Questions tagged [johnny-five]

Johnny-Five is the JavaScript Robotics & IoT Platform. Released by Bocoup in 2012, Johnny-Five is maintained by a community of passionate software developers and hardware engineers. Over 75 developers have made contributions towards building a robust, extensible and composable ecosystem.

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Is the johnny-five library and javascipt good for Arduino projects?

I am new to Arduino. I just have my Arduino UNO kit and started to do some small projects with node.js and the Johnny-five library. My question is why there not many content about javascript+...
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341 views

Arduino: command not found

After installing the Arduino IDE on MacOS (1.8.5), I am trying to run some commands in the terminal to flash the firmware on an Uno R3. I have successfully connected and uploaded through the GUI, but ...
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676 views

Firmata: how to set a particular pin to high on boot?

I'm working on a project that use J5, so is using the standard firmata, this project is using an opto 4 channel relay, when the board is booting the pins state are set to low, so as soon as I power ...
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45 views

Johnny-five driving LCD Matrix or call Arduino library from Johnny-five

I would like to know if it's possible to drive an LED Matrix like this one with johnny-five. If not, how can i call Arduino library/code from johnny-five. If I Write method on sketch into the Arduino,...
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402 views

Johnny Five LCD: black boxes only

I posted this also at Stack Overflow. I have tested the Johnny Five LED example on my Arduino Uno, and it worked fine. Now I need to test Johnny Five LCD. I connected all wires correctly. The code: ...
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1k views

Using Johnny-five API with RFID Controller Shield

Is it possible to use the Adafruit PN532 NFC/RFID Controller Shield with the Johnny Five API? I've searched the depths of google and I'm unable to find anything so far. If it is possible, how can I go ...
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326 views

NodeJS (Galileo-IO) + Arduino sensor library

I've done some basic apps with NodeJS firmata where I can connect to my Arduino Uno and do the basics like reading a pin or doing a servo write. I'd like to go further and play with some different ...
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797 views

How to delay so that LED stays on a bit longer?

I have a circuit with a shift register which controls 8 LEDs: http://node-ardx.org/exercises/5. In code, I created a function cycle() cycle through each LED one at a time, but this occurs too quickly ...
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368 views

74HC595N in series error

I want have 2 74HC595N shift registers in series. I built this schematic When I send a value to the first register, it is sent to the second one. I have same value on both. I change them (master/...