<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Hacker News: krogenx</title><link>https://news.ycombinator.com/user?id=krogenx</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Fri, 03 Jul 2026 08:12:46 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=krogenx" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[Show HN: Manger – Livestock Management App]]></title><description><![CDATA[
<p>Hi HN,<p>My name is Matt and I've been working on a project called Manger, a mobile app used for livestock management. As a child, I grew up in a rural area with chickens, cows and other livestock around me. At the same time, I've always been passionate about technology. About a year ago, I launched Manger on iOS, and, more recently on Android. Just this past week, I launched RFID tags for poultry, called "eFlock Smart Poultry Tags" along with a companion scanner. The "killer feature" of the app is long-range scanning support (up to 15 feet), which can be used to count and identify animals. I imagine it has some other "current" uses, for example, finding young chickens that have been spooked and hiding in grass.<p>The app is written with React Native and uses PouchDB, backed by SQLite. What makes this really neat is that you can sync your data across devices via a (local!) CouchDB server. At my homestead, my wife typically takes care of chickens and records how many eggs we've collected each day. On the other hand, I take care of rabbits and record their weight, as we keep them for meat. All of the data syncs between our iPhones. I currently have a Raspberry Pi setup running CouchDB and it has been working well. The goal for the app is to always be offline-first, with sync and backup functionality backed by on-premises hardware. This is a "beta" feature, as it's currently undocumented and I don't sell the hardware for that (yet).<p>The eFlock Smart Poultry Tags are passive UHF. It took me quite a bit of time to find a chip / antenna combination that has "long rage", while being "small". It's a trade off. The tags are 45.5mm x 19.5mm x 1mm and are perfectly fine for adult chickens. I think they are fine on young chickens as well - about 8 weeks when they become fully feathered. Tags are 3D-printed with TPU, which makes them flexible and durable. At the time of this writing, nine months into my test on 32 chickens, only one so far has been damaged.<p>The scanner, eScan H103 SE, is sourced from a manufacturer in China. Similar situation as with the tags, it took me quite a while to find something that is "long range" while staying relatively affordable. Depending on make / model, livestock scanners (LF/HF) range from a few hundred to upwards of a thousand dollars, so the scanner is definitely on the cheaper end of this spectrum.<p>My next upcoming feature are functions for number-type properties. For example, get the totals, average, maximum or minimum number of eggs collected within some specific time frame. Along those same lines, (local!) AI integration where you can simply ask "how many eggs did I collect last week?".<p>I have quite a few exciting long-term plans as well.<p>Here's a video of the scanning feature:
<a href="https://youtu.be/wilixJiyPYA?si=_ptwYF0U05ViFCk2" rel="nofollow">https://youtu.be/wilixJiyPYA?si=_ptwYF0U05ViFCk2</a><p>All feedback is super welcome and I would be happy to answer any questions! :)</p>
<hr>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=48351776">https://news.ycombinator.com/item?id=48351776</a></p>
<p>Points: 3</p>
<p># Comments: 0</p>
]]></description><pubDate>Mon, 01 Jun 2026 01:49:58 +0000</pubDate><link>https://www.manger.app/</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=48351776</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48351776</guid></item><item><title><![CDATA[New comment by krogenx in "Ask HN: What are you working on? (May 2026)"]]></title><description><![CDATA[
<p>I am in the process of launching my poultry RFID tags, “eFlock Smart Poultry Tags”. They allow farmers to count and identify all of the birds that they have. The project goes along with a mobile app, Manger, a tool that can be used to gather data about livestock (not just poultry). Tags should be available sometime this week, perhaps early next week on Amazon. Here’s a video of scanning:
<a href="https://youtu.be/wilixJiyPYA" rel="nofollow">https://youtu.be/wilixJiyPYA</a>
Tags on Amazon:
<a href="https://www.amazon.com/dp/B0GWTB1DR9" rel="nofollow">https://www.amazon.com/dp/B0GWTB1DR9</a>
Manger app:
<a href="https://www.manger.app/" rel="nofollow">https://www.manger.app/</a></p>
]]></description><pubDate>Mon, 11 May 2026 11:12:34 +0000</pubDate><link>https://news.ycombinator.com/item?id=48093499</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=48093499</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=48093499</guid></item><item><title><![CDATA[New comment by krogenx in "Arm AGI CPU"]]></title><description><![CDATA[
<p>Pretty sure in that case AG stands for Athletic Greens.<p>I think the name change also came before the AI hype.</p>
]]></description><pubDate>Tue, 24 Mar 2026 20:48:53 +0000</pubDate><link>https://news.ycombinator.com/item?id=47509026</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=47509026</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47509026</guid></item><item><title><![CDATA[New comment by krogenx in "25 Years of Eggs"]]></title><description><![CDATA[
<p>A bit of a shill comment but… I have chickens and have been tracking egg production in an app that I’ve built, a livestock manager of sorts called Manger.<p>Looking at my data, since we’ve had our first egg 743 days ago, our hens have produced 9,393 eggs, or an average of just above a dozen a day.<p>The app can also count chickens, since each chicken has a UHF RFID.<p><a href="https://m.youtube.com/watch?v=_iGn_pZ3IkY" rel="nofollow">https://m.youtube.com/watch?v=_iGn_pZ3IkY</a></p>
