Thanks for the warning.
The headphone amp would be powered by a separate power supply, this is why I was asking about the power relay control on the LDR board. I'll just keep it powered on all the time anyway.
The headphone amp would be powered by a separate power supply, this is why I was asking about the power relay control on the LDR board. I'll just keep it powered on all the time anyway.
I have one fully assembled and tested set for sale including power supply that can be adapted to US voltage, with the original PCB and BOM specs from Vincent, apart from 4x2 IO board which is smaller and does not switch the ground and therefore using only half of the relays. I can bundle it with OLED or LCD.
You would only need to add a box, power and RCA connectors.
You would only need to add a box, power and RCA connectors.
need help
I have a AIO from Zdr and the 2004 LCD. I only have one input and output attached to the board. I made the calibration process but in the end my lcd doesnt respond to the controller input. it hangs. what could be the problem? My LDR values are LSE-100
LSH-125
RSE-73
RSH-99
I have a AIO from Zdr and the 2004 LCD. I only have one input and output attached to the board. I made the calibration process but in the end my lcd doesnt respond to the controller input. it hangs. what could be the problem? My LDR values are LSE-100
LSH-125
RSE-73
RSH-99
i have the "narrowing conversion" problem in the verification process but the code updates. The Lcd seems to be working in the calibration menu. Only the normal operation hangs after some 2 or 3 seconds of turn on.
problem solved or at least i find it. If i touch the unpluged pins of the arduino nano (tx, Rx) with a feather pressure the lcd refresh nicely. So, i think it could be the absence of earth wire. will see and post.
error 1 , error 2
i had great fun assembling the LDR cotroler and the powersupply.
i uploaded the Nano and it seems to work!
here are some pictures of my build.
Preamp - stereoscope
unfortunately i dont seem to be able to get it to calibrate.
i started with setting the bias, it seems rather difficult to adjust.
(when i switch to "bias Adjust" the Multimenter shows about 1mr, and it slowly goes down to 800k.) then i set it to 700k
i measured the res:
1: 100r
2: 161r
3: 114r
4: 195r
Voltage is 4.96V
after updating the code i started calibration but it finishes either with error 1 or error2
the bias always seems to drift.
am i doing something wrong here?
Thanks !
i had great fun assembling the LDR cotroler and the powersupply.
i uploaded the Nano and it seems to work!
here are some pictures of my build.
Preamp - stereoscope
unfortunately i dont seem to be able to get it to calibrate.
i started with setting the bias, it seems rather difficult to adjust.
(when i switch to "bias Adjust" the Multimenter shows about 1mr, and it slowly goes down to 800k.) then i set it to 700k
i measured the res:
1: 100r
2: 161r
3: 114r
4: 195r
Voltage is 4.96V
after updating the code i started calibration but it finishes either with error 1 or error2
the bias always seems to drift.
am i doing something wrong here?
Thanks !
i have got Nebs AIO Board, and i used NSL-32SR3.
the Mosfets are FDV301N.
i checked Resistor Values for the Biasing circuit, they are ok.
Is changing the Optocouplers really the only thing left i can do here?
Any Help would be apreciated😕
thanks!
the Mosfets are FDV301N.
i checked Resistor Values for the Biasing circuit, they are ok.
Is changing the Optocouplers really the only thing left i can do here?
Any Help would be apreciated😕
thanks!
I believe it's written somewhere in the code comments that if any value is higher than 150, ldrs should be replaced.
Thanks for your reply,
i checked the code, it says
any value above 200r should be replaced.
maybe i have to order some in anyway..
i checked the code, it says
any value above 200r should be replaced.
maybe i have to order some in anyway..
Make sure you don't have anything on the outputs and inputs while calibrating, and that you did not make any soldering mistakes. I would not change ldrs before everything is triple checked. Check all the resistor values around fets.
Its Working
i checked all the resistors but that was all ok.
i tried to bias @ 900k and it showed error 2 again, after only one readjustment it went through with calibration.
i plugged it up to my liteamp straigt away to see if its working and i am listening still!
(first song was Agnes Obel - the curse)
now i can start playing around.
thanks guys!
i checked all the resistors but that was all ok.
i tried to bias @ 900k and it showed error 2 again, after only one readjustment it went through with calibration.
i plugged it up to my liteamp straigt away to see if its working and i am listening still!
(first song was Agnes Obel - the curse)
now i can start playing around.
thanks guys!
The psu board from Vincent is compatible with your implementation?
Do you provide smd to through hole pcb for the FDV301N?
Do you provide smd to through hole pcb for the FDV301N?
Both smd and through hole fets are accepted on board. Original PS works with the AIO PCB.
Do you have pcb's available and what is the price ?
Where do you find those connectors ?
Regards,
Ronny
Where do you find those connectors ?
Regards,
Ronny
Price is 45eur with 9 Omron relays on board plus shipping.
Connectors used to be available on AliExpress, but I cannot find them any more. I ordered similar ones to see if they can fit. Otherwise I can include connectors I have with PCB on request.