An AVR Programmer based on USBasp which uses a ZIF-Socket for Programming.
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AVR-ZIF-Prog.pdfSchematicAdobe Portable Document Format - 114.88 kB - 03/18/2017 at 14:22 | | |
Hello everybody,
after I fixed some broken connections on my self-etched PCB, it seems to work so far I could test. I tested an ATTiny 13, an ATTiny2313 and an ATMega8, so it should work with their respective MCU-families, too. I could not the ATMega 16 and ATTiny 26 family (but I think they should work), so if anybody rebuilds this project and test these MCUs i would be pleased when you write a comment.
I have released my design files under the CERN OHL v1.2 License, you can find them together with my modified bootloader and firmware code in this (https://github.com/jbtronics/AVR-ZIF-Programmer) GitHub repo
Finally some images of my board. It is self-etched with Sodiumpersulfate using the toner-transfer method. With the same method i put some silkscreen like print on the board. Additionally the board was tin-plated using some fittings solder paste:
Here are some Pictures of the PCB that I have rendered in KiCAD.
In the next few days I will etch the PCB, build it and test it. I will keep you updated.
Hi,
I have not the time to test my Design yet, so I do not know if it really works ( but I think it will :) ), but I upload my KiCAD Design already ( They should be in the Files Section now).
When someone finds mistakes, have improvements, or even build the Programmen then write it in the Comments.
Finally I have finished the Schematic for the Programmer and have done the assignment of Footprint to the single schematic symbols.
Now I have only to create the PCB and then test it.
Here is the Schematic already:
Use the Layout files to order a PCB or made one by yourself.
Solder all components on it, except the Mega 8. I suggest to solder a socket for it instead. So you can replace it later (in case of wrong programming the "Master" CPU")
Put your Mega8 (or 88/168/328) in the ZIF socket in the right position for Mega8. Put the RESET-Jumper P5 in the Position PROG.
Jan B.
Hi I had an idea for slot loading cartridges and ZIF alternative. The metal should clamp down like a guitar capo. The game cart or chip is inserted then a slot like level slides the wires in place.