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What holds the sensors and LED-s in place? #98

Open Akustav opened 2 years ago

Akustav commented 2 years ago

Currently nothing holds these components in place:

image image

mbz4 commented 2 years ago

They are held there by sheer will.

mbz4 commented 2 years ago

Added retention feature bracket.

Akustav commented 2 years ago

Currently the sensors can wobble in the retention clip due to excess space:

image

With LEDs it seems to be less of a problem because legs will be bent through the hole. This brings another issue, wont pins short themselves? Is there space for heatshrink or similar?

mbz4 commented 2 years ago

fixed

Akustav commented 2 years ago

The isolation question still remains? How is it planned to isolate the 4/2 legs of the components properly?

mbz4 commented 2 years ago

there is space for heatshrink there in addition to room for bending them each in their own direction

Akustav commented 2 years ago

Heatshring itself has a wall thickness of around 0.3mm. If you do the minimum and shield 2 wires + some bending, it adds 0.6mm * 2 to the pins. Pins themselves are around 0.45 mm thick. The pin pitch on the sensor is 1.27mm, so in total the width of wires is at least 6.28mm wide and 1mm high. The design has space for 5 mm x 1.5mm

mbz4 commented 2 years ago

that's fine because the phototransistor does not need to stay flush on the face of the wall adapter

Akustav commented 2 years ago

I think the space issue can simply be resolved by adding some chamfers:

image