reprap:anet:anet_mainboard_overclocking

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reprap:anet:anet_mainboard_overclocking [2018/01/09 03:05]
gmarsh23 [Updating the bootloader]
reprap:anet:anet_mainboard_overclocking [2018/12/02 01:27] (current)
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 === Choosing a new crystal === === Choosing a new crystal ===
  
-The Anet V1.0 board requires a "​HC-49S"​ surface mount crystal. Choose one with an 18 to 22pF load capacitance,​ as this best matches the load capacitance provided on the Anet board.+The Anet V1.0 board requires a "​HC-49S"​ surface mount crystal. Choose one with a 12pf load capacitance,​ as this best matches the load capacitance provided on the Anet board.
  
 Here are some suitable crystal frequencies to choose from: Here are some suitable crystal frequencies to choose from:
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 | 27MHz | +68.8% | +35% | May be unstable.\\ significant baud rate error (see below)\\ Can be salvaged from video equipment (DVD players, etc) | | 27MHz | +68.8% | +35% | May be unstable.\\ significant baud rate error (see below)\\ Can be salvaged from video equipment (DVD players, etc) |
  
-If you're using the USB interface of the printer, using Octoprint for example, the crystal you choose affects how accurate the baud rate of the Mega1284P'​s UART will be at a given baud rate. For reliability reasons this should not exceed +-5%; ideally this value is less than +-2.5%. If you only printing from the SD card, this isn't an issue.+Note: If you're using the USB interface of the printer, using Octoprint for example, the crystal you choose affects how accurate the baud rate of the Mega1284P'​s UART will be at a given baud rate. For reliability reasons this should not exceed +-5%; ideally this value is less than +-2.5%. If you don't plan on using the printer'​s USB connection, this isn't an issue.
  
 ^ Crystal freq (below), baud (right) ^ 115200 ^ 230400 ^ 250000 ^ 460800 ^ 500000 ^ 921600 ^ 1000000 ^ 1500000 ^ ^ Crystal freq (below), baud (right) ^ 115200 ^ 230400 ^ 250000 ^ 460800 ^ 500000 ^ 921600 ^ 1000000 ^ 1500000 ^
  • reprap/anet/anet_mainboard_overclocking.txt
  • Last modified: 2018/12/02 01:27
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