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dc42 / OrmerodSensorBoard

Z-height sensor board add-on for RepRapPro Ormerod 3D printer
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v1.3 hardware is out but schematics are missing here. #2

Closed lf- closed 5 years ago

lf- commented 7 years ago

Spool3D says that they have "v1.3" boards, but I only see v1.2 here if the commit history is to be believed.

Also, the link to the schematic PNG in this blog post is broken.

dc42 commented 7 years ago

The schematic for version 1.3 is the same as for version 1.2. Only the PCB layout is different.

amrithmmh commented 6 years ago

thanks for making the circuit Is this possible to use it with glass (stuck with 3M blue tape on top) ?

lf- commented 6 years ago

Consider reading the blog post detailing the project here which states supported surface types.

On Mon, Apr 23, 2018 at 11:12 PM, ENigma notifications@github.com wrote:

thanks for making the circuit Is this possible to use it with glass (stuck with 3M blue tape on top) ?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/dc42/OrmerodSensorBoard/issues/2#issuecomment-383805432, or mute the thread https://github.com/notifications/unsubscribe-auth/AGWDqHhmMG--_NqAFqD2Vbe3nV0z1bZoks5trrRXgaJpZM4QJueX .

amrithmmh commented 6 years ago

so anything with nonreflective surface should work fine (for me blue tape on glass, which makes it non reflective)

Deneteus commented 5 years ago

Why were changes needed for the PCB layout between 1.2 and 1.3 if the schematic was the same?

dc42 commented 5 years ago

To make manufacturing easier.

Deneteus commented 5 years ago

Is there any reason it cannot be made smaller? Say doing the same design but with edge mounted SMD sensors?

dc42 commented 5 years ago

The width could be slightly smaller, it is limited by the spacing needed between the phototransistor and the outer IR diode. The height could be reduced by using a attiny44a MCU in a flat pack package instead of attiny25 and smaller connectors and programming pads, or perhaps a single 6-way connector for both. We intended to switch to a JST 1.5mm connector but we had push back from one of our OEM customers.