[Edit - pricing added, see below]
We just started assembling the New Bobuino2!
- Atmega1284P -16 MHz, 128K flash, 16K SRAM, 4K EEPROM, Dual Hardware Serial ports, 32 IO
- Option: Onboard USB/Serial with FTDI Module MIKROE-483
- Option: Offboard USB/Serial with FTDI Basic header
- MAX3232 RS232 driver for 2nd port
- DS1307 RTC with 32.786 KHz crystal and CR2032 battery backup
- SD card socket with 74HC4050 for 5V to 3.3V signal buffers
- 74HC125 for SD card Dout buffering onto SPI bus
- unused 74HC4050 & 74HC125 buffers are brought to headers
- 5V and 3.3V regulators
- jumper selectable power - USB or 5V regulator
- jumper selectable DTR to reset
- Barrel jack and reverse polarity protection diode
Changes from original Bobuino:
- each IO port is duplicated so you can plug in a shield and still access the signal for other uses - and expansion headers are all lined up on 0.1"pitch for easy shield making.
- each IO port has +5/Gnd next to it for connecting potentiometers, sensors, switches, etc.
- each port is brought to pads for 3.5mm screw terminals
- two sets of pins are set up for I2C breakout with power, Gnd in addition to I2C near Aref
- protoboard area for 315/433 MHz Tx/Rx modules, nrf24L01+ module, or a 20 pin DIP.
So the idea was to add in lots of flexibility while replacing the difficult to solder FT232RL chip (for us, anyway) with USB/Serial modules.
Our plan is to offer the board 3 ways:
- SMD components mounted only with all thru hole components as a kit to assemble
- SMD and thru-hole components mounted less any USB/Serial adapter
- SMD and thru-hole components mounted with MIKROE-483 installed (as shown with mini-USB connector)
- SMD and thru-hole components mounted with right-angle header for FTDI Basic (as shown with micro-USB connector)
And a set of screw terminals as a final option. I'll install a set for pictures tomorrow.
The boards we made are missing the 5v regulator - I managed to order 8-pin SOIC and not the DPAK I wanted, so it will be a few more days before we can ship. I've got Vin jumered to 5V for now to bring 5V in via the barrel jack.
I have bootloaded and installed Blink with an added serial message to check 4 boards out so for under USB power.
20 sets will be ready over the next few days - 6 or 7 are spoken for already.
I have pricing ready too.
Assembled board with no FTDI components: $69.50
Assembled board with right angle header & FTDI Basic with micro-USB connector: $76.50
Assembled board with MIKROE483 FTDI module mounted on board: $78
Set of 3.5 pitch screw terminals: Add $5.35
Shipping via USPS for up to 4 boards: $5.35
Paypal fee: add 4% to the total.
International: please contact as rates vary by country. Generally ~$24 for tracked, insured USPS shipping for up to 4 boards.
Here's pics to start:
http://www.crossroadsfencing.com/BobuinoRev17/index.html
