Testing the amplifier module and 8 ohm speaker. Applying a modification to enable the Aux socket. Testing the module on a super capacitor bank.
http://www.st.com/content/ccc/resource/technical/document/datasheet/35/01/97/6b/20/ce/40/6f/CD00211320.pdf/files/CD00211320.pdf/jcr:content/translations/en.CD00211320.pdf
http://www.st.com/content/ccc/resource/technical/document/datasheet/35/01/97/6b/20/ce/40/6f/CD00211320.pdf/files/CD00211320.pdf/jcr:content/translations/en.CD00211320.pdf
Good evening Sir this was no faulty you must be switch off the Bluetooth your phone after working aux.
I want this kit
Price
Can I ask you 2 questionsthe first question would it be possible to have the volume buttons be off the circuit board and elsewhere but within the same unit
Alternatively if I wire say a 10K potentiometer between the speaker and the board could that act as a volume adjustment knob
I had one before, It worked fine! They didnt recode the CSR Bluetooth chip for allowing the AUX audio, as ive been told. Mine had working Volume buttons with i think play and pause working. I guess it varys seen as how cheap they are.
How to noise remover?????????
My amplifier board giving aux output,looking everything ok but no sound coming from both speakers channel when i am using blutooth no input working neither bluetooth nor aux input.i am using 19v laptop charger for power.two speaker using 8ohm 40watt.but overall no sound.what could be the reason?also playing on full volume both board and mobile but no sound.
My amplifier looks all good my bluetooth also working, I am using 19v laptop charger but still no sound from speakers on both channels.what could be the reason?
I’m just getting into these boards and your guys are brilliant learning a lot
Hi ! Thanks a lot for your vidéo !
Do you know how i could plug a manual switch in order to switch between aux and Bluetooth manually ? Thank you for your advices
I did a quick (non-technical) estimate of how long the charge would last (assuming the capacitors were "full"). My estimate – roughly 30 minutes – is based on timing how long the voltage in the video took to drop from 10.55 to 10.50 volts. I then used this to reckon how long it would take to drop to 8 volts (the threshhold voltage to make this particular loudspeaker work). The figure I came up with is roughly 30 minutes.
Needless to say, this is less than impressive and makes me wonder whether the whole idea of getting speakers to work on capacitors instead of batteries is fundamentally flawed. It is interesting that the crowd-funded Blueshift capacitor-powered portable speakers project seems to have folded. I can find no other similar commercial ventures on the internet. Heigh capacitor weight, low power density and low suppy duration may be the reasons.
Probably the worst video on this Amp .The polarity matters and you find it on the sites selling it .Plant pot.