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GaudiLabs / OpenDrop

Open Source Digital Microfluidics Bio Lab
GNU General Public License v3.0
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BOM issues #11

Closed biomurph closed 6 years ago

biomurph commented 6 years ago

I'm preparing to populate the boards I got based on the 3.1 design and I found a couple of issues.

The joystick that you spec for JS1 SKQUDBE010 has gone EOL. I am substituting JS5208 which has the same pinout (if you rotate it 180 degrees) but I will have to bend the leads and cut off the bottom tabs. Should not be too big a deal.

J3 calls for a micro USB connector, but your footprint is of a USB C connector. I was able to track down the part on Digikey Amphenol 12401610E4#2A

J1 calls for 2x3 pin header with 2.54mm pitch, but the footprint is for 2x5 pin header with 1.27mm pitch

hearoplane commented 6 years ago

Hi Joel

You should be fine replacing the SMD joystick with a SKQUSeries Mouser part nr. 1435776 https://www.mouser.com/ProductDetail/?qs=6EGMNY9ZYDQQG43X8RE8sg%3d%3d

Here is my updated part list. https://docs.google.com/spreadsheets/d/150btwpEoipYg64Zjft_8tvhFb-Eue1nxsyn49RaaitU/edit?usp=sharing

Dominik

On Wed, Jun 6, 2018 at 7:34 AM, Joel Murphy notifications@github.com wrote:

I'm preparing to populate the boards I got based on the 3.1 design and I found a couple of issues.

The joystick that you spec for JS1 SKQUDBE010 has gone EOL. I am substituting JS5208 which has the same pinout (if you rotate it 180 degrees) but I will have to bend the leads and cut off the bottom tabs. Should not be too big a deal.

J3 calls for a micro USB connector, but your footprint is of a USB C connector. I was able to track down the part on Digikey Amphenol 12401610E4#2A

J1 calls for 2x3 pin header with 2.54mm pitch, but the footprint is for 2x5 pin header with 1.27mm pitch

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

biomurph commented 6 years ago

Thanks Dominik,

According to the schematic, the pinout for the joystick part you reference is incorrect for the current footprint.

Shem has 1 A 2 B 3 C 4 Common 5 D 6 Center

Part 1435776 has 1 A 2 Center 3 C 4 B 5 Common 6 D

I was not able to open your spreadsheet. Waiting for permission. Do you have the part number for the speaker? It is not listed in the BOM.

biomurph commented 6 years ago

@hearoplane I just got into your BOM, and it is the BOM for V21. I am working on V31

biomurph commented 6 years ago

Oh, it looks like the 'speaker' is just a piezo buzzer. I think I have something in my lab that will work if that's the case.

GaudiLabs commented 6 years ago

Hi

The Version 3 is still work in progress, so not everything allways up to date. I have a more recent BOM with the speaker and stuff. Will push tomottow. I have also been thinking replacing the joystick as it is end of production. Also I have more software I am working on. Then the Open Hardware Certificate Number is not the correct one. So please bear with me and dont re-share like this :)

Urs

On 6 June 2018 19:11:10 CEST, Joel Murphy notifications@github.com wrote:

Oh, it looks like the 'speaker' is just a piezo buzzer. I think I have something in my lab that will work if that's the case.

-- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/GaudiLabs/OpenDrop/issues/11#issuecomment-395144406

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GaudiLabs commented 6 years ago

Refer to Bill of Materials for Version 3.1