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The new USB Tester Backback 2.0 brings many new features to the already very useful tool. We have worked hard over the recent months to bring most of the many requested features.。The USB Tester makes it easy to monitor the current and voltage of any USB device. It is inserted inline between your USB device and your power source or computer. This allows you to make sure you are getting a true 5V and to read how much power your projectdevice is using. For example、you can check which charger/cable allows your phone to charge the fastest. The base can be used with a Digital Multi Meter or with the Backpack、you can see the readout directly on the display. The default mode shows a graph of current usage、with the button cycling through the different modes.。The OLED Backpack can connect to a computer either using the Java app or the wizkers.io Chrome app. Both can graph and log the data which can be export as a CSV file. Wizkers is easier to setup and can handle firmware updates.。Features：Micro USB。Button Location on the front left。128x64 OLED Display。Voltage monitoring of the USB Data lines。Easier access to almost all the extra GPIO's。Separated voltage test points(Easier to attach test clips and avoid misplacing jumper)。Standard Dual Banana spacing 0.75in。Standard test probe sized test points。Firmware Features：Peaks。mWh and mAh tracking。Bar Graph of volts、watts and current。JSON for serial communications。Java App：Uses JSON over serial。Save as CSV。View max、min、avg on each graph。Specification：OLED。.96in。128x64。SPI。Supply：4.5v-5.5v。I/O：3.2v-5.5。8 Pin。PCB：26.7mm×25.4mm。Monochrome(WHITE)。Display Mode：Passive Matrix。Drive Duty：1/64 Duty。Active Area：21.744×10.864(mm)。Pixel Size：0.154×0.154(mm)。Pixel Pitch：0.17×0.17(mm)。2.0mm pitch(Might be breadboardable if you bend the pins out)(same pitch as Xbee)

Espruino is a small computer that anyone can use to control things around them. Its JavaScript interpreter gives you instant feedback so that you can experiment and develop whatever your level of experience. Even if you've never written code before、you can still use the graphical code editor to write programs without typing a single word!。Features：Works on Windows、Linux、MacOS and Android(via Bluetooth or USB OTG)。Less than half the size of a business card just 54mm×41mm。Using the popular JavaScript language、Espruino supports Strings、Maps、Objects、and Dynamic Arrays right out of the box!。72Mhz ARM microcontroller with 256KB of Flash memory and 48KB of RAM。Micro USB connector、Micro SD card connector、and a JST Battery connector with a wide input voltage range of 3.6v to 15v。Red、Green and Blue LEDs、with 2 pushbuttons(one of which is reset by default)。Solder an HC-05 Bluetooth module(not included)directly onto the board and program and debug Espruino wirelessly!。44 GPIO pins on a 0.1''pin spacing、with 26 PWM pins、16 ADC pins、5 USARTs、3 SPI、2 I2C and 2 DACs。Power Consumption：35mA run、12mA sleep、<0.05mA in deep sleep。Prototype area which can be used for servo headers、wireless modules and SOIC surface mount parts such as motor drivers。Built in drivers for the TI CC3000 WiFi and WIZnet W5500 Ethernet modules(not included)、as well as a graphics library with vector font Open Source software and hardware。Espruino Website with full documentation、many tutorials、and an active forum。CE and RoHS Compliant。On-chip RTC with external 32kHz Oscillato

The Gameduino 2 turns your Arduino into a hand-held modern gaming system. Touch control、a 3-axis accelerometer、microSD storage for game assets、headphone audio output、and all-new eye-popping graphics on its bright 4.3 inch screen.。Audio output is available on the amplified headphone jack、and provides a range of built-in sounds as well as sample playback at up to 48 kHz.。The Gameduino 2 software library is documented extensively in the book、available for free download.。Features。Complete hand-held game module：supply an MCU(Arduino/Rasberry Pi)and power。Arduino shield form-factor。Bright 4.3"(diagonal)480x272 screen、262144 colors。Powered by latest FT800 Embedded Video Engine(EVE)。Resistive touch-screen input。3-axis accelerometer for tilt gaming。microSD storage slot。Amplified audio via headphone socket。Software and book available for download。Important。Note this unit does not include a microSD card.。Specification。Arduino Uno shield form-factor、uses SPI bus on pins 13-11. Voltage levels 3.3-5v。3.3-5V power supply required。3-axis analog accelerometer。4.3"(diagonal)TFT with adjustable backlight。3.5mm audio jack。microSD card socket。Weight：85g。Size：105x75x20 mm