Adding a beeper to the Mini

A forum dedicated to the stock LulzBot Mini 3D Printer
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ztatic
Posts: 17
Joined: Mon Jan 21, 2019 9:10 am

Adding a beeper to the Mini

Post by ztatic » Fri Jan 25, 2019 2:11 pm

I'd like the printer to beep at certain times.

There's an 8-pin header labeled "Analog" on the RAMBo board. Is one of these pins or pairs of pins where the "BUZZER" signal is connected (PE2 on the ATMEGA processor chip)?

Does the M300 cause a PWM from PE2?

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Orias
Aleph Objects | LulzBot
Posts: 1509
Joined: Wed Mar 27, 2013 1:24 pm
Location: US

Re: Adding a beeper to the Mini

Post by Orias » Tue Jan 29, 2019 4:50 pm

We haven't tried adding a beeper in that fashion. Give it a go and see!

Instead, we use the beeper on the Graphical LCD Controller: https://www.lulzbot.com/store/accessori ... controller

ztatic
Posts: 17
Joined: Mon Jan 21, 2019 9:10 am

Re: Adding a beeper to the Mini

Post by ztatic » Thu Jan 31, 2019 4:59 pm

FWIW, this is an old Mini with no display or really any other "normal" local interface stuff.

Can someone identify which flavor of RAMBo is on this old thing? I should then be able to find the right schematic and tell from that whether any processor PWM's are brought out to a header.

zachah
Posts: 65
Joined: Mon Jul 31, 2017 9:20 am

Re: Adding a beeper to the Mini

Post by zachah » Fri Feb 01, 2019 9:28 pm

https://reprap.org/wiki/MiniRambo

You can find the revision of the RAMBo board written on the board itself

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