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May
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Linear bargraph LED scale module KIT

Linear LED scale module with 12 LEDs.
Can be used as a voltmeter in a scale with independently adjustable limits in the range 0 to 5V (like 1V to 2V scale, 0V to 0.5V scale, etc).

Power supply: 8V to 12V
Graph: 12 red LEDs **, in dot or bar configuration
Graph orientation: top or side of the module
Input scale low limit: 0 to 5V (manually adjustable)
Input scale high limit: 0 to 5V (manually adjustable)
Dimensions after assembly: approx. 78.5x38.5x19 mm (LxDxH) (LEDs excluded)

** Want other colors? Tell us how many of what colors you want up to 12, in the comments at checkout. The available LED colors are: red, green and yellow.

Check our article series on linear bargraphs for applications, here, under Technical Articles.

More Details

What's included in the KIT:

1 x Resistor, 3.9K 1/4W 5%
12 x Resistor, 270 1/4W 5%
1 x Capacitor, electrolytic, 22uF
2 x Capacitor, ceramic, 100nF
12 x LED, red
1 x Diode, 1N4007
2 x Variable resistor, 10K
1 x Integrated Circuit, Voltage Regulator, LM7805
1 x Integrated Circuit, ED1001
1 x 20 pins IC socket for ED1001
1 x Connector, DC Power, 2.1mm or 2.5mm
1 x Connector, Male header of 3 pins
1 x Connector, Male header of 2 pins
1 x Jumper
1 x High quality PCB (Printed Circuit Board) with silkscreen and soldermask

Download: KIT Instructions and data (PDF, 4 pages)

Based on our EDChip ED1001; can be used as ED1001 eval board.

Constructing an electronics KIT is very fun but involves working with a soldering iron and therefore presents some risk. We assume you have a reasonable common sense and some basic experience! Feel free to contact us for further information, here.

Price: 17.95 €

ED1021 - I/O Expander with UART interface

ED1021 is an I/O expander fully controlled and configured through an UART interface. I/O expanders expand the number of pins available to a host system (typically, a microprocessor). This product includes a low profile 4.000 MHz crystal and pair of 22pF capacitors to easily put you up running.

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Highlights

4.5V to 5.5V power supply.
12 GPIOs.
Up to 40mA maximum current in each output except GPIO8 (up to a total device current of 175mA).
Most GPIOs can be an input to a 10bit ADC.
Simple interface to most PC serial ports.
Uses a common 4.000 MHz crystal.
Easy to use UART interface at 38400 bps.
One of a set of 4 GPIO pins can be used as an interrupt request (IRQ) pin.
High stability internal ADC voltage reference for precise readings.

Description
Each pin can be configured either as an input, input with pull-up, input to an internal 8 or 10-bit ADC (10 of the 12 GPIOs), push-pull output or disconnected. When a change happens in a GPIO configured as digital input, ED1021 can automatically send a notification to the host system through the UART interface or an IRQ line. The IRQ line can be configured to be any of the GPIO8-11 pins.

Example Application
Below is an example application in which a PC controls 2 LEDs, reads 4 pushbuttons and 3 slow changing analog signals and monitors a V+ voltage (to display a battery charge state).

Connection to the PC uses the COMx port. Most PC serial ports and USB-to-Serial converters will tolerate the lower voltage levels provided by ED1021. Some USB-to-Serial converters even use 5V TTL signals, which make them just perfect for interfacing with this I/O expander. The circuit must be powered up before connecting the serial port cable to the PC. (click the schematics for a bigger view)

Resources
Datasheet: Download
Windows PC graphical demo application: Download
You can use this application to control an ED1021 connected to a PC through a serial COM port. No installation nor administration rights needed.

Price: 4.00 €

This product has sold out.

BuzziT! KIT

This circuit is very similar to the simple, fun and easy to build tone generator circuit featured in our article Fun and easy to build buzzer circuit!.

Pitch: adjustable
Power Supply: 2.5V to 6V (2 to 4 AA or AAA batteries)
Dimensions after assembly: approx. 31x17x11 mm (LxDxH)

The KIT does not include the wires, batteries, battery holder nor speaker. This is a KIT, which means you get the parts and then need to assemble it yourself using a soldering iron.

More Details

What's included in the KIT:

1 x NPN transistor 2N3904
1 x PNP transistor 2N3906
1 x 100nF capacitor
1 x 1K 1/4W resistor
1 x 33K 1/4W resistor
1 x 1M horizontal adjustment variable resistor
1 x PCB (Printed circuit board)

Download: KIT Instructions and data (PDF, 2 pages)

Constructing an electronics KIT is very fun but involves working with a soldering iron and therefore presents some risk. We assume you have a reasonable common sense and some basic experience! Feel free to contact us for further information, here.

Price: 5.90 €

This product has sold out.

PWM Board with UART interface KIT

PWM controller board with UART interface, allowing to speed/direction control DC motors upto 1A, and 4 extra lower power devices such as LEDs (for dimming) and servos.
An excellent companion to a microcontroller based processing board such as the Arduino.

Power supply: 6V - 12V
Power channels:
-> 4, sharing 2 PWM generators
-> 1A max
-> 8 bit frequency and duty cycle resolution up to 200KHz
PWM channels:
-> 4, with 4 independent PWM generators
-> 40mA max each, 60mA max total
-> 7 bit frequency and duty cycle resolution up to 10KHz
Dimensions (mm): approx. 41x51x15 (WxDxH)

More Details

Power channels can be used to control small DC motors with speed control: 2 bidirectional, 4 unidirectional or 1 bidirectional and 2 unidirectional.

The PWM channels can be used for example to dim LEDs or control servo motors.

Additionally, each unused power driver allows to use one GPIO/ADC pin.

Available soon!

Luny Sound Delirium KIT

Welcome to the wonderful world of sound FX!
This KIT consists of a digital software synthesizer with 2 oscillators (LFO and HFO) which can be connected in Amplitude or Frequency modulation configurations. The oscillators feature several wave types, amplitude & frequency modulation, and others, through knobs.

More Details
Preliminary Highlights

6V to 9V power supply range.
1V max. output amplitude
LFO: 0.01..25Hz; 6 wave types, square duty cycle, frequency
HFO: 50..10000Hz; 6 wave types, frequency
Modulation: LFO optionally modulates HFO in Amplitude (AM) of Frequency (FM)
External input for optional AM

External signals also have a word to say. You can choose to amplitude modulate the output sound using an external signal. But that's not all; any knob can be replaced with any 0 to 5V signal source! Using this expansion facility you can turn this baby into several different instruments.

Below you can see the conceptual LSD's diagram (click it for a bigger view).

Available soon!

EDuino-B KIT

EDuino is a serial Arduino-compatible board, smaller, cheaper and easy to build at home.The main design goal that led us to EDuino was that it's expensive to buy a full-feature Arduino for every project.

More Details
EDuino is actually licensed under CC, and you can get all the information (including how to build your one at home) in our article EDuino - our vision of serial Arduino.

Download: KIT Instructions and data (PDF, 3 pages)

This KIT contains a single side tinned PCB and all components, including an ATmega328 with the Arduino bootloader, and requires assembly. The male pin headers are not included, get your own favorite connector (or solder wires directly to the PCB pads).

Constructing an electronics KIT is very fun but involves working with a soldering iron and therefore presents some risk. We assume you have a reasonable common sense and some basic experience! Feel free to contact us for further information, here.

Price: 9.95 € (estimate)

Available soon!

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