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➜ Simplified PCB for hex uploader
Simplified PCB for hex uploader
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Posted by
| Kapil Saraswat
(1 post) Bio
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Date
| Tue 12 May 2020 07:04 PM (UTC) |
Message
| Thank you for sharing a nice circuit to upload the hex file to an AVR microcontroller through SD card. I designed a PCB and before uploading to GitHub, I would like to share you the circuit diagram. Can you spare a time to verify the circuit I an using?
Please follow the link for the schematic (https://github.com/kapil-iitk/AVR_SD_Programmer/blob/master/AVR_Prog.pdf). In the schematic, I am using resistor based voltage divider network for the 5V to 3.3 V conversion (for SD card to AVR interface). Can I remove the reset switch? Also, can I use internal oscillator (8MHz) so that I can remove the crystal oscillator?
Thank you for your time. | Top |
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Posted by
| Nick Gammon
Australia (23,133 posts) Bio
Forum Administrator |
Date
| Reply #1 on Tue 12 May 2020 10:07 PM (UTC) |
Message
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- Nick Gammon
www.gammon.com.au, www.mushclient.com | Top |
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