![]() Take in account that this compatibility doesn't work both ways, so you won't be able to open an S4A project from within the original Scratch. However, you won't be able to share your projects on the Scratch community website because doing so goes against the Scratch terms of use. ![]() S4A is backwards compatible with Scratch, so you can open Scratch projects in it. S4A allows you to control as many boards as USB ports you have. You can manage a board wirelessly by attaching an RF module to it, such as Xbee. S4A allows for 6 analog inputs (analog pins), 2 digital inputs (digital pins 2 and 3), 3 analog outputs (digital pins 5, 6 and 9), 3 digital outputs (pins 10, 11 and 13) and 4 special outputs to connect Parallax continuous rotation servomotors (digital pins 4, 7, 8 and 12). ConnectivityĬomponents have to be connected in a particular way. Other boards haven't been tested, but they may also work. S4A works with Arduino Diecimila, Duemilanove and Uno. ![]() It is possible to connect to multiple boards at the same time by just adding a new Arduino sprite. The Arduino sprite will automatically find the usb port where the board is connected. In S4A, an Arduino board is represented by a special kind of sprite. You can find blocks to manage standard and continuous rotation servomotors: The interfaceĪn S4A program to control a light-sensor Theremin, with record and playback capabilitiesĪrduino objects offer blocks for the basic microcontroller functionalities, analog and digital writes and reads, and also for higher level ones. The goal is also to provide a high level interface to Arduino programmers with functionalities such as interacting with a set of boards through user events. The main aim of the project is attracting people to the programming world. There is also a sensors report board similar to the PicoBoard one. It provides new blocks for managing sensors and actuators connected to Arduino. The instructions below have seemed to work for anyone here at Alorium Technology that was observing the FTDI issues.S4A is a Scratch modification that allows for simple programming of the Arduino open source hardware platform. We have found uninstalling the third-party drivers to be a solution. This potentially leads to the mysterious port disappearance issue. So, if you have followed an upgrade path from an older version of the OS without native FTDI support to a new version that has it, there can be contention between the native and third-party drivers. Somewhere around the release of macOS 10.12 Sierra (and maybe earlier), native support for FTDI drivers was included. Earlier versions of Mac OS X did not support FTDI drivers, so users would have to install third-party FTDI drivers. The exact cause of this problem is not certain, but it seems to be related to Apple’s support, or lack thereof, for FTDI drivers in the operating system. Since we’ve seen this issue pop up internally and with many customers, we decided to share what solution has been working for us so far. ![]() Rebooting the system can temporarily restore the port, but the problem eventually comes back. The symptoms we have observed generally include the spontaneous loss of the USB serial port connection to the board or loss of the port after disconnecting and then reconnecting the board from the USB programming cable. Since our boards use an FTDI chip for USB-to-serial communication, we have witnessed some of these issues when working with our boards using Mac and macOS. Ongoing macOS FTDI driver issues plague many users connecting the Arduino IDE to boards that use an FTDI chip. How to Fix FTDI Driver Issue on Mac and macOS ![]()
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