VFD Modular Clock IV-18 SMT edition is a special solder-free kit version of the original VFD Modular Clock . The firmware is mbed based and is freely available at http://developer.mbed.org/teams/Akafugu/code/vfd_modular_clock_mbed/
- IV-18 8-digit Russian VFD Display Tube
- Open source mbed based firmware
- LPC1347 ARM Cortex-M3 64kb microcontroller
- GPS (option)
- Four Letter Word
- Easy to update firmware with no special drivers required (LPC1347 usb bootloader)
VFD Modular Clock IV-18 SMT - [Link]
The miniSpartan3 is our new, low cost, tiny, FPGA kit. It starts at just $25, and there is a more powerful FPGA chip available for $35.
- The Spartan 3A XC3A50 FPGA ($25), or the Spartan 3A XC3A200 FPGA ($35) from Xilinx.
- An on-board USB JTAG Programmer to power and program your FPGA.
- An on board USB to Serial Interface.
- One HDMI port.
- 41 digital I/O pins.
- A 4-channel analog to digital converter running at 200 KSPS with 8 bit resolution.
- 4 Mbit SPI Flash.
- 32Mhz oscillator.
- 3 LEDs for debugging.
- 2 DIP switches.
miniSpartan3 - [Link]
The Emic 2 Text-to-Speech Module is a multi-language voice synthesizer that converts a stream of digital text into natural sounding speech. Using the universally recognized DECtalk text-to-speech synthesizer engine, Emic 2 provides speech synthesis capabilities for any embedded system via a simple command-based interface.
EMIC 2 Text-to-Speech Module - [Link]
by Francesc Casanellas @ edn.com:
Figure 1 illustrates a digitally programmable precision resistance that can serve as a microprocessor-driven power-supply load in custom-designed ATE (automatic-test equipment). An 8-bit current-output DAC, IC1, a DAC08, drives current-to-voltage converter IC2A, which in turn drives the gate of power MOSFET Q1. The device under test connects to J1 and J2. In operation, current from the device under test develops a voltage across sampling resistors R8A and R8B.
Digitally programmable resistor serves as test load - [Link]
by Stevica Kuharski:
In the past few months ESP8266 has created a real revolution in the IoT space. I’m using it in a project that will hit Indiegogo in a month or so and you, of course will support me ☺ During the development process I’ve learned a lot and I want to share a part of it. Let’s build cheap open WiFi finder together!
How to build an open WiFi finder using ESP8266 - [Link]
by Tomasz Ostrowski @ tomeko.net:
Extremely cheap low-speed PC/USB oscilloscope with STM32 (STM32F042) microcontroller.
Announced in January 2014 Cortex-M0 microcontroller family that features crystal-less USB FS device allows to cut noticeable part of BOM when building oscilloscope/recorder similar to miniscope v2c/v2d. STM32F042F devices are interesting in particular because of small and friendly TSSOP20 package with minimum number or power lines.
STM32F042F4 devices feature USB bootloader (DFU), single 1MSps ADC (so single channel sampling would be preferred to avoid crosstalk issues), 16 kB FLASH memory (~2 times more than needed) and 6 kB RAM.
Miniscope v2e – STM32F042 Oscilloscope - [Link]
Onion is launching the Omega, a hardware development board designed for software hackers (especially Web) with limited experience in hardware development. It is a tiny computer (1/5 the size of the raspberry pi) with built-in WiFi and Linux. The Omega allows software developers create hardware projects in familiar environments (ssh, git and npm) and using high-level programming languages they are used to, such as Python, Node.JS, PHP, etc. More importantly, the Omega is fully integrated into the Onion cloud service, allowing hackers to prototype IoT applications very quickly.
Onion Omega – An invention platform for the Internet of Things - [Link]
by Rui Santos @ randomnerdtutorials.com:
If you want to learn more about the ESP8266 module, first read my Getting Started Guide for the ESP8266 WiFi Module. In this project you’ll create a standalone web server with an ESP8266 that can toggle two LEDs.
Why flashing your ESP8266 module with NodeMCU?
NodeMCU is a firmware that allows you to program the ESP8266 modules with LUA script. And you’ll find it very similar to the way you program your Arduino. With just a few lines of code you can establish a WiFi connection, control the ESP8266 GPIOs, turning your ESP8266 into a web server and a lot more.
ESP8266 Web Server Tutorial - [Link]
Markus Gritsch shared his WiFi LED light project in the dangerousprototypes forum:
I built a prototype for a WiFi controllable LED light, using the popular ESP8266 module running the NodeMCU firmware . To allow controlling the WS2812B LEDs from Lua, I extended the firmware with a bit of C code
WiFi LED Light (ESP8266 + WS2812B + Lua) - [Link]
The Zero Tiny BLE is a small low cost and low powered embeddable board with an AVR ATTiny85 microcontroller and a Bluetooth 4.0 (Bluetooth Low Energy or BLE) radio.
AVR ATTiny85 microcontroller running at 8MHz internal clock and 3.3V. ATTiny85 Datasheet.
HM-10 Bluetooth 4.0 Low Energy module. HM-10 Datasheet.
Powered by single cell 3.7V Lithium Polymer battery (LiPo) or USB B mini port.
LiPo battery recharge capabilities via the USB B mini port.
Standard UART communication over Bluetooth 4.0.
Easy prototyping via breadboard.
Use either Arduino or AVR-GCC development environments.
Small form factor of 20mm x 47mm (0.79” x 1.85”)
You can purchase a complete board at zeroengineering.io
You can order unpopulated boards from OSH Park
Zero Tiny BLE – low cost and low powered embeddable board - [Link]