TinyGCode: a GCode engine for experiments.

Copyright (C) 2019 Julia Longtin

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program. If not, see https://www.gnu.org/licenses/.

To contact the authors, email [email protected].

Application

tinyGCode is a G-Code interpreter, for sensors, and other components.

Supported boards:

At the moment, the only supported board is the Arduino Nano, populated with an ATmega328p microcontroller.

Supported sensors:

AMG8833 infrared sensor

Building

Dependencies:

On debian-alikes:

sudo apt install make gcc-avr avrdude avr-libc

Compiling:

cd application
make

Programming:

Because of the ability for errors in the fuse setting / flashing process to make a brick of your controller, I have not automated that.

Please select a programmer by editing the Makefile, assuming you're not using the default 'usbtinyisp v2.0'.

Fuses

Run make showfuses to ensure your programmer selection is working.

Run make shownewfuses to see the fuse values that were calculated from the settings in the makefile. Read them, and understand them before setting them, or you may brick your device!

Flashing

To flash optiboot, and then my firmware, i use the following command:

make && sudo avrdude -c usbtiny -p atmega328p -u -D -e -U flash:w:../bootloader/optiboot/optiboot/bootloaders/optiboot/optiboot_atmega328.hex && sudo avrdude -c usbtiny -p atmega328p -u -D -U flash:w:tinygcode.hex

Using

Open up your favorite serial gcode manager (mine's pronsole), or:

screen /dev/ttyUSB0

• Type 'M105' to get the temperature of the AMG88xx's thermistor.
• Type 'M355 S1 P255' to turn on the nano's LED.
• Type 'M111 S0' to turn echo off.
• Type 'M240' to recieve the current AMG88xx camera feed as a json object. For instance:

"image_as_json":{ "p0":"5.4375", "p1":"5.4375", "p2":"5.375", "p3":"5.6875", "p4":"5.625", "p5":"5.375", "p6":"5.25", "p7":"5.25", "p8":"5.125", "p9":"5.1875", "p10":"5.125", "p11":"5.375", "p12":"5.4375", "p13":"5.25", "p14":"5.125", "p15":"5.1875", "p16":"4.9375", "p17":"5", "p18":"5.0625", "p19":"5.0625", "p20":"5.1875", "p21":"5", "p22":"5.125", "p23":"5.1875", "p24":"5.25", "p25":"5", "p26":"5.0625", "p27":"5.125", "p28":"5", "p29":"4.9375", "p30":"5.0625", "p31":"5.1875", "p32":"4.875", "p33":"5.0625", "p34":"5", "p35":"4.9375", "p36":"5", "p37":"5.0625", "p38":"5.1875", "p39":"5.125", "p40":"4.9375", "p41":"5", "p42":"5", "p43":"5.0625", "p44":"5.0625", "p45":"5", "p46":"5.125", "p47":"5.0625", "p48":"5", "p49":"4.875", "p50":"5.0625", "p51":"5", "p52":"4.9375", "p53":"4.9375", "p54":"5.0625", "p55":"5.0625", "p56":"4.9375", "p57":"4.875", "p58":"5.0625", "p59":"4.9375", "p60":"5.0625", "p61":"5.0625", "p62":"4.9375", "p63":"5" }

Bootloader

As this is meant to go on a dev board, we recommend you use our preferred bootloader(OptiBoot). You can select which bootloader you're using by editing application/Makefile .