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Posts Tagged ‘Raspberry Pi’

Kickstarter: R-Kade Zero

February 23rd, 2016 No comments

We’ve built a number of Raspberry Pi based arcade systems over the last few years starting in 2012 with R-Kade, last year with R-Kade Mini and now with our latest endeavour R-Kade Zero which fits into the palm of your hand.

So after receiving encouragement from a number of members at our local Maker Space we’ve took the plunge and started our first kickstarter for the R-Kade Zero mini arcade platform.

You can check it out at:

www.kickstarter.com/projects/1120658355/r-kade-zero

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Four new Raspberry Pi Zero add-on boards

January 18th, 2016 No comments

Another bunch of new PCB’s. This time for the Raspberry Pi Zero.

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In no particular order, there’s a serial RS232 board, a GVS I/O board with ULN2803 for servo’s etc., a Breakout board (I2C, SPI, UART and GPIO) and another MIDI interface ;-).

More details/info shortly.

As usually you’ll find them on our Tindie store.

Bumper box of new PCB’s

July 30th, 2015 No comments

A bumper box of 10 new (yes 10 designs) PCB’s arrived this week.

In it were 5 new (and updated) add-on boards for the Raspberry PC and 5 new boards for the Guitar Effect pedal designs we’ve been working on.

For the Raspberry Pi, we have a new revision for our popular PIIO ULNB803/GVS board which now features 2 stepper motor connectors for the popular 5v 28YBJ-48 stepper motor. A new revision for the PIAC with new screw terminals. A brand new Digi-IO which is a real world interfacing board with RS485, two relays and some level shifter for inputs. Another brand new PIIO design called “RasPellar” which is a IO co-processor board using the Parallax 32-bit 8-core Propeller CPU and a new HAT sized prototyping board that can be used by it’s self or with RasPeller.

For the guitar effects we have two designs for a “modular electronic effects pedal” or MEEP to its friend. The MEEP board design gives you access to the audio In and Out jack sockets, 9V power and Vb (4.5V) as well as the foot switch and features a true bypass while the effects are added via a smaller daughter board. So if you get sick of using one guitar effect you can simply swap it out with a new effects daughter board for a lot less than buying a new pedal. MEEP BB3 (base board – 3 pots) has three Potentiometers (pots) and MEEP BB4 (base board – 4 pots) has 4 pots. To go with the MEEP base boards there is a prototyping board, MEEP Screamer a clone of the awesome Ibanez Tube Screamer pedal and MEEP Fuzzy yet another clone of the just as awesome Arbiter Fuzz Face.

Categories: PCB, Prototype, Raspberry Pi Tags: ,

Four new Raspberry Pi add-on boards

May 13th, 2014 No comments

Another box of new boards arrived today.

In the box where 4, yes 4 sets of PCB’s.

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In the photo, the big PCB at the back is RPi-X PIAC. On the photo front row, on the left is MiniPiio LED Breakout, in the centre is MiniPiio BOP4 and to the right is MiniPiio PWM16

RPi-X PIAC is our latest RPi-X experimenter board. The acronym IAC is commonly used to describe an industrial automation and control system and adding a P in this case makes it a Pi Industrial Automation and Control :-)

PIAC has 4x SPCO Relays rated at 2A, 4x opto-isolated digital inputs, 4x 0-10V Analogue inputs and finally a RS485 communications port. So with the RPi-X PIAC you can learn about industrial control or perhaps use it for your own small industrial project.

MiniPiio LED Breakout uses the popular MAX7219 8-digit (64x LED) LED display driver chip to breakout all 64 LED outputs to 8 rows of pin headers. From these pin headers you can plug in individual LED’s to make whatever LED display layout you want. It’s a shame its not Christmas as we think it would make a great blinky LED Christmas tree :-)

MiniPiio BOP4 or Board of Pots (or should that be “Bored of Pots”) has 4 potentiometers (3x rotary and 1x slider) and connects them to a 4-ch MAX3004 ADC. I think it will a great physical user interface. It’ll probably make a great companion to the LED/Switch MiniPiio SimpleIO we showed off a few months back. Of all the new boards I think this is my favourite :-)

The final new PCB, is MiniPiio PWM16. I think its name gives it away. It’s a hardware based 16-channel PWM add-on board using the popular PCA9685.

As always you’ll find them in our Tindie store in the next few days.

Two new Raspberry Pi add-on boards

April 29th, 2014 No comments

A new batch of PCB’s arrived today.

There were two new Raspberry Pi add-on boards in the box.

The first board is a 2-channel Type-K Thermocouple converter based on the MAX31855 chip.

