I modified the PIC18F2550 Tiny PIC Bootloader assembly file so I could use a 20MHz crystal/resonator at 115,200 baud (the modified bootloader can be found at the bottom of the page). The microcontroller used is a Microchip PIC18F2550. The maximum recommended impedance for analog sources is 2.5 kÎ©” (PIC18F2550, pp.

Please note that “The source impedance affects the offset voltage at the analog input (due to pin leakage current). The analog input for the oscilloscope is connected to the A0 pin, which is configured to be an analog input. The part numbers for the components are linked to websites for data and more information when available. All of the sections and their components are described and discussed below. Each section of the circuit is labeled in the schematic. The source and firmware for the circuit can be found at the bottom of the page. Using HID means that this oscilloscope does not require drivers (only the oscilloscope software). During the development of this project, I learned quite a bit about USB HID communication, which allows me to quickly and effectively communicate with the desktop computer. After creating an oscilloscope using a PIC12F675, I wanted to create a simple and effective USB oscilloscope using the higher performance PIC18F2550. This is a project that I’ve been planning on putting together for a long time. As an Amazon Associate I earn from qualifying purchases.

Atmel pro chip designer sayantan