tag:blogger.com,1999:blog-2228372887329990411.post6150256532740760201..comments2024-03-07T04:36:31.008-08:00Comments on John's Model Making: Auto Adjust FSR End Stop DetectorJohn Socha-Leialohahttp://www.blogger.com/profile/06008871146248095504noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-2228372887329990411.post-75013598159567666012017-07-30T03:29:34.391-07:002017-07-30T03:29:34.391-07:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/16644446773264656618noreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-14985461398692733322017-02-16T09:35:21.283-08:002017-02-16T09:35:21.283-08:00A quick and easy way is to wire up two FSR's i...A quick and easy way is to wire up two FSR's in series and connect to one of the three channel. Should work just fine.<br /><br />Someone also made changes to support 4 channels in software, but actually using this requires some modifications to the board:<br />https://github.com/JohnSL/FSR_Endstop/pull/2Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-63860283861273963802016-02-22T06:42:36.769-08:002016-02-22T06:42:36.769-08:00can i buy this card?can i buy this card?Anonymoushttps://www.blogger.com/profile/14276431293081716630noreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-11355047686653077872015-12-14T20:39:32.293-08:002015-12-14T20:39:32.293-08:00Awesome...you can upload the gerbers to OSHStencil...Awesome...you can upload the gerbers to OSHStencils and get some rather awesome stencils made for cheap as well...Anonymoushttps://www.blogger.com/profile/11925676398236619690noreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-1518236872604796802015-09-01T05:32:36.933-07:002015-09-01T05:32:36.933-07:00John, I've been using the manufactured boards ...John, I've been using the manufactured boards on my deltas (5 of them) and they are great. There is gathering interest in using FSRs on Cartesian printers. I have a Taz and am investigating how best to do this. Ideally, you'd want 3 points of contact (3 FSRs) as that defines a plane, but with a square or rectangular build plate, that leaves 2 corners "overhanging" with quite a lot of area. I have not tried it so this is theoretical but it seems that a touch on one of these corners would trigger 2 FSRs and lift the one opposite - not good. So maybe a 4 FSR setup with one at each corner is needed. Hence my post here! How difficult would it be to prototype a version of this that has inputs for 4 FSRs? <br /><br />cheers,<br />Michael SublimeLayershttps://www.blogger.com/profile/07266175443539080935noreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-41170400142994266392015-04-15T14:24:42.289-07:002015-04-15T14:24:42.289-07:00Hi
I downloaded and installed ATTinyCore as you h...Hi<br /><br />I downloaded and installed ATTinyCore as you have suggested.<br />My arduino-0023 sees me only two Bord available:<br /><br />ATtiny861 @ 1 MHz (internal oscillator; BOD disabled)<br />ATtiny861 @ 18.432 MHz (external oscillator; BOD disabled)<br /><br />Which is correct? 1 MHz?<br /><br />Regard<br />Drake<br /><br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-23864086107225663082014-06-11T00:50:22.716-07:002014-06-11T00:50:22.716-07:00Excellent work and nice write-up!
One point of ca...Excellent work and nice write-up!<br /><br />One point of caution: The bridge rectifier you're using keeps your device's logic ground one voltage drop above the ground of the system you attach the device to. On some devices this could lead to trouble detecting a low level reliably, as the low voltage is rather high. I just checked for my BeBoPr boards: The Schmitt-Trigger inputs have a negative going threshold of at least 1.0 Volt, so I don't expect a problem there. Make sure to verify this if you're using other hardware!<br /><br />It's not completely clear to me how you've made the stencil. If you can't or don't want to do this yourself, have a look here for cheap mylar stencils: http://www.oshstencils.com.<br /><br />-- Bas<br />modmakerhttps://www.blogger.com/profile/02338605313857827906noreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-4956880936099547852014-05-05T15:02:59.211-07:002014-05-05T15:02:59.211-07:00Very nice work!
Any reason you can think of tha...Very nice work! <br /><br />Any reason you can think of that I wouldn't be able to port this code to a Trinket? I would remove the individual LED flashing, of course, and just use the one onboard the Trinket. Just curious.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-32573591439152654832014-05-04T22:00:42.963-07:002014-05-04T22:00:42.963-07:00Awesome, John! I did mine with the ATtiny85 with w...Awesome, John! I did mine with the ATtiny85 with wire wrapping, but I love your PCB design! Wing Tang Wonghttps://www.blogger.com/profile/15588459662357176465noreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-49132496342870763952014-05-04T18:26:51.104-07:002014-05-04T18:26:51.104-07:00Thanks. I have no plans to offer boards myself. Ho...Thanks. I have no plans to offer boards myself. However I'm planning on going to MakerFaire this month, and I'm hoping I might find somewhere while I'm there who is interested in making the boards. I had a hobby business once before and learned my lesson. This is a hobby, and I want to keep it fun.John Socha-Leialohahttps://www.blogger.com/profile/06008871146248095504noreply@blogger.comtag:blogger.com,1999:blog-2228372887329990411.post-67876882295416785802014-05-04T18:01:00.111-07:002014-05-04T18:01:00.111-07:00I hope you offer populated boards for sale at some...I hope you offer populated boards for sale at some point. I'd be interested in them!Haydn Huntleyhttps://www.blogger.com/profile/18416868133560099383noreply@blogger.com