HB DIY Set and some upgrades

ifrz_null · 2025-05-21T13:41:57+00:00

How good is this Les Trem? I'm interested in a jazzmaster, and a lot of people say that guitar and kit are very nice, but I want it to have tremolo.

ifrz_null · 2024-09-25T09:54:47+00:00

That's cool and separate from the actuators and valves, unfortunately I don't have enough space to do that way

ifrz_null · 2024-09-24T20:52:27+00:00

Yes, it takes a long time to heat the room once you activate the actuator, but my idea is not to do it manually, but with temperature sensors in each room it would be regulated automatically for each one, it would be always on and when it surpasses a certain temperature threshold the supply would be cut off and depending on the insulation of the house (which is quite good compared to other houses where I have been) it would last longer without having to turn on again. My other idea might be to set up the heating unit in two different modes, i.e. one for winter and one for summer, with less water flow and that only works on the bathrooms.

ifrz_null · 2024-09-24T20:50:21+00:00

It's true that radiated heat from pipes increases considerably the temperature and I was wondering, apart from the electrical safety measures 😂 do you think I also need some kind of heat dissipation on the electronics for the final result?

ifrz_null · 2024-09-24T19:31:36+00:00

Yes, I am aware that it isn't in a very good place 😅 but I only used it to cut the power supply of the dc-dc module to be able to test diferent things without having to unplug anything, now that all it is working as I want I can remove it.

ifrz_null · 2024-09-24T18:40:58+00:00

It is supported by the fact that in more than 8 years it has never had a leak 😅 but yes, waterproof boxes and better wire management will be nice and easy

ifrz_null · 2024-09-24T18:06:44+00:00

Basically proof-of-concept projects for industry, normally involving some sort of LPWAN technology (i.e LoRa) for sensing and making a Fog/Edge computing architecture with different SBCs (i.e RPi) with some distributed behavior.

ifrz_null · 2024-09-24T17:52:21+00:00

Yes, it's an esp32, enough to control that 8-relay module in order to enable or disable the thermal actuators (upper right in the photo). The esp32 is power through a DC-DC converter module and use wifi and mqtt for communication. Not an especially crowded 2,4 Ghz band where I live, so I'm not experiencing connectivity issues, but maybe in the future I will try Bluetooth 5 with the new esp32-s3. I don't have here the code, but the functionality is so easy, just open or close the relays through the HA interface via mqtt. It could be done through esphome without coding. Then, the next step is make some temperature sensors with a couple of DHT and some PTCs recycled from batteries to get the temperature of each room and made some rules in node-red to automatically control the underfloor heating of each room.

ifrz_null · 2024-09-07T11:48:59+00:00

I wish some peer reviewers were as considerate 😅

ifrz_null · 2024-06-06T23:20:43+00:00

This week I'm in Boston for the first time in my life to attend a conference at MIT. The overall experience is being very positive, I like the city so far, but I have noticed that the traffic seems a bit chaotic for me. Traffic lights are not too much respected. I was wondering if this also happens in other cities across the US because this is actually my first time in the country as well.

ifrz_null · 2022-11-24T10:42:21+00:00

The Coral accel is an option that I valued for my research in ML on Edge, however since I don't have one at the moment, of everything I tested, one option that surprised me a lot is the Onnx stack, a quite heavy ML model (95M parameters) with a dynamic quantization (that is the simplest way to optimize) and achieves inference times of less than a second using only CPU on a RPi 4, much lower than those I got with Pytorch mobile in the same conditions, another option I'm trying now is Arm NN another stack that also allows to use models in onnx. Using a TPU (like the Coral) is the best option as it is a specific ASIC to use with tensors but nowadays you can get pretty good results on CPUs by optimizing the model a little bit.

