STMicro STM32 Category - Page 39 of 42 - CNX Software

April 6, 2015 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

JYE Tech DSO138 is a $23 DIY Oscilloscope Kit

Back in 2012, I was pleasantly surprised when I discovered they made Digital Storage Oscilloscope (DSO) for less than $200, and today, you can find several oscilloscopes for less than $100, albeit with limited performance, such as DS201. But if you don’t need a high speed DSO and just want to have some fun, JYE Tech DSO138 is a single channel oscilloscope DIY kit that you need to assemble yourself, and sells for just $23 on Banggood, or about $30 on Aliexpress, or Ebay. DSO138 key specifications: MCU – STM32F103C8 ARM Cortex-M3 processor Display – 2.4 -inch color TFT display Analog bandwidth – 0 – 200KHz Sampling rate – 1Msps max Sensitivity – 10mV/Div – 5V/Div Sensitivity error – < 5% Vertical resolution – 12-bit Timebase – 10us/Div – 500s/Div Record length – 1024 points Input impedance : 1MΩ Maximum input voltage : 50Vpp (1:1 probe), 400Vpp (10:1 probe) Built-in […]

March 26, 2015March 26, 2015 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

MXCHIP EMW3162 is a $10 Low Power Wi-Fi Module for IoT Applications

You can’t beat ESP8266 Wi-Fi modules on price to add Wi-Fi to your IoT projects, but Hackaday found a new Wi-Fi module by Shanghai MXCHIP Information Technology that sells for $10 on Seeed Studio or Amazon US, that should be better suited to battery operated project thanks to a lower power consumption. EMW3162 also features a more powerful STM32F205 cortex M3 micro-controller, as well as more I/Os than ESP8266. Specifications for EMW3162 Wi-Fi module: MCU – STM32F2 Cortex M3 MCU @ 120 MHz with 128KB RAM, 1MB flashOn Wi-Fi connectivity 802.11b, 802.11g, 802.11n (single stream) on channel 1-14 @ 2.4GHz WEP, WPA/WPA2 PSK/Enterprise (hardware encryption) Transmit power: 18.5dBm@11b; 15.5dBm@11g; 14.5dBm@11n MIN Receiver Sensitivity: -96 dBm Max Data rate: 11Mbps@11b; 54Mbps@11g; 72Mbps@11n HT20 Wi-Fi modes: Station, Soft AP and Wi-Fi direct Advanced 1×1 802.11n features: Full/Half Guard Interval, Frame Aggregation, Space Time Block Coding (STBC), Low Density Parity Check (LDPC) Encoding […]

March 11, 2015 by Jean-Luc Aufranc (CNXSoft) - No Comments

Emcraft Systems STM32F7 ARM Cortex M7 SoM and Development Kit Run uClinux

STMicro announced their STM32F7 MCU family the same as ARM announced their latest ARM Cortex M7 core for high-end micro-controllers last September. Emcraft Systems have now launched a STM32F7 system-on-module with 32MB SDRAM and 16MB NOR flash, and ported uClinux to the platform. The company has also launched a STM32F7 starter kit for evaluation and development. Both target industrial automation, system and power management, wireless networking / sensors and other embedded applications. STM32F7-SOM-1A Module STM32F7 system-on-module specifications: MCU – STMicro STM32F746 Cortex M7 MCU up to 200 MHz with 320KB RAM, 1MB flash in TFBGA-216 package System Memory – 32MB SDRAM Storage – 16MB NOR flash Connectivity – 802.3 Ethernet PHY SoM connectors – 2x 80-pin (0.4mm pitch) Debugging – ARM SWJ-DP combined JTAG and serial wire debug port Misc – Watchdog, RTC, USB and other I/Os via SoM connectors Power – 3.3V DC; Low-power mode with short startup times; […]

February 26, 2015February 26, 2015 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Spark Electron Cellular Module for M2M Projects Comes with a $3 Monthly Data Plan (Crowdfunding)

Spark IO started with Spark Core, a tiny Wi-Fi module, followed with Spark Photon is a cheaper, faster, and tinier Wi-Fi module, and now the company is launching Spark Electron to bring cellular connectivity to hobbyist projects at an affordable cost and small form factor. Spark Electron specifications: MCU – ST Micro STM32F205 ARM Cortex M3 microcontroller @ 120 MHz with 1MB Flash, 128K RAM Cellular Connectivity – U-Blox SARA U-series (3G) or G-series (2G) modem + NanoSIM card slot + u.FL connector for Antenna Headers – 36 pins with 28 GPIOs (D0-D13, A0-A13), plus TX/RX, 2 GNDs, VIN, VBAT, WKP, 3V3, RST USB – micro USB port for power and programming Misc – Setup and reset buttons, LED Dimensions – 5.08 cm x 2.03 cm x 0.76 cm (1.27 cm including headers) The board can be programmed with Wiring (Arduino’s programming language), C/C++, or ARM assembly. It’s longer than Spark […]

