Problem

[zhuiwang]

Hello, I made a Divergence Meter according to your project, but it seems that in the working part of Attiny861a, the flash programming is successful, although the fuses programming fails, but the extended reading value is 0xff, which is a meaning with your definition of 0x01; It should be that the programming is successful, the display data of the tube is confusing, and only the dimming can be controlled. I would like to ask, does this project require PCB materials? I ’m using FR-4. Is it a quality problem of the DIN CLK signal transmission? Thank you

[waicool20]

0xff is the default unprogrammed state for the extended fuses. If you have a logic analyzer use that to verify that bits are being shifted into the shift registers on the DIN and CLK line. Did you etch your own PCBs? I'm also using FR-4 PCBs

[zhuiwang]

When I leave it for a period of about 30min, after powering on, the normal display time starts to jump normally (hours, minutes, seconds), but a few seconds, it will enter a chaotic digital display (not the world line change). The software is the same. If there is no problem, should this situation be a hardware problem?

[waicool20]

It might be hardware, check for loose connections and that the voltage supply is stable and high enough typically 12v+

[zhuiwang]

I made two main boards, both of which can light up the tubes, but the data is messy. It's a pity that I don't have the relevant test equipment, and I have carefully checked the welding, but there are not many ideas for solving this hardware problem. Do you have an extra main board (only main board)? Can you send me one if any? (I pay you the main board production price and courier costs. I'm in mainland China. Express delivery should be very convenient.)

[waicool20]

Did you etch your own boards or did you get professional PCBs? Not convenient for me to solder anything, but PCB is ok. Mail me your wechat ID and we can discuss further arrangements.

[zhuiwang]

您是蚀刻自己的电路板还是获得专业的PCB？我不方便焊接任何东西，但PCB可以。给我发送您的微信ID，我们可以讨论进一步的安排。

wechatid: Mashiros Thanks