| Electronics > Projects, Designs, and Technical Stuff |
| STM32F103 min system with USB-TTL converter? |
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| thm_w:
Can you post their schematic? Or compare yours and theirs and see what the difference is in terms of USB/CH340. |
| bjdhjy888:
OMG!!!!!!!!!!!! my project is working!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ;D ;D ;D ;D ;D ;D ;D 2 issues degbugged! 1. CH340C's pin 4 and pin 16 are now powered at 3.3V, instead of 5V, thanks to another schematic found on the internet. 2. Reset button must be pressed before flashing, while boot 0 is on man, i'm thrilled! thanks for you guys' help! debegging is painful, but it's worth it! thanks again, bros!!! ;D ;D ;D ;D |
| bjdhjy888:
My next step is to connect an external MPU-6050 module with my board. In order for the module to communicate with my board, I need to use two wires for an I2C connection between MPU-6050 and my STM32. The thing is, there is no room around PB6 and PB7 of my STM32. I will need to put two vias inside my STM32. Is this unprofessional? I tried to avoid putting vias inside any IC's. Please let me know. Thanks! |
| mariush:
Well, i wrote two long posts with suggestions and you seem to have ignored everything i said, or even acknowledge what I wrote.... so why would i bother giving you more advice or tips? just the first thing that comes to mind is.... for example at least two people told you that those oscillators/crystals/whatever should be close to the chip and those small ceramic capacitors should also be close, yet your parts are still centimeters away from your chip. |
| bjdhjy888:
--- Quote from: mariush on August 31, 2019, 12:01:46 pm ---Well, i wrote two long posts with suggestions and you seem to have ignored everything i said, or even acknowledge what I wrote.... so why would i bother giving you more advice or tips? just the first thing that comes to mind is.... for example at least two people told you that those oscillators/crystals/whatever should be close to the chip and those small ceramic capacitors should also be close, yet your parts are still centimeters away from your chip. --- End quote --- Though I did appreciate your reply, I had the right to not follow yours. I followed most people's replies. If you feel uncomfortable, please do reply my posts again. I don't like being overwhelmed or reading huge paragraphs with no capitalizations or logic. I had trouble reading your English as well. Sorry. |
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