Atmel AVR Category - Page 11 of 21 - CNX Software

October 25, 2017November 14, 2017 by Karl Johnson - 7 Comments

Tronxy X3S 3D Printer Review – Part 2: Upgraded Heatbed and RAMPS Board

Karl here. So the bed I mentioned in the first part of Tronxy X3S review is not very good. It took about 10-11 minutes to heat up to 60 deg Celsius. I also mentioned I was going to upgrade the board to a RAMPS board. Today we are going to look at both these upgrades. New Heated Bed I can take no credit for this one but I wanted to pass this along. Folger tech sells a 12v 280w heated bed stick on pad. I picked this up for $20, but is now $22. In order to do this upgrade you will need a MOSFET, 12V/30A power supply, and of course the pad above. Super easy installation. Remove the bed and stick on the self adhesive pad centered. Replace the power supply with new one. Should be self explanatory. In order to power this bed a MOSFET is needed. A […]

August 30, 2017August 30, 2017 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

$6.10 Loraduino Board Combines LoRa and Atmega328P MCU

We’ve previoulsy seen low costs SX1278 LoRa modules @ 433 MHz which you could connect to your own board, but Electrodragon is now selling Loraduino board with an Atmega328P MCU and SX1278 for just $6.10 / 5 Euros plus shipping, and using a layout similar to Arduino Pro Mini. Loraduino specifications: MCU – Microchip / Atmel Atmega328P MCU with Arduino pro mini bootloader Storage – 16Mbit SPI flash for data LoRa Semtech SX1278 IC with 433mhz, or 470mhz central frequency 10 km max range 20dbm max power rate (configurable by software) Tx current: 120 mA @ + 20 dBm; 90mA @ + 17dBm; 29mA @ + 13dBm Data Rate – 1.2K to 300Kbps with FSK; 18 bps to 37.5Kbps with LoRa Expansion SX1278 Lora: leadout for pins IO1, IO2, IO3 Atmega: 14x digital input/output pins (including 6x PWM outputs), 6x analog inputs (TBC) Misc – Programmable LED (D7), power LED, […]

August 15, 2017August 15, 2017 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Aspencore 2017 Embedded Markets Study – Programming Languages, Operating Systems, MCU Vendors, and More

Aspencore media group asked readers of their EE Times and Embedded.com websites to fill out an online survey about their embedded system projects. They got 1,234 respondents mostly from North America (56.3%), followed by Europe (25.2%), and Asia (10.6%). This resulted in a 102-page market study which you can download here. I’ve extracted a few slides to have a look at some of the trends. C language is still the most used language in embedded systems, but other languages like C++, Python and even assembly language are gaining traction. Operating system is more spread with Linux being the most used via Embedded Linux distributions, Debian, and Ubuntu. FreeRTOS comes in second place, while Android registers fourth with 13%. Git has finally supplanted Subversion in 2017, with all other version control software losing ground. Switching to some hardware slides, 44% used a development board to start their embedded design with ST […]

July 17, 2017 by Karl Johnson - 3 Comments

Tevo Tarantula 3D Printer’s Large Dual Extruder Auto Bed Level Sensor Firmware Upgrade

What a title. Just a quick update on the Tevo I am reviewing. I didn’t want to upgrade the firmware, but I read so many posts on Facebook about it I took the plunge. I didn’t like was the firmware that came with it. It only did a 3 point level, and seemed to go outside the build plate dimensions. The first 2 printers I have reviewed were Marlin, so it was what I am most familiar with. I used Jim Brown’s Marlin fork as a base. It was missing dual extruder and auto level sensor in the pre-configured profiles. It took a while, but I was able to add the extra features. The auto bed level sensor connects to where the normal Z end stop sensor is connected. I would like to warn you to warm your bed for 5 minutes for the best reproducible results. I tested several […]

June 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

μduino May Be the World’s Smallest Arduino Board (Crowdfunding)

