Reassemble the contents of the electronics box

[JackiePease]

Some of the electronics came apart when we disassembled the Knitic. There were also some wires that looks as though they had slightly overheated (we have always had issues with the fan). huffeec has taken the electronics box and contents home with the aim of getting a understanding of the best configuration, and getting it all working again.

[huffeec]

Plan is to replace wires and get it back to working as it was, hopefully by or at the next maker night. If anyone's got more time and wants to look at #3 at the same time I'd happily pass the bits over..

[ajlennon]

I'd quite fancy trying to help out with #3 guys...

[JackiePease]

That would be great – perhaps see how huffeec has got on by Thurs? From: Alex Lennonmailto:notifications@github.com Sent: 05 February 2017 18:32 To: DoESLiverpool/circular_kniticmailto:circular_knitic@noreply.github.com Cc: Jackie Peasemailto:jackiepease@hotmail.com; Authormailto:author@noreply.github.com Subject: Re: [DoESLiverpool/circular_knitic] Reassemble the contents of the electronics box (#1)

I'd quite fancy trying to help out with #3https://github.com/DoESLiverpool/circular_knitic/issues/3 guys...

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[huffeec]

That'd be great @ajlennon I'm not likely to be in the workshop before Thursday now but can drop off the bits before then if you want to have a look.

It's based on this at the moment,https://github.com/DoESLiverpool/circular_knitic/blob/master/Arduino/CKcircuitSchema_pcb.jpg with an old PC PSU.

The motor is a NEMA 23

[amcewen]

I've done some work on this, and completely rewritten the code for it. The electronics are now next to the Knitic, and mostly wired up - it's missing the switch and the fan, but if you give it the 5V and 12V supplies then it'll run, and there's a new multi-turn potentiometer to allow finer-grained control.

The new code keeps track of how many steps it has triggered in gStepCount and prints out its RPM every five minutes to the serial port. I think the calculated RPM might be double the RPM it's actually achieved, but haven't checked properly. (Which is probably because the code thinks the Big Easy Driver is in 8-microstep mode, but it defaults to 16-microstep mode. We can check that and update kStepsPerRevolution accordingly).

I've moved the circuit documentation to Fritzing. It could do with the schematic tidying up (I've focused on the breadboard view so far) and the schematic and breadboard view exporting to images stored in the repo (to save anyone building one from installing Fritzing just to see how things are wired)

[huffeec]

I've updated the code and circuit to include an LCD screen and controls for the row counter #3 This commit also has changes to the box of electronics svg to make space for the screen. The code is just 'Hello, Knitic' , and needs a line to convert between motor rotations and rows. (Anyone know what the gear ratio is?) dc1577902f17f0af19d053fcbce11e4b85cfec19

After maker day today I'm looking for a replacement 16x2 screen....

So, I've put the electronics box together without a screen and fixed the motor back. With progress on #5 the Knitic is now almost functional again. It needs the switch between pin2 and gnd, and the big easy board needs trimming.

[huffeec]

The box was reassembled (without the screen) for Maker Faire. It doesn't need any work, except if there is anything relating to #7 to be working for Make Fest.

[paulgeering]

While swapping the PSU on Saturday (#7) I deactivated the arduino. (#13) This will be remedied Tomorrow.

[paulgeering]

The electronics are now ready for Makefest Liverpool 2017. This will be the same setup as Newcastle (I.e. not using the screen and row counter)

7 PSU tested and working

13 Arduino replaced and tested.