]]></description><pubDate>Mon, 23 Mar 2026 01:00:27 +0000</pubDate><link>https://news.ycombinator.com/item?id=47484189</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=47484189</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=47484189</guid></item><item><title><![CDATA[New comment by krogenx in "No, it's not a battleship"]]></title><description><![CDATA[
<p>Big “beautiful” bill comes to mind.</p>
]]></description><pubDate>Sun, 28 Dec 2025 20:41:27 +0000</pubDate><link>https://news.ycombinator.com/item?id=46414283</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=46414283</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46414283</guid></item><item><title><![CDATA[New comment by krogenx in "RuBee"]]></title><description><![CDATA[
<p>Are there any places where a hobbyist could purchase a tag or reader?</p>
]]></description><pubDate>Mon, 24 Nov 2025 14:27:17 +0000</pubDate><link>https://news.ycombinator.com/item?id=46034483</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=46034483</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=46034483</guid></item><item><title><![CDATA[New comment by krogenx in "A love letter to the CSV format (2024)"]]></title><description><![CDATA[
<p>If a workstation has Git installed on it, which I’d think would be the case for substantial number of engineers out there (…not just software engineers), grep is there due to Git BASH.</p>
]]></description><pubDate>Fri, 12 Sep 2025 12:49:53 +0000</pubDate><link>https://news.ycombinator.com/item?id=45221553</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=45221553</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=45221553</guid></item><item><title><![CDATA[New comment by krogenx in "In 2006, Hitachi developed a 0.15mm-sized RFID chip"]]></title><description><![CDATA[
<p>I haven’t played with any stationary antennas but I think it’s possible.<p>The scanner that is used in the video has configuration for transmit power. At its maximum setting, the range is 15 feet with clear line of sight.<p>Tags with larger antennas, generally speaking, have longer range but might be too big for younger chickens.<p>So overall there are a lot of variables.</p>
]]></description><pubDate>Wed, 20 Aug 2025 14:40:28 +0000</pubDate><link>https://news.ycombinator.com/item?id=44962399</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=44962399</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44962399</guid></item><item><title><![CDATA[New comment by krogenx in "In 2006, Hitachi developed a 0.15mm-sized RFID chip"]]></title><description><![CDATA[
<p>These:<p><a href="https://www.chafon.com/productinfo/1070742.html" rel="nofollow">https://www.chafon.com/productinfo/1070742.html</a><p>Bought them on Alibaba.</p>
]]></description><pubDate>Tue, 19 Aug 2025 17:41:09 +0000</pubDate><link>https://news.ycombinator.com/item?id=44954151</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=44954151</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44954151</guid></item><item><title><![CDATA[New comment by krogenx in "In 2006, Hitachi developed a 0.15mm-sized RFID chip"]]></title><description><![CDATA[
<p>I have a hobby project where I am using UHF tags for counting poultry. The advantage that it gives me is long range (few meters) compared to LF / HF tags. QR code also wouldn't work due to size and distance.<p>Here's a video.<p><a href="https://youtu.be/_iGn_pZ3IkY" rel="nofollow">https://youtu.be/_iGn_pZ3IkY</a></p>
]]></description><pubDate>Tue, 19 Aug 2025 13:26:00 +0000</pubDate><link>https://news.ycombinator.com/item?id=44951253</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=44951253</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44951253</guid></item><item><title><![CDATA[New comment by krogenx in "Starbucks in Korea asks customers to stop bringing in printers/desktop computers"]]></title><description><![CDATA[
<p>Maybe they could do some R&D to see if coffee could be used as ink.</p>
]]></description><pubDate>Tue, 12 Aug 2025 07:09:20 +0000</pubDate><link>https://news.ycombinator.com/item?id=44873279</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=44873279</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44873279</guid></item><item><title><![CDATA[New comment by krogenx in "Rollercoaster Tycoon (Or, MicroProse's Last Hurrah)"]]></title><description><![CDATA[
<p>Similar things come to my mind with The Sims. Once the game was “over” (maybe you’ve reached the top job) you could still do all sorts of things… Some of them a bit masochistic.</p>
]]></description><pubDate>Fri, 01 Aug 2025 17:14:26 +0000</pubDate><link>https://news.ycombinator.com/item?id=44759581</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=44759581</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44759581</guid></item><item><title><![CDATA[New comment by krogenx in "Ask HN: What are you working on? (July 2025)"]]></title><description><![CDATA[
<p>I’ve been working on an animal management app for the last two years or so. It’s a hobby project so it’s not going very fast. Recently I’ve released a new version with support for one model of a UHF RFID reader. It allows me to count and identify my chickens from up to 15 feet away.<p><a href="https://youtu.be/_iGn_pZ3IkY?si=x4ijZdAP-suhuJ7Y" rel="nofollow">https://youtu.be/_iGn_pZ3IkY?si=x4ijZdAP-suhuJ7Y</a><p><a href="https://apps.apple.com/us/app/manger-animal-manager/id6742692448">https://apps.apple.com/us/app/manger-animal-manager/id674269...</a></p>
]]></description><pubDate>Mon, 28 Jul 2025 01:08:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=44706218</link><dc:creator>krogenx</dc:creator><comments>https://news.ycombinator.com/item?id=44706218</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=44706218</guid></item></channel></rss>