We just complete MOD-RS485-ISO galvanically isolated RS485 to UEXT module which allow all our development boards with UEXT connector to interface RS485 products, our old MOD-RS485 module was without galvanic insulation but as RS485 is used a lot in industrial and noisy environment we decided to release isolated version too.
The preliminary schematic of MOD-RD485-ISO is here:
note that after the prototyping this schematic may have changes, we add PIC16F1503 microcontroller to handle the UEXT communication and addressing by I2C.
For those who have not spoted yet PIC16F1503 is cool small new microcontroller from Microchip which cost USD 0.80 in small quatities!
It have 2K Flash and 12 GPIOs, 4 PWMs, ADC, DAC (5bit) and configurable logic for the ports!
PIC-H1503 is small header board we designed to may play with PIC16F1503 and USB-PWR is small module which powers BreadBoard bus through USB with selectable 3.3V-5V
both USB-PWR and PIC-H1503 board will be ready for sale in March.
USB-PWR will cost EUR 1.95
PIC-H1503 will cost EUR 1.95