linux-works
DIY: LCDuino + Delta1 (audiophile remote volume control)
inside view of the LCDuino1 (arduino based), delta1 controller and delta1 relay attenuator board. it runs my own VoluMaster firmware (currently in alpha test; soon to enter beta).
of interest: far left/top is a motorized pot and this has a unique function: it allows the user to directly adjust the volume but when the IR remote control is used, the motor 'keeps up' and always has the dot on the knob pointing to the current absolute volume level.
the lcd is part of a 3 layer 'sandwich'. toward the panel is the lcd, itself; a standard 16x2 hitachi parallel lcd module. next comes the lcduino1 which is a board that I co-designed with AMB.org and its main purpose is to control an 'audio system' (which has many components to it; one of which is volume control between a DAC and an amp). the 3rd layer is the 'app specific' board and its on perfboard, right now. it connects up the standard cpu lines that the lcd1 gives us and makes this an audio controller with all the things an audio controller would need.
on the rear are 2 power jacks: one is dc-power in (5v) and the other is a ttl switched 5v line used to turn on and off amplifiers (think: sleep timer) via an SSR (solid state relay).
central on the delta1 control board are a set of led bargraph displays. this is a unique feature that allows the developer (and user) to debug and even 'watch' the relay control lines. twist the knob and you get a free light-show every time ;) the yellow jumper disables this (for normal mode).
more info on this project at: www.amb.org/forum/delta1-relay-based-r-2r-stereo-attenuat...
DIY: LCDuino + Delta1 (audiophile remote volume control)
inside view of the LCDuino1 (arduino based), delta1 controller and delta1 relay attenuator board. it runs my own VoluMaster firmware (currently in alpha test; soon to enter beta).
of interest: far left/top is a motorized pot and this has a unique function: it allows the user to directly adjust the volume but when the IR remote control is used, the motor 'keeps up' and always has the dot on the knob pointing to the current absolute volume level.
the lcd is part of a 3 layer 'sandwich'. toward the panel is the lcd, itself; a standard 16x2 hitachi parallel lcd module. next comes the lcduino1 which is a board that I co-designed with AMB.org and its main purpose is to control an 'audio system' (which has many components to it; one of which is volume control between a DAC and an amp). the 3rd layer is the 'app specific' board and its on perfboard, right now. it connects up the standard cpu lines that the lcd1 gives us and makes this an audio controller with all the things an audio controller would need.
on the rear are 2 power jacks: one is dc-power in (5v) and the other is a ttl switched 5v line used to turn on and off amplifiers (think: sleep timer) via an SSR (solid state relay).
central on the delta1 control board are a set of led bargraph displays. this is a unique feature that allows the developer (and user) to debug and even 'watch' the relay control lines. twist the knob and you get a free light-show every time ;) the yellow jumper disables this (for normal mode).
more info on this project at: www.amb.org/forum/delta1-relay-based-r-2r-stereo-attenuat...