Anyone familiar with arduino's around ? I'd like to build a remote controlled volume control around the alps RK168 motorized potentiometer but I've never used microcontrollers before.
There's a chinese kit floating around ebay for this (lite mv04) but the grounding is awful, the parts probably fake and source selection akward. So I'd rather build something myself.
I attach the schematic below. It's quite simple. At the heart of the thing is an atmega328p. Those chipsets can be bought with the arduino bootloader. They can then be programmed in circuit with an arduino uno board.
It's connected to a IR receiver (on pin 5), to receive commands from an Apple remote. An H-bridge is connected to pin 15-16 (pwm outputs) to power and control the motor.
There's also an input selection section with relays (high sensitivy 5v ones from omron) but that one is simply controlled with a rotary switch. Remote source selection isn't something I use often.
The whole thing is powered from a lm2956 switching regulator and fits on a 8*8cm board.
Does the overall schematic look ok ? Thanks in advance for any help on this.
There's a chinese kit floating around ebay for this (lite mv04) but the grounding is awful, the parts probably fake and source selection akward. So I'd rather build something myself.
I attach the schematic below. It's quite simple. At the heart of the thing is an atmega328p. Those chipsets can be bought with the arduino bootloader. They can then be programmed in circuit with an arduino uno board.
It's connected to a IR receiver (on pin 5), to receive commands from an Apple remote. An H-bridge is connected to pin 15-16 (pwm outputs) to power and control the motor.
There's also an input selection section with relays (high sensitivy 5v ones from omron) but that one is simply controlled with a rotary switch. Remote source selection isn't something I use often.
The whole thing is powered from a lm2956 switching regulator and fits on a 8*8cm board.
Does the overall schematic look ok ? Thanks in advance for any help on this.