Julet M6 e-bike connectors replace dangling Dupont jumper wires for UART TTL serial access on routers, Raspberry Pis, and embedded devices.
Key Takeaways
Dupont breadboard wires on exposed UART pins break under repeated bending and back-feed current through RX/GND even when USB is disconnected.
Julet M6 3-pin connectors are IP68, rated 3A/24V, available as pre-tinned 20cm pigtails on AliExpress, and assemble in minutes with basic crimping tools.
Author convention: female Julet on device-end, male on USB-TTL adapter; GND on a separate 1-pin Dupont header to allow easy RX/TX swap without disassembly.
5-pin and 6-pin Julet sockets accept the 3-pin plug, enabling backward-compatible expansion for additional passive-wire functions.
Voltage differentiation proposed by connector size: M6 for 3.3V, M8 for 5V; 1.8V/2.5V logic (found on some OpenWrt routers) would use HiGo Micro Q connectors.
Hacker News Comment Review
The single comment questions size, preferring smaller 3-pin magnetic connectors from AliExpress as an alternative to Julet M6.
Notable Comments
@notthetup: argues Julet M6 is too large and points to magnetic 3-pin AliExpress connectors as a more compact option.
