Differences

This shows you the differences between two versions of the page.

--- rgb_dimmer [2023/02/28 13:50] – breaker27
+++ rgb_dimmer [2023/02/28 14:24] (current) – [Modification of PCB rev. <= 1.1] breaker27
@@ Line 46: / Line 46: @@
-===== Modification of PCB rev. <= 1.1 =====
+===== Modification of PCB rev. <= 1.1 and SW rev >= 0.13.0 =====
-The older PCBs have the speaker connected to PD3 (pin5). Since the 16 bit timer has to be used to generate accurate frequencies, you have to connect it instead to PB1 (pin 15).
+The older PCBs have the speaker connected to PD3 (pin5). Since the 16 bit timer has to be used to generate accurate frequencies, you have to connect it instead to PB1 (pin 15). The pin to drive the transistor for the blue LED has to be moved from PB1 (pin 15) to PD3 (pin 5).
-The pin to drive the transistor for the blue LED has to be moved from PB1 (pin 15) to PD3 (pin 5).
 In future PCB versions, this shall be changed in the schematic and layout.
-To perform the modification, cut the PCB tracks on the marked positions and connect them to the other pins.
+To perform the modification, cut the PCB tracks on the marked positions and connect them to the other pins with patch cables.
+{{ rgb_dimmer_speaker_mod.jpg }}
 ===== Flashing the firmware =====