Category Archives: Martial Arts

Topics that are related to sports or martial arts.

IoT Contest Conclusion

Part 1 Part 2 I am delighted to present my final submission for the IoT contest. Throughout this journey, I have worked diligently to develop a reaction trainer prototype rivalling existing commercial solutions such as Blaze Pods. By leveraging the capabilities of the CH32V208W microcontroller, I have designed a custom PCB that incorporates a calibrated […]

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IoT Contest: Reaction Trainer Design

See Part 1 for the Contest Overview See Part 3 for the Final Submission As always you find the design files on my GitHub. Designing a sensor that meets the specific requirements of a particular application involves overcoming several hardware challenges. From creating a Printed Circuit Board (PCB) using Computer-Aided Engineering (CAE) software to carefully […]

Posted in Contest, Embedded, Martial Arts, RISCV, RT-Thread, WCH | 1 Comment

IoT Contest – Next-Generation Reaction Trainer using RISCV and RT-Thead

See Part 2 for the Hardware Design See Part 3 for the Final Submission I have been following Nanjing Qinheng Microelectronics (WCH) for a while. They have a very interesting line-up of low-cost RISCV microcontrollers with a lot of different connectivity options that rival big shots like ST or NXP. A couple of weeks ago […]

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Fixing a built-in Oven and Plyometrics

I was down with an ankle injury that kept me out of the Dojo for a bit. Somewhat obsessed with recovery while I couldn’t do much physically, I used the time to read myself into recovery and training theory and discovered plyometrics – a type of exercise that involves explosive movements like jumps, hops, and […]

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Retooling for 2023

A new year has begun. After an extended hiatus in Japan to visit friends and family (pictured here), I am back in the saddle and plan to respin this blog a bit. In hindsight, there was a good mix of martial arts and general embedded topics instead of the original retrocomputing focus. The new-years resolution […]

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MCS-51 / 8051 Next Steps – Zapping into Shape

For previous articles, see here: MCS-51 / 8051 Revived – Introduction MCS-51 / 8051 – Hello STC89C52 part 1 MCS-51 / 8051 – Hello STC89C52 part 2 A preview of the next steps 8051 series for the STC89C52 series. This post will outline the next steps for interfacing the real world with that microcontroller. As […]

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A New Pal – Building a Training Dummy

Since getting back into martial arts last year, I have been looking for ways to improve throws and takedowns for (Japanese) Jiu Jitsu. I am still on the very early path in Jiu Jitsu. In our syllabus, there seems to be more focus on standing techniques than ground control up to Orange Belt. With just […]

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Hacking Low-Cost Ankle Weights

As always, if you were to embark on this yourself, do this at your own risk. There is something tribal about customizing your own fitness equipment with flying sparks. In my last grading to brown belt in Karate, my teacher strapped some extra weights on me as a handicap during the day. I have never […]

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Rebooting Fitness and Martial Arts

“The only thing an old man can tell a young man is that it goes fast, real fast, and if you’re not careful it’s too late. Of course, the young man will never understand this truth.” – Norm Macdonald I heard that there are two kinds of people after the pandemic, those that got fit […]

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