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by lbdroidman
Fri Oct 19, 2018 8:20 pm
Forum: Beginners
Topic: How to turn off Camera IR LEDs?
Replies: 15
Views: 2711

Re: How to turn off Camera IR LEDs?

Those LEDs have a light sensor connected to each one, so they shouldn't turn on unless it is dark. There is no other way of controlling them without modifying the hardware. Are you suggesting that my setup might be broken and i should return the camera? By the way auto night mode works with no issu...
by lbdroidman
Fri Oct 19, 2018 7:44 pm
Forum: Beginners
Topic: Usuable for a basic media system?
Replies: 8
Views: 552

Re: Usuable for a basic media system?

So you're going to guilt your parents into lugging around a bag full of messy wires that won't do anything that their CELL PHONES won't do 100 times better?
by lbdroidman
Fri Oct 19, 2018 7:30 pm
Forum: Troubleshooting
Topic: USB electrical heat/zap
Replies: 5
Views: 436

Re: USB electrical heat/zap

Wow, you've got A/C driving into the ground plane of your exposed and sensitive electronics and you're asking if something could get fried? Let me be perfectly blunt: Until you get that grounding sorted all out, unplug EVERYTHING. If you can feel the A/C by touching the USB jacks, then just imagine ...
by lbdroidman
Thu Oct 18, 2018 8:51 pm
Forum: Other projects
Topic: 5050 led questions
Replies: 1
Views: 1101

Re: 5050 led questions

If the strip can be powered by USB, then it draws little enough current that you can power it through the pi. I'm not sure what you mean by driving them individually. Do you mean each color individually? The LEDs will be arranged in parallel on those strips and so there is no way to address one spec...
by lbdroidman
Thu Oct 18, 2018 8:31 pm
Forum: Other projects
Topic: home automatization raspberry pi
Replies: 10
Views: 1896

Re: home automatization raspberry pi

Hello I'm new to the raspberry, and i decided to build a home automatization system(using relays) with raspberry pi3+. I'm wondering if it's possible to build android app in android studio that will work on raspberry? best regards jaka Android application will only run on the pi, if the pi is runni...
by lbdroidman
Thu Oct 18, 2018 8:24 pm
Forum: Other projects
Topic: making a digital piano : is the rpi fast enough ?
Replies: 13
Views: 2346

Re: making a digital piano : is the rpi fast enough ?

Here is the part of my program where I'm not sure that the rpi will be fast enough : //I dont know how to use gpios yet so I put comments instead while { for i from 1 to 8 { //write HIGH on output number i for j from 1 to 22 { //read input number j } } //read input number 23 } It isn't entirely cle...
by lbdroidman
Thu Oct 18, 2018 7:08 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Cannot detect sensor with i2c-gpio (i2cdetect -y 3)
Replies: 8
Views: 1633

Re: Cannot detect sensor with i2c-gpio (i2cdetect -y 3)

You don't *need* a breadboard, they're just nice for keeping your circuit organized, clean, and robust. You can certainly dangle components in a drunken spiderweb configuration, and it will still work if the connections are all correct. What you will be looking for in a resistor, is a run of the mil...
by lbdroidman
Thu Oct 18, 2018 6:14 pm
Forum: Off topic discussion
Topic: Add Analog to Digital pins to the pi
Replies: 14
Views: 3223

Re: Add Analog to Digital pins to the pi

Isn't 100% of the purpose of that big pin header along the top of the board for the purpose of adding the random stuff that YOU like? There are two problems with the kitchen sink approach to hardware like this; 1) if you added every possible thing needed by... everyone, the cost would rise from $25 ...
by lbdroidman
Thu Oct 18, 2018 4:09 pm
Forum: Advanced users
Topic: I want MySQL instead of MariaDB
Replies: 54
Views: 21032

Re: REAL MySQL instead of MariaDB

@Francois117: MySQL 5.6 is ancient. Goes all the way back to 2013. That's not in and of itself a bad thing, but keep in mind that things change over time. Fact is that MyOracle 8.0 is *also* not a drop in replacement for MySQL 5.6, and you would end up running into similar or worse problems going fo...
by lbdroidman
Thu Oct 18, 2018 2:59 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Both speaker and microphone via I2S
Replies: 9
Views: 4219

Re: Both speaker and microphone via I2S

Ok, so this all comes down to drivers/devicetree and the fact that you have 2 drivers competing for the same seat ("sound"). The one who sat in the seat first (hifiberry) wins. So here is the thing; the hifiberry driver defines both a machine driver, as well as a platform driver. Looking at the mach...
by lbdroidman
Thu Oct 18, 2018 1:58 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: ADC Based on PCM1804, PCM4204 or PCM4202 (I2S)
Replies: 1
Views: 1278

Re: ADC Based on PCM1804, PCM4204 or PCM4202 (I2S)

The 4204 will end up giving you a real bad time since the pi doesn't have enough i2s inputs to support it, and it has a ton of pins. The 1804 and 4202 both cannot operate without an external clock, so it needs something like a crystal, or other source of SCK supplied to it. My suggestion would be th...
by lbdroidman
Thu Oct 18, 2018 1:32 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Can controller and can transceiver
Replies: 1
Views: 683

Re: Can controller and can transceiver

Both of those boards have BOTH of the chips you mention. One just doesn't have it listed specifically in the description, but it is very clearly there when you look at the picture of it.
by lbdroidman
Thu Oct 18, 2018 1:20 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIO protection circuit for oscillating input voltage
Replies: 8
Views: 1598

Re: GPIO protection circuit for oscillating input voltage

You can do this with a single N-FET with a VGS max that is greater than the maximum voltage your signal carries, and a VGS threshold that is lower than the minimum "on" signal. For example, VN2222LL has a VGS max of 30V (>20V) and a VGS threshold of 2.5V (<10V). Now its an N-FET, so you will set you...

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