/AI22h ago

Hokkaido Farmer Uses OpenAI Codex to Automate 100-Hectare Broccoli Farm

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Original post
jason@jxnlco#931inAI

wow its @tomiyasu16

10:18 AM · Jun 5, 2026 · 16.2K Views
Sentiment

Many users praised the Hokkaido farmer's use of ChatGPT and Codex to automate his 100-hectare broccoli farm as cool and useful for boosting productivity through real-world AI applications.

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95.8%
Neg
4.2%
30 comments with sentiment.
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VIEWS132.6KBOOKMARKS300LIKES1.2KRETWEETS145REPLIES47
ChatGPT@ChatGPTapp

Meet Hiroki-san (@tomiyasu16) who is running his farm in Japan with ChatGPT and Codex: https://chatgptpro.substack.com/p/hiroki-tomiyasu

20hViews 132.6KLikes 1.2KBookmarks 300
Yasi@Yasamanini

@ChatGPTapp @tomiyasu16 he'll soon get addicted to Codex slop and lose that bald farm. 4o was better.

20hViews 108Likes 7

@ChatGPTapp @tomiyasu16 给我的启发: 利用GPT和Codex给孩子整一个homelab

AI加速学习前沿 Lab提供实践

13hViews 66Likes 2
Ole Lehmann@itsolelehmann

@jxnlco @tomiyasu16 what a legend!

22hViews 1.5KLikes 3
NOY@pizzeriagorlami

@ChatGPTapp @tomiyasu16 @grok what's his github ?

18hViews 54
Susan STEM@feltanimalworld

@reyjudge @ChatGPTapp @tomiyasu16 多年以后你会发现这个homelab回报率是大学的10倍不止。

13hViews 33
Grok@grok

**pizzeriagorlami** Hiroki Tomiyasu (tomiyasu16) GitHub is **http://github.com/tomiyasu0428**. He uses it for GitHub Pages + Actions (e.g. satellite data automation) and shares various AI side projects there.

His specific farm tools (ESP32 greenhouse LINE bot, etc.) aren't public repos yet — he documents everything step-by-step on **http://note.com/tomiyasu16** instead. He also references open-source stuff like AgOpenGPS.

Classic non-engineer builder vibe.

18hViews 11
Cyber Monday@CyberMonday

@ChatGPTapp @tomiyasu16 codex farming in hokkaido is the most wholesome use case

19hViews 109Likes 2
Augusto 🥷⚛️@AugustoBrassa

@tomiyasu16 @jxnlco 友よ、君がAIを使って農場を作るのを手伝うために、30万日本円を集めたんだ。やばいよね!

15hViews 42Likes 2
Dev K@DesiRichDev

@ChatGPTapp @tomiyasu16 he did not learn to code. he learned to build.

those are not the same thing anymore.

19hViews 368
netrunner@netrunner_btc

@ChatGPTapp @tomiyasu16 i still babysit Codex on npm scripts, Hiroki-san has it near greenhouse vents

20hViews 79Likes 1
Sunny@QS6868

@ChatGPTapp @tomiyasu16 What a real life example that turns AI into true production power! Especially it is combined with the traditional industry.

20hViews 61Likes 1
Vision@bettervision7

@tomiyasu16 @jxnlco hey bro, take a look at @bankrbot @igoryuzo you can hit him up, he is the dev and he will help you! the community loved your project and we raising funds for you.

15hViews 15Likes 2
Claude@CrodleMon

@ChatGPTapp @tomiyasu16 So awesome seeing real world applications to AI, and how useful it can be

20hViews 46Likes 1
Vector@PrasVector

@ChatGPTapp @tomiyasu16 That's pretty cool. Love seeing people use AI for practical stuff like farming instead of just making memes.

20hViews 44Likes 1
kuma 18@xiao18kuma

@ChatGPTapp @tomiyasu16 This is the kind of AI story that feels properly grounded.

16hViews 43Likes 1
𝕾𝖑y ⏳@sly_d_s3c0nd

@ChatGPTapp @tomiyasu16 His technique?

20hViews 32Likes 1
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