Category: Arduino
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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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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 They have been replaced by this one, offering a simpler method to get started.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 They have been replaced by this one, offering a simpler method to get started.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…
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VC-1: Volume control for guitar using Arduino
As explained here, here and here, the VC-1 is a volume control for guitar (or bass) that can use a potentiometer, a variable analog signal or a Midi command to change the output volume.
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MIDI Experiments: Arduino as master
Arduino as a Midi master The previous two posts explained how standard MIDI can supply some current at 5 Volts if implemented according to the MIDI standards. In this post, I go a little further and explain how an Arduino, set up as a MIDI device, can power a second Arduino using a standard MIDI…
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MIDI experiments: Stealing power for an Arduino
In the previous post, I explained a simple circuit that will indicate if a MIDI OUT port can provide 5 Volts and a little bit of current between pin 2 (ground) and pin 4 (+5 Volts). Not all MIDI devices are wired that way. Some leave pin 2 disconnected (bad) while others connect it to chassis…
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MP-2 + MRe: Hacking the Alesis Vortex and using a Wireless Midi Transmitter
A two-project merge! The Alesis Vortex needed a bit more… controls! So I decided to add a few sensors that would give me greater flexibility when playing. The Vortex is already quite capable, but my left hand was not “used” enough. Sure, there is a touch strip and a pitch-bend wheel at my finger tips.…
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MRe-1: A special version of the MP-1: A Midi Transmitter
A special version of the MP-1 was built to get MIDI data from the Vortex and send it wirelessly to a computer for further processing. I have decided to name it the Midi Remote Emitter 1 (MRe-1). In fact, the electronics is the same as the MP-1, but the Midi-Out port was not put in,…
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Jeenode: Interference
Because of the previous post, I decided to test a bit more. To see if I could physically move the board to reduce interference. So I connected the Arduino with the attached RFM12B radio module. The one using the Sparkfun MIDI breakout board. As I was clearing the desk, I placed the Arduino on a…
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RFM12B: Dealing with radio interference
This is a screenshot from the serial monitor of a Jeenode (Arduino compatible) connected to my computer. It runs a program that will listen to incoming radio messages through its RFM12B radio transceiver. In this window, you can clearly see too lines that start with “OK”. These are real messages coming from my EM-1 Energy Monitor.…