gets power from the DK itself, however I routed them over to the header pins so that if you don't have a DK and want to use it just for USB-TTL, the programmer can power it too. To reduce the cost I didn't add in a power switching circuit, so I would not advise connecting to USB-TTL programmer if you have the jig plugged into the DK.
Also SWIO and RST are not mixed up, this design is meant for the pogo pins to point 'upward' from the DK and the Puck is meant to be placed face down on the DK. Let me know if you would like any adjustments :D