OLIMEXINO-85S may have held the title of the world’s smallest Arduino (compatible) board for the last few years, being barely bigger than a micro SD card as it measures about 16.9 x 12.7 mm, but there’s a new mini champion in town with μduino board measuring just 12 x 12 mm. μduino board specifications: MCU – Microchip Atmel ATMEGA32U4 8-bit AVR microcontroller @ 16 MHz with 2,560 bytes of RAM, 32KB flash, and 1024 bytes of EEPROM (Arduino Leonardo compatible) I/Os 6x Analog I/O ports 14x Digital I/O ports (including Rx/Tx) including 7x PWM 1x Analog reference voltage port 1.27mm pitch Programming / Debugging – 1x micro USB port; 6-pin ICSP programming ports (load custom bootloaders, program other boards, etc) Misc – Status LED, reset button Power Supply – 5V via micro USB port; 5V voltage regulator (accepts up to 16V DC); 2x 5V ports; 2x ground ports Dimensions – 12x […]

May 12, 2017May 12, 2017 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

EduExo DIY Robotic Exoskeleton Kit is Arduino Powered, 3D Printable, Designed for STEM Education (Crowdfunding)

Robotic exoskeletons are used for medical purposes such as helping with the rehabilitation of stroke patients, or enable paraplegics to walk again, as well as in the work place to assist people lifting heavy objects. While it’s possible to learn about the theory about exoskeleton technology, practical experience may help grasping all concepts better. However, there are not many courses available, and exoskeletons are usually expensive, so Volker Bartenbach, PhD at ETH in Zürich, has decided to created EduExo robotic exoskeleton kit for education purpose. The EduExo hardware is based on off-the-shelf components like an Arduino UNO board, a motor, and a force sensor, as well as a rigid exoskeleton structure and cuff interfaces. The latter is optional as you can get the kit without it, and will instead receive the STL files to 3D print the parts yourself. There’s also a handbook to help you get started in several […]

April 26, 2017April 26, 2017 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

NanoPi NEO Boards Get a New Arduino UNO Compatible Dock to Play with Arduino Shields

FriendlyELEC has launched a new accessory board for their NanoPi NEO / NEO 2 / NEO Air boards with UNO Dock V2.0 board compatible with Arduino UNO board thanks to its Microchip ATMeaga328P MCU and compatible headers, and also equipped with headers to plug a NanoPi NEO board. Key features for UNO Dock v2.0 for NanoPi NEO: MCU – Microchip ATmega328 8-bit AVR MCU @ 16 MHz with 2KB SRAM, 32KB flash, 1024 bytes EEPROM USB – 2x USB 2.0 ports connected to NEO board Expansion Arduino UNO headers for shields Female headers to insert the NanoPi NEO board Male headers to access NanoPi NEO boards’ IOs Debugging & Programming – 1x micro USB port (USB to UART), ICSP header, NEO debug UART header Misc – Power on/off, reset button, UART select jumper Power Supply – 12V DC via 2.1mm power barrel The system would be great if NanoPi […]

March 10, 2017March 10, 2017 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

Macchina M2 is an Open Source Hardware OBD-II Development Platform for Your Car (Crowdfunding)

ODB-II Bluetooth adapter and head-up displays to monitor and diagnose your car have been around for a while. I actually got two models to use with a Toyota Avanza and Torque Lite app, but never managed to make it work with my phone. Macchina M2 board is doing much of the same thing and more, as it is open source hardware, and supports more communications protocols including GPS, WiFi, 3G/LTE, BLE, and Ethernet using XBEE boards. Macchina M2 specifications: MCU – Atmel SAM3X8E ARM Cortex M3 processor @ 84 MHz (also used on Arduino DUE) with 96 KB SRAM, 512KB flash Storage – micro SD card socket, 32KB EEPROM via I2C USB – 1x micro USB port (USB device or host mode) Wireless XBee Socket – For Bluetooth LE, WiFi, GSM, 3G, LTE, I/Os 6x automotive level I/O pins to control 12V devices (Examples: relays, fans, lights, etc) OR act […]