• Works with 3.3V or 5V logic• Control via I2C• For chips that have 3.4 Mbps Fast Mode I2C (Arduino's don't) you can update the Vout at ~200 KHz• Has an EEPROM so it can store an output voltage• Please Click here for the Datasheet• Click here to view the detailed tutorial Your microcontroller probably has an ADC (analogue -> digital converter) but does it have a DAC (digital -> analog converter)??? Now it can! This breakout board features the easy-to-use MCP4725 12-bit DAC. Control it via I2C & send it the value you want it to output, & the VOUT pin will have it. Great for audio / analogue projects, such as when you can't use PWM but need a sine wave or adjustable bias point. We break out the ADDR pin so you can connect two of these DACs on one I2C bus, just tie the ADDR pin of one high to keep it from conflicting. Also included is a 6-pin header, for use in a breadboard. Works with both 3.3V or 5V logic. Some nice extras with this chip: for chips that have 3.4 Mbps Fast Mode I2C (Arduino's don't) you can update the Vout at ~200 KHz. There's an EEPROM so if you write the output voltage, you can 'store it' so if the device is power cycled it will restore that voltage. The output voltage is rail-to-rail & proportional to the power pin so if you run it from 3.3V, the output range is 0-3.3V. If you run it from 5V the output range is 0-5V. ...

• Can be configured as 4 single-ended input channels, or two differential channels•
Includes: a programmable gain amplifier,
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•I2C-controlled PWM driver with a built in clock• Works with both Raspberry Pi & Arduino•6 address select pins (up to 62 of these on a single I2C bus
- that's 992 outputs!)• Adjustable frequency PWM up to about 1.6 KHz•12-bit output resolution (about 4us resolution at 60 Hz update rate for servos)• Configurable push-pull or open-drain output• Output enable pin• Click here to find the detailed tutorial guide for Arduino• And to view the Arduino livrary please click here You want to make a cool robot, maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of LEDs with precise PWM output. Then you realize that your microcontroller has a limited number of PWM outputs! What now? You could give up OR you could just get this handy PWM & Servo driver breakout. It's an i 2c-controlled PWM driver with a built in clock. That means that, unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running! It is 5V compliant, which means you can control it from a 3.3V microcontroller & still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages). 6 address select pins so you can wire up to 62 of these on a single i 2c bus, a total of 992 outputs
- that's a lot of servos or LEDs. Adjustable frequency PWM up to about 1.6 KHz. 12-bit resolution for each output
- for servos, that means about 4us resolution at 60 Hz update rate. Configurable push-pull or open-drain output. Output enable pin to quickly disable all the outputs


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• There's an I2C-controlled PWM driver with a built in clock• You do not need to continuously send it signal tying up your microcontroller, its completely free running!• It is 5V compliant, which means you can control it from a 3.3V Arduino & still safely drive up to 6V outputs•6 address select pins so you can stack up to 62 of these on a single i 2c bus, a total of 992 outputs
- that's a lot of servos or LEDs• Adjustable frequency PWM up to about 1.6 KHz•12-bit resolution for each output
- for servos, that means about 4us resolution at 60 Hz update rate• Configurable push-pull or open-drain output• Terminal block for power input (or you can use the 0.1"" breakouts on the side)• Reverse polarity protection on the terminal block input• Green & red power-good LEDs•3 pin connectors in groups of 4 so you can plug in 16 servos at once•A spot to place a big capacitor on the V+ line (in case you need it)•220 ohm series resistors on all the output lines to protect them, & to make driving LEDs trivial• Solder jumpers for the 6 address select pins•A lot of extra space remaining? Let's turn it into a prototyping area. You get a 5x 20 proto area for any extra wiring you'd like to add• Click here to view the detailed tutorial guide You want to make a cool Arduino robot, maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of LEDs with precise PWM output. Then you realize that the Arduino has only a few PWM outputs, & maybe those outputs are conflicting with another shield! What now? You could give up OR you could just get our handy PWM & Servo driver shield. It's just like our popular PWM/ Servo Breakout but now Arduino-ready & works with any Arduino that uses shields: Uno, Leo, Mega, ADK, its all good. This product comes with a fully tested & assembled shield as well as 4 pieces of 3x 4 male straight header (for servo/LED plugs), a 2-pin terminal block (for power) & a stick of 0.1" header so you can plug into an Arduino. A little light soldering will be required to assemble & customize the board by attaching the desired headers but it is a 15 minute task that even a beginner can do.

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•2.2" diagonal true TFT LCD display has 320x 240 colour pixels• The TFT driver can display full 18-bit colour (262, 144 shades!)• Ultra-low-dropout 3.3V regulator & a 3/5V level shifter so you can use it with 3.3V or 5V power & logic• Comes with a micro SD card holder so you can easily load full colour bitmaps from a FAT16/FAT32 formatted micro SD card• Please click here for the detailed graphics library This lovely little display breakout is the best way to add a small, colourful & bright display to any project. Since the display uses 4-wire SPI to communicate & has its own pixel-addressable frame buffer, it can be used with every kind of microcontroller. Even a very small one with low memory & few pins available! The 2.2" display has 320x 240 colour pixels. Unlike the low cost " Nokia 6110" & similar LCD displays, which are CSTN type & thus have poor colour & slow refresh, this display is a true TFT! The TFT driver (ILI9340) can display full 18-bit colour (262, 144 shades!). & the LCD will always come with the same driver chip so there's no worries that your code will not work from one to the other. The breakout has the TFT display soldered on (it uses a delicate flex-circuit connector) as well as a ultra-low-dropout 3.3V regulator & a 3/5V level shifter so you can use it with 3.3V or 5V power & logic. We also had a little space so we placed a micro SD card holder so you can easily load full colour bitmaps from a FAT16/FAT32 formatted micro SD card. ...

