CircuitGizmos provides products for sale that are designed and produced by the creative minds at CircuitGizmos, USBmicro, Amber Waves Electronics, and other fun sources of clever engineering.
Here you can purchase the USBmicro U401 and U421 USB interface that has support for SPI, LCD, 1-wire, stepper motor control, input, and output.
CircuitGizmos sells the Color Maximite 2 Computer in the form of the CG RetroMax. The Maximite runs BASIC and supports a display on VGA. A keyboard can interface to the Maximite as well as I2C, SPI, and serial devices.
The Sensor.Engine:Micro is a great way to augment a solderless breadboard and interface to things like the small boards in the 37 sensor kits. This is an easily programmed STEM controller.
CircuitGizmos also sells the unique USBPIR USB motion detection module and home automation and security software made to work with these devices.
USB to serial +Pic32prog programmer interface
This is a USB-to-serial (5V or 3.3V levels) interface chip that also has the ability to program a PIC32 using PIC32PROG software.
Example circuit from Robert Rozee:
USB/UART mode:
When first powered up, the CG1455 is in USB/UART mode and acts as a simple USB to 5.0/3.3V UART interface.To enter PIC32 programmer mode, press the program select switch briefly, the LED will light.
Pressing the program select switch for greater than 2 seconds will reset the microcontroller on the programming interface but not enter programmer mode. The LED will flash briefly after 2 seconds to indicate success. A "break" command sent from the terminal emulator can also be used to restart the microcontroller on the programming interface (Alt+B in Teraterm).
Programmer mode:
Pressing the program select switch for greater than 2 seconds will exit programmer mode (to go back to USB/UART mode). The LED will go out after 2 seconds to indicate success and when the switch is released the microcontroller on the programming interface will be reset and will switch back to USB/UART mode