rgb_dimmer
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rgb_dimmer [2015/02/22 20:13] – [Recommended LED module and resistors] breaker27 | rgb_dimmer [2023/02/28 13:50] – breaker27 | ||
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The capacitor C2 is only to buffer the input voltage in case you connect LEDs that draw much power and you want to avoid problems with some programmers that may have problems flahing when the voltage changes much. | The capacitor C2 is only to buffer the input voltage in case you connect LEDs that draw much power and you want to avoid problems with some programmers that may have problems flahing when the voltage changes much. | ||
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===== Buildup of PCB ===== | ===== Buildup of PCB ===== | ||
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//(Image directly loaded from external GitHub source. If it doesn' | //(Image directly loaded from external GitHub source. If it doesn' | ||
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+ | ===== Modification of PCB rev. <= 1.1 ===== | ||
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+ | The older PCBs have the speaker connected to PD3 (pin5). Since the 16 bit timer has to be used to generate accurate frequencies, | ||
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+ | The pin to drive the transistor for the blue LED has to be moved from PB1 (pin 15) to PD3 (pin 5). | ||
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+ | In future PCB versions, this shall be changed in the schematic and layout. | ||
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+ | To perform the modification, | ||
===== Flashing the firmware ===== | ===== Flashing the firmware ===== | ||
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- | For the " | + | With the " |
Use resistors which can tolerate the power they consume. The power is calculated as: | Use resistors which can tolerate the power they consume. The power is calculated as: |
rgb_dimmer.txt · Last modified: 2023/02/28 14:24 by breaker27