•4 BSS138 FETs with 10K pullups• Works down to 1.8V on the low side, up to 10V on the high side• Designed for I2C, but also works for SPI, TTL Serial, & any other digital interface both uni-directional & bidirectional• Comes with a fully assembled & tested PCB•4 full bidirectional converter lines as well as 2 pieces of 6-pin header you can solder on to plug into a breadboard or perfboard• Click here to check out the BSS138 Datasheet• Click here to see the NXP App note explaining how it works Because the Arduino (and Basic Stamp) are 5V devices, & most modern sensors, displays, flash cards & modes are 3.3V-only, many makers find that they need to perform level shifting/conversion to protect the 3.3V device from 5V. This level shifter board combines the ease-of-use of the bi-directional TXB0108 with an I2C-compatible FET design following NXP's app note. ...

• Pin-out clearly labelled on the board• Comes with a quality mini PCB, a 2x 3 pin header & a small stick of 0.1" header• Plugs into any breadboard for neat wiring• Requires some light soldering to attach the headers A handy little breakout board for AVR from Adafruit! ...

•CAP188 has support for both I2C & SPI, so it easy to use with any microcontroller• If using I2C, you can select one of 5 addresses, for a total of 40 capacitive touch pads on one I2C 2-wire bus• Using this chip is a lot easier than doing the capacitive sensing with analog inputs: it handles all the filtering for you & can be configured for more/less sensitivity Add lots of touch sensors to your next microcontroller project with this easy-to-use 8-channel capacitive touch sensor breakout board, starring the CAP1188. This chip can handle up to 8 individual touch pads, & has a very nice feature that makes it stand out for us: it will light up the 8 onboard LEDs when the matching touch sensor fires to help you debug your sensor setup.CAP188 has support for both I2C & SPI, so it easy to use with any microcontroller. If using I2C, you can select one of 5 addresses, for a total of 40 capacitive touch pads on one I2C 2-wire bus. Using this chip is a lot easier than doing the capacitive sensing with analogue inputs: it handles all the filtering for you & can be configured for more/less sensitivity. Comes with a fully assembled board, & a stick of 0.1"" header so you can plug it into a breadboard. For contacts, we suggest using copper foil, then solder a wire that connects from the foil pad to the breakout. Getting started is a breeze with the Adafruit Arduino library & tutorial. You'll be up & running in a few minutes, & if you are using another microcontroller, its easy to port the code. The CAP1188 datasheet can be found here ...

• Easy to use analog output• Easily convert the voltage to temperature• This is a very simple sensor to use• Temp range with 5V power: -250°C to +750°C output (0 to 5VDC)• Temp range with 3.3V power: -250°C to +410°C output (0 to 3.3VDC) Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. This is a very simple sensor to use, & if your microcontroller has analog input capability, you'll be ready to go really fast! The AD8495 K-type thermocouple amplifier from Analogue Devices is so easy to use, the whole thing is documented on the back of the tiny PCB. Power the board with 3-18VDC & measure the output voltage on the OUT pin. You can easily convert the voltage to temperature with the following equation: Temperature = (Vout
- 1.25) / 0.005 V. So for example, if the voltage is 1.5VDC, the temperature is (1.5
- 1.25) / 0.005 = 60°C Each order comes with a 2 pin terminal block (for connecting to the thermocouple), a fully assembled PCB with the AD8495 + TLVH125 precision voltage reference, pin header (to plug into any breadboard or perfboard) & a 1m K type thermocouple with glass over-braiding. Not for use with any other kind of thermocouple, K type only!

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• Built in clock which can multiplex the display• Constant-current drivers for ultra-bright, consistent colour•1/16 step display dimming• All via a simple I2C interface• The backpack comes with address-selection jumpers so you can connect up to eight of these bar-graphs on a single I2C bus• You can also mix-&-match the bar-graph breakout with our other types of I2C LED backpacks• And to view the library please click here to help you get started!• To see Adafruits tutorial showing how to solder, wire & control the display please click here What's better than a single LED? Lots of LEDs! A fun way to make a small linear display is to use two 12-bar Bi-colour bar-graphs. However, this LED bargraph is 'multiplexed'
- so to control all the 48 LEDs you need a lot of pins. There are driver chips like the MAX7219 that can help control a bar-graph/matrix for you but there's a lot of wiring to set up & they take up a ton of space. Much like our 8x 8 & 7-segment backpacks, this backpack pairs perfectly with our bar-graphs & manages all the LED control & multiplexing. The backpack uses a driver chip that does all the heavy lifting for you: It has a built in clock so it can multiplex the display. It uses constant-current drivers for ultra-bright, consistent colour, 1/16 step display dimming, all via a simple I2C interface. The backpack comes with address-selection jumpers so you can connect up to eight of these bar-graphs on a single I2C bus. You can also mix-&-match the bar-graph breakout with our other types of I2C LED backpacks.
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