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Circuit ATmega USBasp DIP USB ISP/TPI programmer for Atmel AVR microcontroller. USBasp – USB ISP/TPI programmer for Atmel AVR microcontrollers, based on the design by Thomas Fischl. More information can be found at https://www.fischl.de/usbasp/. Windows users may need to install a driver. Of course, this is not necessary for linux and Mac users. Close SELFPROG and TGTPWR jumper when uploading firmware. If you are burning a fresh microcontroller, close the Slow Serial Clock jumper (SLOWCLK) since they are factory programmed for an internal 1MHz oscillator. This is not necessary if the improved firmware by nerdralph (https://github.com/nerdralph/usbasp) is used. Close Taget Power jumper (TGTPWR) to power the target device from the USBasp.
USBasp is a USB in-circuit programmer for Atmel AVR controllers. It simply consists of an ATMega88 or an ATMega8 and a couple of passive components. The programmer uses a firmware-only USB driver, no special USB controller is needed.
Schematic USBasp DIP AVR USB ISP TPI programmer
Features Circuit ATmega USBasp DIP AVR USB ISP/TPI programmer:
- Works under multiple platforms. Linux, Mac OS X and Windows are tested.
- No special controllers or smd components are needed.
- Programming speed is up to 5kBytes/sec.
- SCK option to support targets with low clock speed (< 1,5MHz).
- Planned: serial interface to target (e.g. for debugging).
Software
- AVRDUDE supports USBasp since version 5.2.
- BASCOM-AVR supports USBasp since version 1.11.9.6.
- Khazama AVR Programmer is a Windows XP/Vista GUI application for USBasp and avrdude.
- eXtreme Burner – AVR is a Windows GUI Software for USBasp based USB AVR programmers.
Bom Circuit ATmega USBasp DIP AVR USB ISP/TPI programmer
| Name | Designator | Footprint | Quantity |
| Resistors 1/4W | |||
| 10k | R1 | Brown, black, orange, gold | 1 |
| 1k | R2,R3 | Brown, black, red, gold | 2 |
| 68R | R4, R5 | Blue, gray, black, gold | 1 |
| 2k2 | R6 | Red, red, red, gold | 1 |
| Capacitors | |||
| 100n | C1 | Ceramic capacitor | 1 |
| 100u | C2 | Electrolytic capacitor | 1 |
| 22p | C4,C3 | Ceramic capacitor | 2 |
| Semiconductors | |||
| 3V6 | D1,D2 | Zener diode | 2 |
| ATMEGA8A-PU | U1 | DIP28 – Microcontroller | 1 |
| BUSY | LED1 | Led 3 mm red | 1 |
| USB | LED2 | Led 3 mm green | 1 |
| Miscellaneous | |||
| USB-B-Female | USB | USB-M-49 – USB connector type B | 1 |
| 12MHz | XTAL1 | HC-49S – Crystal | 1 |
| SLOWCLK | JP3 | HEADER_2×1 | 1 |
| TGTPWR | JP1 | HEADER_2×1 | 1 |
| SELFPROG | JP2 | HEADER_2×1 | 1 |
| PROG | ICSP | HDR-IDC-2.54-2X3P – ICSP connector | 1 |
