I currently have Attiny85 , attiny45 , atmega328 , 8051 MCU . I want to program them in a chipless method ( which doesn't use any intermediate chips to burn program or bootloader ) - this is like a chicken egg problem
I have a VGA connector cable ( 3 row db15 ) , i have pcb perfboard , breadboard, and passive components (capacitors , transistors resistors ) , 12 volt battery , wires etc .
On my MACBOOK AIR i have attached a usb c type to usb 3.0 converter .
1.how can i build a serial avr programmer to program my MCU chips using ISP method from my MACBOOK.
- I have searched about Serial and parallel avr programming and most said that because of voltage levels , direct serial programming wont work for an avr , but is it possible to use serial network for data transfer while powering the setup up with an external voltage source , would that work the same as direct serial cable programming of AVR chips?
- i have a VGA cable , how do i configure it to use it like DB9 cable , is that a thing we can do ?
- Lastly any extra help provided with an updated Universal AVR serial programmer circuit schematic , which works with usb to serial converter cables or in general with non serial port laptops , would be great .