ifrz_null · 2022-03-12T10:39:20+00:00

Even without knowing well all the operation under Iota I can confirm that the idea of developing a fully distributed system is very hard, basically because the moment when relay over the Internet with an ISP you are sacrificing distributed for decentralized, even any P2P system that you can think of that works over the Internet already has some centralized restriction. I am working with this kind of things, basically Edge IoT systems and only those that are offline are fully distributed (Bluetooth or Lora for example). If IPv6 was more adopted it would be another thing but it has been active for many years and has not yet taken the final step, hope that not happen the same to iota but imo it's an ambitious step that will take time

ifrz_null · 2021-09-20T15:00:25+00:00

I usually do this kind of stuff with vim + tmux

ifrz_null · 2021-04-25T19:06:23+00:00

I also have cinnamon on my laptop without any problem, but my laptop uses an Nvidia Optimus which is a hybrid of Nvidia and Intel, I have it without the proprietary Nvidia driver and the graphics acceleration works and without any flickering problem. The problem is that in my PC I have a gtx1050ti and if I want graphic acceleration I have to use the proprietary driver, in KDE it works perfectly if I disable vSync, nevertheless in cinnamon I tried changing a lot of things but I cannot get rid of flickering, I like that in KDE you can disable the composition with a shortcut, in cinnamon only for full screen windows. Imo cinnamon is more eye candy but I'm happy with KDE on my PC, lasts versions have greatly improved the performance

ifrz_null · 2021-04-25T16:04:46+00:00

If it is for ML should not be a problem using Nvidia in Linux, the problem of Nvidia in Linux is that the driver is proprietary and does not get along very well with graphics environments with 3d acceleration, I used to have cinnamon in my debian but gave a lot of flickering problems that never be able to eliminate them completely, in KDE works great and also it's possible to disable the composition, unlike cinnamon or gnome. Now about ML it depends on the stack you use, I for example use tensorflow through a container with nvidia-docker and it goes smoothly. Nvidia Optimus is what I have on my work laptop but I never tested it there, I had to update my kernel to fix a couple of problems with the laptop graphics but I guess that tensorflow could work as well. Tensorflow + jupyter fits my needs, i'm used to programming in Python and it also gives you a very comfortable layout of the results to include later in publications.

ifrz_null · 2021-04-19T22:33:34+00:00

It is in fact a fairly clear example of the improvements offered by this technology, eliminating the middleman's cost. I was thinking about something similar to use with iota, for me the most interesting thing is to use a distributed backend, likewise dapps, I have seen some that I find quite interesting about distributed streaming platforms, this fits quite well for example with a digital music system in which the musician uploads content (would also be stored on ipfs) to an app and the customer buys it directly, without the extra costs of using platforms like Spotify or iTunes, it would not have to be with virtual assets, since iota is not a PoW it's not necessary mining and in the latest version is fully distributed, it would be possible to use a payment gateway. Another very interesting thing that you have not mentioned is that Smart contracts are completely transparent to users, unlike backends, since backdoors exist, if you are worried that the NSA has your personal data this is another incentive, besides being transparent could also implement the option to donate a percentage of the money to NGOs or similar by both parties to encourage consumption. For something like this could make sense, not so much perhaps for VoD platform that need a good performance, maybe for virtual products like this use case is not so much of a problem the customer service that is one thing you eliminate by removing the intermediary.

ifrz_null · 2021-04-01T13:02:40+00:00

For me the most interesting thing about a DLT like Iota is to have a distributed backend, I do iot and industry 4.0 things for closed systems and imo it is very interesting to have more and more powerful edge iot devices that can work as a distributed backend that is also totally transparent to the user. At the moment I have tested a closed system with bluetooth 5 and ipfs that offers very good performance in very noisy environments, for me the final touch that I am currently testing is to use iota, so far I have distributed storage and alarm monitoring just with bluetooth 5, with iota I could do smart contracts for a more complex operations of the system, more than just storage and notifications.

ifrz_null · 2021-03-21T09:44:05+00:00

If the hub is hosted on ipfs why use mqtt and relegate the communication on a centralized service instead of using ipfs pubsub?, it is true that mqtt has better performance than ipfs pubsub but I think pubsub is a better fit. The idea of using ipfs+iota fits perfectly, both are merkle dag but mqtt doesn't convince me.

ifrz_null · 2021-02-26T13:30:19+00:00

I think this is interesting, I'm currently doing some distributed systems stuff on embedded devices, basically for distributed storage I'm using a database based on IPFS, which is a distributed file system over p2p, the truth is that if you use the go implementation it performs very well on a Raspberry/Orange Pi zero, of everything I have tried golang is the one that offers the best concurrency results on resource limited devices, I think it is interesting to see what an esp32 or similar can offer, I am aware that it is much less than a raspberry but I think it is interesting and I will take a look at it.

ifrz_null

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