Author: rt
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Replacing the electronics in a hot tub – Part 3: Arduino Pump and heater control
Replacing the electronics in a hot tub: Arduino to control pumps and the heater This is the third post in the series “Replacing the electronics in a hot tub”. The first post is here. This one is about the first version of the Arduino micro-controllers programming. I decided to separate the Sensors and Actuators circuits…
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Replacing the electronics in a hot tub – Part 2
Replacing the electronics in a hot tub The previous post described the reasons for this projects. It also gave a brief description of the hot tub in which I will replace the electronics. Since I can’t play with the existing electronics until late spring (todays temperature was -20…) I will start preparing my controller using…
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Replacing the electronics in a hot tub – Part 1
This is the first article of a series for a project with the goal of replacing the electronics in a hot tub from 2005. This Cal Spa tub is over twenty years old! The electronics have started to fail in recent years. Time to replace everything! I already replaced the secondary pumps controller after it…
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Detailed design of 3D print piece example: Sink Strainer
This post is about the detailed design of a 3D printed simple kitchen sink strainer. I tried a few existing models but none fitted properly and none worked perfectly. This is an article about all the details needed for such a simple piece. Initial Research Looking at the strainer that came with the sink, I…
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Dishwashing a 3D model printed with PLA plastic
I created a simple spoon/utensil holder to use while cooking. It’s a very simple model that is printed with PLA. I decided that washing it by hand was a bit tedious so I placed it in the dishwasher. I knew that it might distort because it was printed with PLA material, which is known to…
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Behringer FCB1010 – Alternate power source
Behringer FCB1010 – Alternate power source. The Behringer FCB1010 has an internal power supply that is fairly easy to replace. There are a few options available: I will detail these options. Open your FCB1010 by removing all the screws under your pedal board. Note that there are two screws holding the transformer and one screw…
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Cal Spa auxiliary pumps fix with Arduino
The auxiliary pumps on my old California Spa (from 2005) stopped working one after the other over a few (winter) months. I decided to dismantle the control panels that are in the spa. They both seemed water logged and the touch surfaces were all cracked. Dismantling the control boards is a mess! they are filled…
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IoT REBOOT – Apple HomeKit (Siri), Raspberry Pi, node-red, Homebridge
Simplifying the IoT setup 2024-11-6: Well… this is technology, and it evolves fast! This post is obsolete and is kept here as a reference. I will re-publish a more contemporary version soon. Check the main page. I will put a link here when it’s done. The goal of this project is to install a Internet…
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Apple HomeKit on iOS with Arduino (ESP8266) through Raspberry Pi – Part 2
Apple HomeKit on iOS with Arduino (ESP8266) through Raspberry Pi Note: This post, and the previous one (part 1), are obsolete. They have been replaced by this one, offering a simpler method to get started. They are left here for reference. Part 1 of this article explained how to install a HomeKit server on a…
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Apple HomeKit on iOS with Arduino (ESP8266) through Raspberry Pi – Part 1
The Internet of Thinks (IoT), using and iPhone, Siri, HomeBridge, MQTT and an Arduino – Part 1 Note: This post, and the next one (part 2), are obsolete. They have been replaced by this one, offering a simpler method to get started. They are left here for reference. The global project is shown in this…