[因为网站不支持附件下载，所以附件下载请移步此链接](https://www.kechuang.org/t/90217) ### **前言：** 因为泉盛UV-K5/K6业余无线电台功能越来越多，可以玩的固件的体积也越来越大，泉盛官方也出了4Mbit（512K Byte）的大容量机型。普通版本的K5/K6仅有较小的64Kbit（8K Byte）而大容量的机型除了eeprom增大外，其余元器件皆和普通版K5/K6一致，便有了将普通版扩容成大容量版本的想法。 [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901143-417786-qq20240621003149.png] [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901194-462163-qq20240621003302.png] ### **工作原理：** 因目前（截至24/06/21）市面上可以买到的最大的IIC协议的EEPROM为2Mbit（256K Byte），所以便诞生了将2颗EEPROM串联使用的方案（Ref下图六月的雨所制作的图示） [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901351-778592-qq20240621003512.png] 又因为两颗EEPROM叠在一起焊接+飞线的美观度较差，所以本人依此原理绘制了双eeprom转板 ### **使用教程：** 1. 在PCB制作平台打板板厚：0.8mm 拿到PCB后若出现类似于下图绿色框中的多余边角，需要用砂纸打磨掉 [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901469-367352-qq20240621003716.png] 2. 拆掉旧EEPROM（因为拆的时候没有拍照，借用LOSEHU视频中的图片） ***另外拆EEPROM之前，请按照《泉盛K5K6扩容操作指南》备份好配置数据和校准数据，避免产生不必要的麻烦** [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901469-367352-qq20240621003716.png] 3. 按图所示，将小板的8个孔对准原eeprom焊盘，PCB丝印的箭头对准PCB外框进行对位，调节小板的位置并进行焊接。 ***小板最下端需要在露金边框的上方，避免铝盖干涉导致盖不上 **本人使用热风枪进行焊接动作，如果你只有烙铁可以进行焊接，可以尝试将对位用8个锡孔灌锡加热，起到焊接牢固的效果。** [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901587-386464-qq20240621003906.png] [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901587-773011-qq20240621003925.png] 4. 依次焊接两颗M24M02 ***有ST LOGO的为1脚，千万不要焊反了，会导致EEPROM甚至对讲机烧毁（EEPROM脚位图借用LOSEHU的图片）** [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901672-408617-qq20240621004031.png] 5. 最终焊接效果如下，焊接成功后在软件中也是可以检测到512KB（4Mb）的EEPROM [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901672-882292-qq20240621004045.png] [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901673-104191-qq20240621004058.png] 6. 继续按照《泉盛K5K6扩容操作指南》进行后续动作 ### **备注：** 如果你焊接了转板，但是只想使用1颗EEPROM，请按照下图，在位置1（丝印BD4XNS）的地方焊接你的EEPROM，位置2（丝印2）留空即可 [upl-image-preview url=https://storage.hamcq.cn/2024-06-20/1718901767-989413-qq20240621004227.png] 祝玩机愉快 BD4XNS 2024/06/21

因HamCQ不支持附件下载，所以此文件gerber下载请移步：https://www.kechuang.org/t/90217

膜拜。照此推理，是不是还可以再多串几个，把k6当u盘使？🤪

@"ppyyf"#p21044 emmmm 有个问题就是这玩意的通讯协议是IIC，其实速度很慢...4M下载个字库真的得下好久..

前几年DIY u盘的时候就搞过叠焊flash，好像还得看CE

请教：双 EEPROM 相比单 EEPROM 有什么优势吗？固件上有多出什么功能吗？自己已经扩容到 2Mbit 了，不知有没有必要再扩容一次

QuanSheng UV-K5/K6 dual EEPROM modification small board guide

BA4QMQ

BG9JFN I've also seen this before, and I was thinking about getting a new one.

BA4QMQ

I was able to see the memory usage through the quick web interface a couple of days ago, but now I can't anymore. I don't know if the replacement failed.

BG9JFN

BA4QMQ Don't worry about it; just repot it. Haha.
Just kidding, if the detection shows damage or "unknown," it means there's a problem with the soldering. Disassemble and resolder it. If it was previously working but now isn't, that indicates you've made a solder joint that's too thin (a "cold solder"), which can be fixed by re-soldering.
The K6 is quite robust; feel free to experiment with it.

BA4QMQ

BG9JFN I broke the board.😂

BG9JFN

BA4QMQ How could I have burned the pot? Well, since it's already burned, just replace it.😂

BA4QMQ

BG9JFN The soldering iron's temperature might have been set too high; I had to buy a new one.

BG9JFN

BA4QMQ The temperature of the Löt should not be a major concern; I directly set my Löt temperature to 450 degrees.
What's the current situation? Does the chip no longer recognize after being soldered?

BH2XIY

The modification was successful, and I immediately set up multiple systems for Lion Tiger, thanks to open source.

BA4QMQ

BG9JFN It can recognize, but only in 8K resolution; welding with 2M resolution is not recognized.

BG9JFN

BA4QMQ In that case, it's unclear. It wouldn't be a case of buying fake chips, would it?

BI7KGD

Has there been an update to the C-port solution described by the original poster? I noticed that the previous version did not include a CC line.
I saw the plan that lz posted when I was preparing to do it myself.

Moonlight

BI7KGD I've already completed it, but unfortunately, these modified small boards are being sold everywhere on Xianyu. I also saw several listings where people had removed my call sign and replaced it with their own.
I don't think this aligns with my open-source philosophy, so the C port will no longer be open source.
If you would like to receive a finished product or have your changes made, please contact BD6ITS (they currently have my exclusive authorization).

BG4JUG

The storage has been expanded to 4MB and supports multiple operating systems.

BI7KGD

Moonlight
I had been searching on Xianyu for a long time but couldn't find it.
Unfortunately, I had to redraw it myself. I used a CH340 programmer and added the missing 5.1k resistor that the original manufacturer had omitted, which allows for C-to-C PD charging.
I'm curious to see how it looks when applied.

Moonlight

BI7KGD However, if you would like, you can find me on the forum and click "exchange card" – I can also send you 2 blank cards.

Tokeyyeung

Hi, I've updated the board to be two pieces connected together. What should I do now?

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