Malachite SDR STM32H7-SDR verified successfully

The original version of Malachite SDR is a four-layer circuit, which has been changed to a double-layer board. The components have been modified from 0402 to 0603 to facilitate welding. The LCD uses 50pin. You can also modify it yourself to use 40pin. The cost is cheaper. It has been verified by making a board. Success. It should be noted that the test found the following two problems. 1. This circuit has interference at 100M. It is said that the four-layer board drawn by other people in the group is also the same. 2. If you keep pressing the touch screen, there will be a clicking sound and the screen will go off. After that it was gone.

Changed to double-sided panel and the size is within 10x10cm. All components are made of 0603. The cost of making the board is significantly reduced and it is more suitable for welding. If you like SDR, you can make a sample and weld it directly.

You can use it to burn old codes, but the frequency is limited to 200M. Since you need an activation code to burn the latest board, you can send an email to the original author to try to get it. My colleague sent me an email to ask for this board, but I can’t get it. No more fussing

Matching shell link: https://item.taobao.com/item.htm?spm=a1z0d.6639537.1997196601.89.94927484hA9Jb7&id=35829942915 Supplement the screen link: https://detail.1688.com/offer/53... r .25.5e2e4aadNGR6rq

Supplement: After burning the new version, if you want to go back to the old version, you need to short-circuit any two lines of the SPI interface of the FRAM until the screen lights up before turning on the power.