So that’s good!
I got a good portion of the backlog moved when I got the batch of PCBs in, and PCB production is going fine. I’m waiting on LCDs though. More about that in a minute.
I noticed we silently broke through the 200th Polargraph mark last month: Since September 2011 you’ve helped me move parts for over 200 drawing machines. I think that’s remarkable, and for that, I salute you, drawing warriors!
In particular I would like to thank all the folks who have contributed to the forum, or written elsewhere and brought more people to the community. You know who you are.
This is probably the first time I’ve been involved with something that wasn’t already happening anyway, and it’s very gratifying indeed. (Also mildly terrifying.)
So, now, back to our scheduled apology:
I know it’s pathetic to be waiting on parts (it’s not like it’s a surprise requirement), but I was surprised to find that the last handful of LCDs I had in stock were all cracked. Still work, but not really usable for paying customers, what.
I’ve got a mega big batch of LCDs arriving soon, and they have been arriving soon, since I ordered them a fortnight ago. I’m just going to have a whinge, so I apologise in advance – everybody else I know has already heard this whinge more than once, so it comes to you, kind, gentle, compassionate reader. Long lead times is fine, and short lead times is great. Reliable lead times is best. The previous batch of LCDs I ordered astonished me by arriving 5 days later, from the other side of the world. Amazing! So, after ordering this next batch two weeks ago, I was expecting it to be here by now, but in fact I only got a tracking message about it yesterday, saying it was in Hong Kong. Oh: less amazing. The good news is that it means it’ll be here some time next week, the actual delivery is air freight, so super fast.
I’m only really exposing this whinge to indicate that I share your pain and to wave a pathetic little white flag. It’s dead frustrating to have ordered something, and then not to have it a month later, when you were quoted a month as lead-time. I’m sorry about that. What I would like to impress on you is that I take this very personally, and take the necessity to provide a good service for your hard cash very personally, and in cases like this, I really feel I’m _not_ giving good service. It’s disappointing, and disheartening, and makes me sad and anxious.
I’m not blaming my suppliers of course, I’m sure they have their reasons for the delay, and assume they are just as invested in keeping me happy as I am in keeping you happy. The solution for me is unsurprising, and more frustrating because of that – just add a healthy margin of error onto expected shipping dates. That’s what I’ll do in future, again.
I’ve discovered that achieving consistency in a service is a much harder thing than achieving consistency with a pen, on a page. That’s something that I have a much clearer understanding of now, but it is surprising to me that having an understanding of the problems is only a very small part of providing solutions to those problems.
In other news, I have a big pile of _everything else_ sitting around, looking forlorn. That is what passes for good news at this juncture.
Well these took a long time, but here they are now. I’ve gone into soldering overdrive.
Thanks for being patient!
After a long wait, Polargraph machine are finally available for sale again!
I am pleased with the last batch of Polarshields I had made, so I’m waiting for a Big Batch coming in the next week or so, and I already have all the other stuff I think. But in the meantime, I am taking orders – I find having the anxiety of holding onto peoples cash focusses the mind wonderfully.
Ha, so the good news is that I got the fixed v1.5 Polarshields back, and so far they are looking good.
Not properly tested the motors yet, but so far, so good.
I’m going to be away for a week though so I am not going to have much time to work on this. One of the things I’ll being doing next Sunday is showing a different project at a Hack Circus event in London.
Linear Clock is like a circular clock, but unrolled. It’s a project from a while ago that I recently revived, and I’ll be doing a show and tell.
That’s Sunday, 6th of October, between 2 in the afternoon and 6 o’clock in the evening. It’s in the back bar of the Star of Kings pub, Kings Cross, London. Tickets can only be bought ahead of time at this site, and I think it’ll be a lot of funny, as well as jolly interesting.
Please come along and see what happens, if you like technology, speculation, funny things, theremins, the phenomenal Sarah Angliss, or chat with brainy folks. It will be lovely to meet you.