The second board is RF Transceiver based of HopeRF popular RFM12B module.

I’ll plan to build them up in the next few days and if all goes well I’ll list them in our Tindie store.

RPi_MiniPiio_Thermocouple2_RFM12B_small

 

 

New Board – MiniPiio SimpleIO

April 14th, 2014 No comments

MiniPiio SimpleIO is just that, an add-on board with simple inputs and outputs. It features 8x LED’s and 8x tactile switches. The Pi’s GPIO4/17/18/22/23/24/25/27 are each connected to an LED and switch.

You have 8x signals you can mix and match with whatever combination of LED’s or switches your design needs. So if you need more indicators you could have say 6x LED’s and 2x switch inputs and like wise, if you need more inputs than outputs you could have 5x switch inputs and 3x LED outputs.

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You can find them at our store on Tindie.

Note: LED and Switches sharing the same GPIO so are not designed to used simultaneously.

Raspberry Pi RS485 Module

April 8th, 2014 No comments

The MiniPiio RS485 is a RS485 to TTL 3.3V converter board specifically designed to work with the Raspberry Pi.

It uses 3.3V components and is completely voltage compatible with the Raspberry Pi.

The board connects directly to the Raspberry Pi’s UART Rx and Tx to provide RS485 half-duplex communications.

The board uses the industry standard MAX3485* for signal conversion.

An industry standard 9-Way D Connector (Male) and a 3-W screw provides provides the serial connection to the outside world.

Pin-out (9W D):

Pin-5 = 0V Pin-8 = B (Data +) Pin-9 = A (Data -)

In addition, the GPIO signals can be used to control the MAX3485* DE and !RE as needed.

PIIO and MiniPIIO are modular electronic building block for the Raspberry Pi and may be used with our RPi Expander2.

*or Equivalent IC

You can find them on our Tindie store.


MiniPiio Thermocouple

April 6th, 2014 No comments

MiniPiio Thermocouple is a single channel temperature measurement add-on board using Type-K thermocouples.

The MAX31855 is a sophisticated thermocouple-to-digital converter. It features a built-in 14-bit analog-to-digital converter (ADC) for thermocouple measurement. In addition it also contains a cold-junction sensor for compensation temperature sensing and correction.

The MAX31855 resolves temperatures to 0.25°C. It allows readings as high as +1800°C and as low as -270°C and exhibits thermocouple accuracy of ±2°C for temperatures ranging from -200°C to +700°C for K-type thermocouples.

– Works with any K type thermocouple
– Temperature range = -200°C to +1350°C output
– Resolution 0.25 degree
– Accuracy is ±2°C
– Internal cold junction temperature reading
– SPI bus interface
– Two SPi Chips Selects (!CE0 and !CE1)

You can find it at our Tindie store

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A quick tutorial to using MiniPiio AIN4 4-ch Analog Board

March 28th, 2014 No comments

The latest version of raspi-config allows you to enable the SPI drivers without having to edit raspi-blacklist.conf file yourself.

In LXTerminal start raspi-config by type:

raspi-config

Select the advance menu option and chose enable SPI devices. Exit the menu and reboot your Pi.

We’ll program our example in Python, so we’ll start by downloading the SPIdev driver library.

We can use Python Installer to get install it:

sudo pip install spidev

A quick python example is shown below:

[code language=”python”]
#!/usr/bin/python

import spidev
import time

# ADC Channel
ADCCHAN = 1

# Open SPI, use Chip Select 0
spi = spidev.SpiDev()
spi.open(0,0)

while True:

adc = spi.xfer2([1,(8+ADCCHAN)<<4,0]) data = ((adc[1]&3) << 8) + adc[2] print ('ADC CH1 =', data) [/code] The MiniPIIO Uses a Microchip MCP3004 (or MCP3204) which are from the same ADC familily as the MCP3008 You can find the MiniPIIO AIN4 at our Tindie store:

MiniPiio_Expander2_DIO16_AIN4_small

 

New board – MiniPIIO Breakout!

March 21st, 2014 No comments

MiniPIIO Breakout! is our newest add-on board for the Raspberry Pi.

It breaks out (hence its name) all the Pi’s expansion I/O into four neat little groups.

UART is broken out into a 6-Way and 4-way pin header. The 6-Way is FTDI USB Cable compatable.

SPI is broken out into two 6-way headers, each with it’s own SPI chip select.

I2C is borken out into two 4-way headers.

GPIO is broken out into two 10-way headers. GPIO4/17/18/22/23/24/25/27 and 3.3V and 0V.

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You can buy it at our Tindie store here