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1 vote

Detect the 2D position of a ball hitting a 6ft x 6ft wood target

Proposal with two variants of an X-Y grid. The 6ft x 6ft (1.8 x 1.8m) target would be covered in an X - Y grid of conductive wires e.g. stainless steel, bronze, etc. The variant is the base of the ...
PDP11's user avatar
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0 votes

Detect the 2D position of a ball hitting a 6ft x 6ft wood target

You can use any cheap video camera hooked up to a computer. Ideally, you will want to paint the 6' x 6' board black to have high-contrast (assuming a white baseball). Then, write a program to reduce ...
MOSFET's user avatar
  • 318
0 votes

Noisy or malfunctioning PIR HC-SR505 sensor

Hi guys I place a 1kohm resistor at the sr505 negative end which is connected to ground.. It solve the false positive problem! I've been troubleshooting it for 2days,I hope this tip helps.
Benedict's user avatar
1 vote

Detect the 2D position of a ball hitting a 6ft x 6ft wood target

So, depends on what resolution you need. You could simply wire up a bunch of momentary switches, and put them in a rectangular grid, behind wooden squares. (Mechanically, you'll add stops behind the ...
Marcus Müller's user avatar
0 votes
Accepted

Detect presence of a thin wire

One possible solution to detect the Nitinol wire passing through the gap is to use an inductive proximity sensor. These sensors work by generating a magnetic field around a coil, and detecting changes ...
Stefan Wyss's user avatar
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1 vote

TC1046VNBTR: Temperature Sensor output has an oscillation

Remove the cap on the output or add an R between the cap and the sensor. When you add C to an amplifier output you can make it oscillate.
asdf30's user avatar
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1 vote

Would a Hall effect sensor be damaged by gross saturation?

I'm not aware of such a failure mechanism related to (coreless) Hall effect sensors, in and of themselves. What comes to mind: 1. Fusing, as in, you've blown up the sensing element, or otherwise ...
Tim Williams's user avatar
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1 vote

Would a Hall effect sensor be damaged by gross saturation?

Each sensor should have some "absolute maximum ratings" including maximum magnetic flux density (B). For example MLX91208 have absolute maximum +-3T. If you know distance of your sensor from ...
Michal Dudka's user avatar
2 votes

Would a Hall effect sensor be damaged by gross saturation?

According to Allegro: There is no upper limit to the magnetic field strength that may be applied to a Hall-effect sensor. That said, it's always possible that a rapidly changing magnetic field might ...
Spehro Pefhany's user avatar
1 vote

Problem with an LM35DZ temperature sensor

The 52AB batch are fakes. If you test them with multimeter they are behaving like NPN transistors.
Mat's user avatar
  • 11
0 votes

Setting up a grid of IR sensors

You can put a microphone in each corner and triangulate the position based on the relative time delay from the bounce. In a silent room, where only the bounce is audible, simple comparator analog ...
MOSFET's user avatar
  • 318
3 votes

Latching relays for a water pump with two XKC-Y25 sensors

This type of control setup is a frequent request. It is less complicated than you think. And, the control circuit and the pump are completely isolated from each other and can have different power ...
AnalogKid's user avatar
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2 votes
Accepted

Latching relays for a water pump with two XKC-Y25 sensors

You need one relay, plus a NO (normally open) low sensor and a NC (normally closed) high sensor. If sensors only come in NO versions their "sense" can be inverted either electronically or ...
Russell McMahon's user avatar
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4 votes
Accepted

Register address offset of a 16-bit register

Perhaps a more intuitive way to understand this is if you look at it as an array. ...
Velvel's user avatar
  • 3,796
4 votes

Register address offset of a 16-bit register

No it reads right there, each address has a word of data that is 16 bits. It means the data is not addressable in 8-bit bytes.
Justme's user avatar
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5 votes
Accepted

Is it better using NTC or a proper temperature sensor?

There's nothing wrong with an NTC thermistor, it's as 'proper' as anything. Silicon sensors maybe be better or worse than in some regards. As may RTDs or thermocouples or other more exotic sensors. As ...
Spehro Pefhany's user avatar
2 votes

Is it better using NTC or a proper temperature sensor?

There is no abolute "proper" or "better" solution in electronics, those notions exist only in relationship with your spec. Quantify what you mean by "acceptable", then ...
Sclrx's user avatar
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4 votes

Is it better using NTC or a proper temperature sensor?

A NTC thermistor is actually a pretty good sensor if implemented well. I've done something similar to yours (keeping an eye to the temperature of a Li-Ion cell and adjusting charge current to avoid ...
anrieff's user avatar
  • 5,331
3 votes

Is it better using NTC or a proper temperature sensor?

Would an NTC with voltage divider be ok or is it better to use a sensor like the LM36? Choose the device that meets your accuracy requirements (data sheet information), is easiest to implement, is a ...
Andy aka's user avatar
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1 vote

How to connect MPU-6050 gyroscope pins?

CLKIN is the external reference pin for a clock - it can be used to synchronize different devices to the same timing, if timing is critical. You can tie this to GND if you're only using the gyro. ...
JohnFahey's user avatar

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