5
votes
Accepted
Why does pixel binning remove colors and provide monochrome image only with CMOS color cameras?
It could be because of the Bayer (color filter) array, although that depends on the camera manufacturer making a particular set of decisions.
Adjacent pixels have filters in front of them that make ...
- 4,705
4
votes
Accepted
How can a charger charge both a phone and a laptop?
The "charger" only provides power at constant voltage and the actual charging logic is within the device being charged. USB-C specification allows the slave device to select the voltage ...
- 2,224
2
votes
USB transfer speed vs charging power
The e-marker chip is just that: a marker. It can mark many different things, and 5A current carrying capability is just one of the things it can mark. It doesn't have to.
For example, I've been ...
2
votes
How to get more current from laptop usb 3 port
USB 3.0 standard says it can provide up to 4.5W (0.9A@5V) of current, with dedicated downstream charging USB 3.0 ports providing maximum 1500mA (7.5W). 5V/2A is simply not possible. The internal ...
- 3,328
2
votes
Accepted
Shorting the USBLC6 ESD protection pins
Yes, that strategy will negatively affect ESD protection.
The equivalent pspice model shows this:
There is an impedance on both sides of the data lines (likely caused by the package leads and bonding ...
- 324
1
vote
Why does pixel binning remove colors and provide monochrome image only with CMOS color cameras?
There is no hardware reason this is done, and not all CMOS cameras revert to monochrome when binning. Most likely the vendor did not expect demand for the feature and so did not implement it. ...
- 10.5k
1
vote
Accepted
Do I need a diode in my circuit when using a USB-powered DC power supply to power a laptop camera?
2 silicon diodes in series will have a nominal voltage drop of 1.4V. 5V source from the USB - 1.4V drop from the diodes = 3.6V. Most 3.3V devices are probably maybe fine with 3.6V.
This isn't ideal as ...
- 71k
1
vote
Accepted
What does T designator means in PCB?
Likely a TVS diode, since it is a protection component on USB data lines.
- 89.7k
1
vote
Type C to type C USB2.0
USB2-only Type-C to Type-C cable is normative (Table 3-11, p. 76 of USB Type-C cable and Connector Specification 2.0). It requires 5 wires (GND, VBUS, D+, D-, CC) plus shield.
Connectors you are ...
- 1,111
1
vote
Accepted
TUSB2036 hub IC: only mouse and keyboard work at downstream ports
The datasheet qualifies the TUSB2036 as "full speed" hub, which is USB 1.1 (1.2 MBit/s)
There is no bug in your circuit and no software will make a high speed hub out of it. It is just doing ...
- 1,964
1
vote
Routing USB signal on RP2040
For USB FS stubs of an inch length – what you seem to be showing – it doesn’t matter much what you do in terms of impedance. Just route the traces close together over a ground plane and all is good.
1
vote
Routing USB signal on RP2040
USB connectors are compatible. If you use USB 3.0 but use only USB 2.0 pins, it is equivalent to plugging a USB 3 device to USB 2 socket, or plugging USB 2 device to USB 3 socket.
"Best" ...
- 89.7k
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