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کامپیوتر ODROID-W


 ODROID-Wیک ماژول محاسباتی کوچک است که بطور کامل با تمام نرم افزارهای موجود برای Raspberry-PI سازگار است. بدلیل اندازه کوچک بورد 60*36*7mm  از این بورد می توان در مکان های بسیاری از جمله دستگاه ها پوشیدنی، اینترنت اشیا و... استفاده کرد. این بورد ترکیبی از بورد رسپبری پای + مبدلADC با رزولوشن12بیت + ساعتRTC با پشتیبانی از باتری بک آپ + UPS شارژر باتری قابل شارژ به منظور استفاده در دستگاه ها قابل حمل و ابزارها پوشیدنی است. همچنین بر روی این بورد مبدلDC/DC Step-down & DC/DC Step-up  به منظور تامین تغذیه مناسب درنظر گرفته شده است. بر روی بورد نیز تعداد 32پین GPIO به منظور توسعه بورد و استفاده از امکانات درنظر گرفته شده است.


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ODROID-W is a miniature computing module which is fully compatible with all software available for the Raspberry-Pi.

The W stands for:
- Wearable device development
- Widely applicable Internet of Things (IoT) development
- Workable DIY electronics prototyping

 The ODROID-W measures a very small 60 x 36 x 7mm (2.4 x 1.4 x 0.3”). new features and improvements over the original Raspberry Pi:

- Li+ rechargeable battery charger and fuel gauge for portables, wearable and robots application
- Real Time Clock to keep accurate time without an Internet connection by just adding a coin battery
- 12-bit precision ADC to measure the dynamic voltage signals via two single-ended inputs
- DC/DC step-down converters for higher power efficiency
- DC/DC step-up converter for 5Volt rails (USB host and HDMI) from a Li-Polymer battery
- USB Host port can be placed on top or bottom as preferred
- DIY friendly 0.1inch/2.54mm pitch IO connector (up to 32 GPIO ports) for handy prototyping

ODROID-W = RPI + RTC + ADC + UPS + Battery gauge with significant Minimalism


In early 2014, we had an important project with our partner companies to help them to prototype a few wearable & IoT devices.

At that time, we considered using the ODROID-U3 as a base platform. The ODROID-U3 is much faster than the Raspberry Pi, but the power consumption of the U3 is not suitable for wearable devices like watches or necklaces.

We even considered using the Raspberry Pi itself due to the lower power consumption and nice Linux BSP support, but the PCB of the RPi was huge (much bigger than the ODROID-U3).

To create the smallest wearable accessory possible, we decided to make our own (tiny) version of a Raspberry Pi, which allows full use of many widely available Pi peripherals such the Pi Camera module connector and 26-pin GPIO port.

The HDMI port and SD slot were changed to micro- sized connectors, and the MIPI DSI port was removed due to limited PCB space.


- PCB Revision 0.1

The first sample PCB (rev 0.1) was designed on April 14, 2014, and had a few jumper wires.


- PCB Revision 0.2

The second run was designed on May 19, 2014, which corrected some of the electronics designs and added an eMMC module socket for test purposes. Note that the eMMC is not much faster than SD card due to the slow eMMC host speed in the SoC. We could see only ~10% improvement.


- PCB Revision 0.3

There is no big different from Revision 0.2. It is for the mass production.




ProcessorBroadcom BCM2835 ARM11 700Mhz
memorySamsung 4Gbit (512MB) LPDDR2 SDRAM
PMICRicoh RC5T619 includes DCDCs, LDOs, ADCs, RTC, Battery charger and Fuel gauge
DCDCTI TPS61259 is 5Volt step-up DCDC for USB host and HDMI block
Video OutputHDMI type-D (Micro-HDMI)
USBHigh-speed USB 2.0 host
GPIO connectorsRPi compatible 13x2-pin header on the top side as well as bottom side for 2-way stacking
20+6 pin header for additional GPIO/ADC/Power/USB connection
Total 32 GPIOs and 2 ADCs are available.
Camera connector15pin MIPI-CSI2 (Pi Camera module compatible)
Memory card slotMicro-SD (T-Flash)
PowerMicro-USB socket for 5Volt input
Li-Polymer battery connector (Molex 53398-0271)
RTC powerBackup battery connector (Molex 53398-0271)
Dimensions60 x 36 mm
Weight8 gram
Raspberry Pi or RPi is a trade mark of Raspberry Pi Foundation.

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