February 3, 2015February 3, 2015 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

OpenMV is an Open Source Hardware VGA Camera Controllable with Python Scripts (Crowdfunding)

Recently I’ve seen some activity about tiny cameras for makers, including Linux based SinoVoIP BPI-D1 recording up to 720p30 videos, and an upcoming mini camera for VoCore Wi-Fi module. There’s now another project called OpenMV, and open source camera for machine vision applications based on STMicro STM32, recording up to VGA resolution at 20 fps, and controlled using Micro Python scripts. OpemMV camera specifications: MCU – STM32F427, 180MHz, 225 DMIPS, 256K SRAM, 2M Flash, DMA/FPU/DSP/DCMI/SDIO/2D Acceleration Camera – 2MP OV2640 sensor with interchangeable M12 lens, 2x IR LEDS Storage – uSD interface: SDIO (4-bit mode) Expansions – 2x headers with USART, SPI, I2C, PWM, ADC/DAC, GPIOs, PWM and power signals USB – micro USB 2.0 Full Speed port Power Supply – 5V via USB; Current draw is approximately 140mA, steady state Dimensions – 4.57 x 3.56 cm The camera can be controlled using (Micro) Python scripts. with the project’s OpenMV […]

January 29, 2015December 27, 2024 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

FOSDEM 2015 Schedule – January 31 – February 1 2015

FOSDEM (Free and Open Source Software Developers’ European Meeting) takes place every year during the first week-end of February. This year the developer-oriented event expects to bring over 5000 geeks to share ideas and collaborate on open source projects. Contrary to most other events, it’s free to attend, and you don’t even need to register, just show up. FOSDEM 2015 will take place on January 31- February 1 in Brussels. There will be 551 sessions divided into 5 keynotes, 40 lightning talks, 6 certification exams, and with the bulk being developer rooms and main tracks, divided into 7 main tracks this year: Languages, Performance, Time, Typesetting, Hardware, Security and Miscellaneous. I’m not going to attend, but it’s still interested to see what will be talked about, and I’ve concocted my own little virtual program out of the main tracks and developers’ rooms. There’s a few minutes overlap between some talks […]

January 18, 2015October 22, 2018 by Jean-Luc Aufranc (CNXSoft) - 25 Comments

Meet STMicro STM8S Based One Dollar Development Board

ESP8266 modules are $3 Wi-Fi boards targeting IoT applications that can be used in standalone mode, or connected to another MCU based board. But what if you don’t actually need Wi-Fi, but instead require a tiny board to control a few GPIOs? Arduino Pro mini can be used for this, but it costs about $10 on Sparkfun, and it’s certainly cheap enough for most projects. Switching to Aliexpress, you can get Arduino Pro mini clones for about $2, and a bit less in 10 pieces quantities. But you can get even cheaper and add a micro USB port with STMicro STM8S based boards that can be found for 5.5 CNY (Less than $1) on Taobao.com, or – once oversea shipping is factored in – about $1.60 to $1.70 on BuyInCoins, or Aliexpress without headers, and the version with headers sells for about $2 or more. Let’s check the board specifications: […]

November 14, 2014November 23, 2014 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Spark Photon is a $19 Hackable IoT Wi-Fi Board

Spark Core is a popular Wi-Fi module for the internet of things with a community of over 20,000 developers, but at $39 it may have started to feel a little expensive compared to the new IoT Wi-Fi modules such as ESP82666 or xWiFi, so the company has unveiled a new Wi-Fi board called Photon that’s smaller, better, and cheaper. Let’s compare Spark Core with the new Spark Photon. Feature Spark Core Spark Photon Wi-Fi Support 802.11 b/g 802.11 b/g/n Wi-Fi Setup Smart Config Soft AP Wireless Module TI CC3000 Broadcom BCM43362 MCU STM32F103 STM32F205 MCU Speed 72 MHz 120 MHz Flash Memory 128 KB 1 MB RAM 20 KB 128 KB GPIO 18 UART (Serial) Yes JTAG Yes I2C Yes SPI Yes ADC Yes DAC No Yes CAN No Yes VBAT pin exposed No Yes Wakeup pin exposed No Yes Price $39.00 $19.00 So beside slashing the price by 50%, […]