So I was excited to get the sample for the “final” version of the polarshield v1.5 through today, very nice… Except I noticed it only had traces on one side of the board! No traces on the bottom!
To have a board made, I produce a bunch of files, each one containing information about one layer of the board – silkscreen printing, soldermask, copper traces, cutting outline, drill holes etc – and zip them up (they’re also on github). I raced to check the files I had sent, and – crestfallen – spotted that I’d somehow managed to miss the bottom copper files.
Infuriating! The wasted money stings a bit, but the main penalty is that production is knocked back another two weeks, and it’s already been too long. I’m getting anxious, and making stupid mistakes like that really doesn’t help.
Well that’s a nice surprise – the new v1.4 boards work! I shouldn’t be surprised I guess, since they are just the 1.3 boards with less stuff on, but it’s always nice when something just works.
I had a thought when soldering this up though: Because the pins for motor A protrude through the board, they need to be filed down and insulated so that they don’t short against the housing of the USB-B connector on the arduino underneath (a blog about it). This is a pain, and in principle (if not in practice), makes for a weaker connection. This has never been a problem for building the full kit, because the arduino mega I use has a mini-USB connector, but for everyone else (and all the vitamin kit parts), it’s a glaring issue.
So I think I will swap motor A with motor C, so that by default, for polargraph, that filing doesn’t need to be done. Will still be wise to put a bit of electrical tape on it because it could still contact, given the right pressure.
Motor C was added because I had the space, and also because I have a few plans for things that might like to have a third axis of control. The parts for motor C will be unpopulated by default, for Polargraph products anyway.
So, I think I’m immediately going to revise this to swap A and C, but also I might try to move the servo and endstop pins, and add some more lights. I’ve got all these LEDs to use up!
Another fortnight for v1.5.
The building where I have my studio has a exhibition of work on all through August, so I’m in it too. I’ve got a cabinet of jewellery and a polargraph drawing! Why don’t you come and see it?
My photograph is dismal, the reality is better. I might have some live drawing at some point, but I failed to move fast enough (and ran out of parts) to get it sorted out for the launch.
I’ll be at the preview tonight, Friday 2nd of August at Arts Complex, St Margaret’s House, 151 London Road Edinburgh EH7 6AE, but the show runs all month, and there’s three massive galleries of stuff across a range of budgets, so call in. My stuff is in Gallery 3.
If you want to come down, drop me a line and I can come and meet you! And show you some other stuff if you want to see it. Or not, if you don’t want to, that’s fine too.
So there are no more 2.2 inch panels left in the world! I have a couple of 2.4s, and a little fix for the firmware to get it working with that resolution panel. I have just found a new source of 2.2 inch panels! But no cases to fit the new panel PCBs.
Orders for full kits are suspended until I get the new boards through and can work up a case, and vitamin kits have that caveat attached.
I will be working up a new design for v1.4 of the Polarshield shortly, stay tuned.
The 2.2 inch screen that I use for the Polarshield is now unavailable, so I’m switching to the 2.4 inch screen instead. Not much difference, but it does mean the PCB needs to be revisited so that it fits in the same footprint. I only have a couple of the 2.2 inch panels left.
The 2.4 inch screen has a higher resolution, so in principle it can fit more stuff on. But in practice, I will keep the two designs aligned for as long as possible.
So I am planning to remove the XBee socket, and the hardware that goes with it. I don’t think anybody uses it, and I’ll leave some pins open so that I can wire it up again in the future.
I would quite like to have space for a third stepper driver, for doing some like this lissograph drawing machine which I covet deeply. If that happened it would be a mostly unpopulated blank, cos it’s a pretty niche idea. It’s also true that a machine like that could easily fit into an arduino uno sized board, and there’s already plenty of multi-stepper shields out there to choose from.
Apart from that, I’m blank. Does anybody have any feelings about the direction of the cables, locations of the sockets, or the types of connectors, things like that? Drop me an email (sandy dot noble at gmail), or go on the forum.