Differences

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--- clapperboard [2017/05/21 18:55] – add hardware kingkevin
+++ clapperboard [2024/01/07 17:49] (current) – external edit 127.0.0.1
@@ Line 25: / Line 25: @@
 And instead of having to announce the take number so to be present in the audio recording, a buzzer with take care of this task instead of myself.
+One problem remains though: you have to ensure the recordings are synchronous so to prevent drift over time. For short period recording this drift might be negligible, but for long period you can either have a final clap to synchronize after-hand (e.g. in movie production), or use a common time source such as the mains frequency (e.g. in broadcast television).
 ====== hardware ======
@@ Line 55: / Line 56: @@
 The source code is available in the [[https://git.cuvoodoo.info/clapperboard/about/|git]].
 This {{ :clapperboard:clapperboard_firmware-v1.tar.bz2|firmware release}} also include binaries and documentation.
+====== future ======
+The prototype used off-the-shelve modules (displays, micro-controller board, RTC, ...) linked with wires.
+The next version would used a proper dedicated board replacing the board (just reusing the clap), removing the need of wires.
+Other small improvements:
+  * use the STM2F103 internal RTC instead if the DS1307
+  * use the internal backups registers instead of the EEPROM
+  * use only MAX7219 7-segment drivers and remove all TM1637 drivers (they are far inferior and need an additional multiplexer)
+  * use only red and larger 7-segment displays since the contrast is better
+  * use proper SMD components for the power controller (I used lying around through-hole components)