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I use Vdd=Vhi=10v for the counter.
page 3 datasheet says at Vdd=10v, Vhi min = 7v. No typical or max value given.
https://www.ti.com/lit/ds/symlink/cd4040b.pdf
The transistor takes 5v/0v from the oscillator on the base, and 10v through the collector/emittor to the clock pin of the CD4020B. Why...
I use CD4020B because I have them. It can do 12 MHz and that's enough. Even 3.5 MHz would be enough. I just don't have matching components. I will order and wait for a compatible set.
Why couldn't I use 10v for the counters and 5v for the oscillator, with common ground of course? I use two...
Thanks to all of you for your quick and terrific answers!
YES! It seems it has, because together with the diode+capacitor suggested by Brian, it works when I give 5v to the fourth pin. In the documentation I thought was relevant that pin is labeled "not connected or e/d".
I skipped the radio...
Seems fairly simple. The Oscillator has 1 output pin. 1 Vdd pin. 1 GND pin.
But I can't make it swing. Output is 0v. If it did oscillate, a volt meter would read about 2.5v as in 5v half the time and 0v half the time, right?
Do I need to use a capacitor?
How should I connect it?
What value...
Does the 74HCT4060 tick without any external crystal or resistor/capcitor conencted to it? Mine seems to do so...
The 4060 is worhtless, because it lacks count number ten. It is a mad chip, a bug.
I'll get the 4020 tomorrow, it has 11 counting pins in a row. Then I'll finally build my little...
Most pones and webcams have rolling shutters, but we'll see!
https://www.youtube.com/watch?feature=player_embedded&v=TKF6nFzpHBU
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Using the 3rd last output as the input of the next one, yes I figured that out as soon as I shut down the computer yesterday night. The...
See point 7 in the datasheet for ripple counter 4060:
**broken link removed**
It skips the first three cycles. So if I cascade two of those counters, there will be three blind spots between them, right? What an utterly stupid design!!! Is there a way to connect them to avoid that?
Can anyone...
I've got a record of ending up in an escalating mess, and I don't like it. This time I realised the problem beforehand, I will take advantage of it. Just found stuff like this to simplify it quite a bit:
https://www.electrokit.com/ledx8-gemensam-katod.46116
I suppose it's straight forward to...
I want to measure two timing properties of my smartphone camera:
1) How long does it take for its rollings shutter to read an image top to bottom?
2) Exact how long time is there between the shutter openings of two specific consecutive photos?
For this purpose I thought I would build a binary...
Texas Instrument has a zigbee 2400 MHz chip CC2530 with up to 4.5 dBm (2.8 mW), and an NFC 13 MHz chip TRF7970A with up to 23 dBm (200 mW). Does this mean that the NFC has longer distance range than the zigbee, because it transmitts with 70 times more power? Or does lower frequency require...
I was looking for something accessable to the amateur, and TI CC2530 seems to be perfect, thanks Genovator! -28 to 4.5 dBm is about a factor 2000 in watts, I think. Pretty good range.
I wonder if anyone here has heard of any ZigBee, Bluethooth, Wifi or RFID or any other kind of radio transmitting equipment, for which it is possible to alternate the transmission strength and hence its range distance. Any kind of example would do. Any suggestion of a ~2.4 GHz module which...
I would like to use NFC transmitters with about 5 meters practical working range (to a smart phone with built in NFC receiver), that's about 100 times the normal NFC range. Has anyone heard of "long range NFC"?
Is it feasible for a newbie hobbyist to build a prototype long range NFC transmitter...
I want to partially shield bluetooth antennas so that their ranges are reduced. My motive is that I want to use reception or non-reception as a means of measuring indoor location (of my mobile phone with simple software for that purpose) with a room by room resolution. Bluetooth is by standard...
Ah, so if I understand it correctly, on page 5 in this datasheet:
http://www.datasheetcatalog.org/datasheet2/c/0hex3d1gxjejda7ur3y2toipkzfy.pdf
the current for the output and reset pins are given in terms of mA (0.1 to 100). Therefor they can be considered to be internally pulled? Although it...
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