|Input Voltage (recommended)
|Input Voltage (limits)
|Digital I/O Pins
||14 (of which 6 provide PWM output)
|Analog Input Pins
|DC Current per I/O Pin
|DC Current for 3.3V Pin
||16 KB (of which 2 KB used by bootloader)
- Inherits all of Arduino Diecimila's features.
- Compatible to Diecimila's pin layout, screw hole and dimensions.
- Evolved with SMD components
- Improved on extensibility and convenience.
What are the changes?
- Duplicate digital IO to 100mil grid for prototype board compatibility.
- Shrink componets height below female headers.
- Easier access to buttons and switches.
- Change Type-B USB port to Mini USB.
- Replace 3.5mm DC power Jack to battery 2 Pin plug.
- Reset and power indicator near RST button.
- Auto-reset selection.
- 3.3V Operating Voltage selection.
- Pin out UART for FTDI232 bit-bang operation.
- Pin out 2 extra ADC.
- Optional capacitor for improving 3.3V output performance.
- Re-route PCB
- Pin out for I2C and sensors
1. Duplicate digital IO to 100mil grid for prototype board compatibility.
Adding an second row of header align to standard 100mil grid, so it will be compatible both to existing shield and to a cheap 100mil grid prototype board. By default, the traditional IO is soldered instead or new headers, and you may add the new header yourself.
2. Shrink componets height below female headers.
Seeeduino is made as flat as possible, even the crystals are SMD version. So we may put your soldered prototype board onto it with less worry.
3. Easier access to buttons and switches.
All buttons or switches are moved nearer to the edges, so we may reach them easier under the shield or from the wire forests.
4. Change Type-B USB port to Mini USB.
Consideration for dimensions.
5. Replace 3.5mm DC power Jack to battery 2 Pin plug.
Soldering the 3.5mm DC power jack is usually the most difficult part, and we think it's too giant. Maybe a battery pack is more convenient than power adapters? Don't worry about abandoning your 12V adapter, we have a simple convertor.
6. Reset and power indicator near RST button.
We use one LED for power indicator and the other for reset (it will also lid when downloading programs).
7. Auto-reset selection.
Auto-reset is a great feature loved by many. But sometimes we would also like to disable it in production-like mode.
8. 3.3V Operating Voltage selection.
The Vcc could be selected by a switch, for making life easier dealing 3.3v devices.
9. Pin out UART for FTDI232 bit-bang operation.
At least you can burn bootloader without an ISP cable now (Plz refer to Kimio's detail tutor: http://www.geocities.jp/arduino_diecimila/bootloader/index_en.html)
10. Pin out 2 extra ADC.
Why not? There are spaces :)
11. Pin out for I2C and sensors.
Easier connection to I2C and sensors by a bended femail header.
12. Optional capacitor for improving 3.3V output performance.
This is just another trial, we found in the FTDI manual about the capacitor used for improve 3.3v output performance. Although many Arduino, Freeduino, and other -duinos have proven it's just optional, we deciede to keep an option to check the difference.
13. ReRoute PCB
SMD version Atmega168 give us more space to route, so we carefully rearranged them for us to see the flow more clearly.
Please visit the supporing thread >>here
for suggestions on next revision.
What's new for v1.1?
- Fixed bug - unnessesary via on Pin4 wire.
- Fixed bug - Lable mistakenly covered by switches.
- Added I2C and sensor port.
- Added an 100uF capacitor for vcc switch.
- Grouped new 100mil grid pins.
- Replaced reset buttons with metal ones.
- Rearranged texts and lables for clearer indications.
License & Credit
This is the first open source board from our studio, we are proud to name it seeeduino. However, it is never going to be built without the great community. Thanks for everybody interested, offered suggestions, guidance or lift their concerns. Original Link here
is licensed under a Creative Commons Attribution 3.0 Unported License
. Based on a work at www.arduino.cc