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A quick and dirty demo video to show MPTH's GPIO port can also be used for some complex tasks.
Here the MPTH is connected to a computer via a FTDI USB to Serial Cable. The computer is running a processing sketch and sending out both text and MPTH GPIO commands that change values on the GPIO port to run a Macetech ShiftBrite.
Download Processing sketch used in this demo: MPTH GPIO Demo with ShiftBrite
The PmodSSD is a two-digit seven-segment display. Users can toggle through GPIO signals which digit is currently on at a rate of 50 Hz or greater to achieve persistence-of-vision to give the effect of both digits being lit up simultaneously.
A square Lego box. The GPIO ribbon goes in through a hole cut in the top plate. There is also a slot behind that opening so that the iMac and Raspberry Pi can be removed together without the need to disconnect the GPIO cable. The opening on this side could be filled in. On the other side there is a partial opening for the USB power cable to the Pi.
Are you curious to know more about the exciting new Windows 10 IoT platform for Embedded ARM Devices? Join Daniel Lang (CTO, Toradex Inc.) as he demystifies Windows 10 IoT for you in his speaker session at the upcoming ARM TechCon 2015, one of the world’s leading platforms for system developers working on the ARM® architecture. Windows 10 IoT marks the first time in the history when the Windows OS will be simultaneously used across the entire range of computing platforms, from the smaller mobile phones to our household PCs, servers and even devices like Xbox and HoloLens. Join the 50-minute Technical Session conducted by Daniel to understand Windows 10 IoT and know about its advantages and limitations. You will also learn about the developer experience and how you can gain access to low level interfaces like GPIOs, I2C and SPI during the conference. Get your passes here: schedule.armtechcon.com/session/windows-10-iot-for-embedd...
The PmodENC is a rotary shaft encoder with an integral push-button and slide switch to provide multiple types of GPIO inputs from the user. An encoder is commonly used in freely rotating knobs to detect how many "clicks" have occurred.
The PmodSSD is a two-digit seven-segment display. Users can toggle through GPIO signals which digit is currently on at a rate of 50 Hz or greater to achieve persistence-of-vision to give the effect of both digits being lit up simultaneously.
LPC-P2138 by Olimex based on the LPC2138 microcontroller by NXP that is an ARM7TDMI architecture.
This uses the LPC2138/01 revised version of the LPC2138. Namely, this has the "fast GPIO" capability.
My new toy in the lab.
The Pmod8LD is a set of 8 high-bright LEDs that are each individually driven by a logic-level transistor.
The PmodHB5 is a 2A H-Bridge module. This module includes a header with integrated motor feedback channels with Schmitt-trigger inputs. The H-Bridge can be driven through GPIO signals.
store.digilentinc.com/pmodhb5-h-bridge-with-feedback-inputs/
Photos from Medford BLM Grants Pass Resource Area National Public Lands Day 2010. Original defacto copyright BLM 2010. Reposted to Flickr via secondary usage rights by photographer James Sowerwine.
The PmodTPH2 offers 12 external pin headers so that users can easily test the GPIO signals passing through each of the pins.
The PmodSTEP provides a four channel drive for a stepper motor via the ST L293DD. Users may wire two pairs of channels in series to drive up to 600 mA of current per channel and can view the current status of a GPIO signal through a set of user LEDs.
The PmodSWT provides users with four slides switches for up to 16 different binary logic inputs to for the attached system board.
The PmodSSD is a two-digit seven-segment display. Users can toggle through GPIO signals which digit is currently on at a rate of 50 Hz or greater to achieve persistence-of-vision to give the effect of both digits being lit up simultaneously.
A perfect trio, which make the Raspberry Pi into an extensible, powerful arduino-like platform, protecting the GPIO from harm.
The PmodENC is a rotary shaft encoder with an integral push-button and slide switch to provide multiple types of GPIO inputs from the user. An encoder is commonly used in freely rotating knobs to detect how many "clicks" have occurred.
How to secure the Raspberry Pi on the breadboard while you are testing the Lighttpd web server? Use some Blu Tack! Ok, the one I am using is the UHU patafix but you are getting the main idea! embeddedday.com
The PmodPS/2 is a module that allows users to interface PS/2 style mice or keyboards with their system. By supplying a clock signal to the Pmod, users can then receive the standard 11-bit words that are sent from the attached peripheral.
Raspberry Pi based open source 3d scanner controller electronics.
This set uses a typical A4988 stepper controller (common for 3d Printers) to turn a stepper to rotate a turntable holding a object being scanned.
Further it uses a Darlington array chip to drive a pair of line lasers (exiting to the right).
I had to double-up on capacitors (on the 5V and 12V) to meet the voltage rating specified.
Some wires are obscured by the Pi-Cobbler (Adafruit connector for a cable to a RaspberryPi at the bottom).
One important detail I descovered wiring this up, it makes use of GPIO pin 27. That isn't necessarily an issue, except that this GPIO pin was changed between Rev1 and Rev2 boards. I'm not sure you can't get the Rev1 boards to work, but the software wouldn't work out of the box.
Before trying things out with wiringPi, insulate the 5V pin to prevent accidental non +3.3V usage that may brick the chip
while(1)
{
GPIO_SetBits(GPIOE, GPIO_Pin_5 );
Delay(10);
GPIO_ResetBits(GPIOE, GPIO_Pin_5 );
Delay(100);
}
The PmodTPH2 offers 12 external pin headers so that users can easily test the GPIO signals passing through each of the pins.
The PmodR2R is resistor ladder with a R-2R resistor configuration. Users can provide 8-bits of parallel data to the module through GPIO signals. This setup teaches users the basic principles behind a Digital-to-Analog Converter.
store.digilentinc.com/pmodr2r-resistor-ladder-d-a-converter/
Aufgenommen mit der modifizierten Version meines Canon EF 38-76mm Objektivs. Ein Bild aus der ersten Testreihe.
while(1)
{
GPIO_SetBits(GPIOE, GPIO_Pin_5 );
Delay(1000);
GPIO_ResetBits(GPIOE, GPIO_Pin_5 );
Delay(1000);
}
The Digilent PmodI2S a 24-bit Digital-to-Analog converter for stereo audio. The chip automatically detects a wide variety of sample rates that the user supplies through GPIO signals up to 192 kHz and can handle between 16 and 24 bits of audio data.
Looking at the schematics for model B+ it seemed that this should be possible, since the 5v gets fed to step-down converters. So I tried it... and it worked with a fully charged battery. In the photo you should be able to see the green activity led glowing faintly.
Using the GPIO pins also bypasses some protection circuitry, so be very careful about polarity while doing this. The power good circuit to light up the red PWR led doesn't work in this mode.
I had read something similar on www.daveakerman.com/ about model A but can't find the link anymore. Apparently most USB wifi dongles should also work as they don't seem to need 5v.
Another article on this:
cyclicredundancy.wordpress.com/2015/11/28/power-raspberry...
we have 5 of these, pen cap for size comparison, these are the Intel Edison, microcontroller. In Intel's own words, this is a.
"Edison board is an Intel® Atom™ 22nm SoC with a dual-core CPU at 500Mhz and a MCU at 100Mhz. This allows the product to collect and preprocess data via the MCU in a low power state and hand the filtered data off to the CPU for analytics. The Intel® Edison board includes 1GB of memory, 4GB of storage and dual-band Wi-Fi and Bluetooth* 4.0 for communications. It supports 40 GPIOs with multiple configuration options."