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What are the features of the OLIMEX RP2350PC?
The features of the OLIMEX RP2350PC are:
• RP2350B SOC with easy to load new firmware via drag and drop virtual drive
• 520 KB on-chip SRAM
• 16MB SPI Flash
• 8MB of PSRAM
• DVI/HDMI output
• USB hub with x4 USB2.0 hosts which can be used to connect to keyboard, mouse, USB Flash, USB Gamepads etc
• Stereo Audio codec
• Stereo Amplifier
• Audio 3.5mm connector Line In
• Audio 3.5mm connector for Headphones
• JST2.0 connectors for Left and Right speakers
• USB-C connector for power supply
• USB-C connector for programming
• Two UEXT connectors with I2C, UART and SPI for connecting to external boards
• Power switch
• Reset and Boot buttons
• four mounting holes 3.3mm diameter
• Lipo battery charger which allow the board to run from LiPo battery.
• Lipo JST2.0 mm connector
• Dimension 85x65mm
What important safety notice should be followed when handling the OLIMEX RP2350PC?
If the OLIMEX RP2350PC is not mounted in a box, be careful not to place it on a metal surface, nor drop metal objects on top of the PCB. This will lead to damage.
What are the order codes for the OLIMEX RP2350PC and its compatible accessories?
| Order Code | Description |
|---|---|
| RP2350pc | RP2350 all in one computer with 4 USB hosts and HDMI display |
| USB-KEYBOARD-PS2 | Keyboard which is compatible with RP2350pc |
| USB-GAMEPAD | USB Gamepad |
| USB-WIRELESS-GAMEPAD | USB Wireless Gamepad |
| USB-CABLE-AM-USB3-C | High speed, High current cable for power supply and programming |
| CABLE-HDMI-50CM | HDMI cable |
| UEXT modules | many UEXT modules which can connect to Neo6502 UEXT connector |
| BATTERY-LiPo1400mAh | LiPo battery compatible with RP2350pc |
What are the main components and connectors on the OLIMEX RP2350PC layout?
The main labeled components on the OLIMEX RP2350PC board are:
• Power USB-C
• HDMI
• Audio Line In
• Audio Headphones
• Left Speaker connector
• Right Speaker connector
• UEXT1 connector
• UEXT2 connector
• Boot button
• SD card slot
• USB 3/4 ports
• USB 1/2 ports
• USB-C programming port
• ON-OFF switch
• LiPo battery connector
What is the UEXT connector on the OLIMEX RP2350PC?
The UEXT connector on the OLIMEX RP2350PC stands for Universal EXTension connector. It provides +3.3V, GND, I2C, SPI, and UART signals for connecting external modules and sensors.
The original UEXT connector is a 0.1” (2.54mm) step boxed plastic connector, and all signals are at 3.3V levels.
What is the detailed pinout for the UEXT1 connector on the OLIMEX RP2350PC?
| Pin | Signal | Pin | Signal |
|---|---|---|---|
| 1 | +3.3V | 2 | GND |
| 3 | GPIO0\UART0_TX | 4 | GPIO1\UART0_RX |
| 5 | GPIO3\I2C1_SCL | 6 | GPIO2\I2C1_SDA |
| 7 | GPIO4\SPI0_RX(MISO) | 8 | GPIO7\SPI0_TX(MOSI) |
| 9 | GPIO6\SPI0_SCK(SCK) | 10 | GPIO5\SPI0_CSn(CS#) |
What is the detailed pinout for the UEXT2 connector on the OLIMEX RP2350PC?
| Pin | Signal | Pin | Signal |
|---|---|---|---|
| 1 | +3.3V | 2 | GND |
| 3 | GPIO38\UART1_TX | 4 | GPIO39\UART1_RX |
| 5 | GPIO37\I2C0_SCL | 6 | GPIO36\I2C0_SDA |
| 7 | GPIO44\SPI1_RX | 8 | GPIO43\SPI1_TX |
| 9 | GPIO42\SPI1_SCK | 10 | GPIO45\SPI1_CSn |
How is the SD-card interface on the OLIMEX RP2350PC configured?
By default, the SD/MMC interface on the OLIMEX RP2350PC is connected in SPI Mode. Depending on the software configuration, it can also be used in 1-bit MMC Data Mode, which provides more flexibility. A Card Detect option has also been added. The pin connections include:
• GPIO9\SPI1_CSn connected to SD_DATO
• GPIO11\SPI1_TX connected to SD_CMD
• GPIO10\SPI1_SCK connected to SD_CLK
• GPIO41\ADC1 connected to SD_CD#
• GPIO24\SPI1_RX connected to SD_DATO
What is the function of the USB-C programming connector on the OLIMEX RP2350PC?
The USB-C programming connector automatically disables the USB-HUB. To use it for programming, press and hold the boot button, insert a USB-C cable into the programming port, and the OLIMEX RP2350PC will enter bootloader mode and appear as a disk on your computer.
What software and development kits can be used with the OLIMEX RP2350PC?
The OLIMEX RP2350PC can be programmed with RaspberryPi C-SDK or MicroPython SDK.
For retro computing fans, the Reload emulator written by Veselin Sladkov is planned to support the OLIMEX RP2350PC and will emulate systems like Apple ][, Apple][e, Oric Atmos, Pravetz 82, and Pravetz 8D.
Additionally, an RP2350pc API is in development to allow compilers and operating systems to be created with a unified API (BIOS).
How do I program the OLIMEX RP2350PC?
The OLIMEX RP2350PC firmware is a UF2 file. To program the board with .uf2 files, you will need a USB-A to USB-C cable. Follow these steps:
1. Disconnect the power supply from the main power USB-C connector (USB-PWR1) and connect it to the programming USB-C connector (USB-PGM1).
2. Press and hold the BOOT1 button, then switch on the power with the PWR_ON/OFF1 switch. After switching on the power, you can release the BOOT1 button.
3. You will see a new disk drive named RPI-RP2 appear on your computer.
4. Copy the .uf2 file to this drive. Once it’s copied, the drive will automatically disappear.
5. Switch OFF the power using the PWR_ON/OFF1 switch.
6. Disconnect the USB-C cable from the programming port (USB-PGM1) and connect it back to the main power port (USB-PWR1).
7. Switch ON the power supply.
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