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Recent Forum Posts

Re: How can I reduce ADC drift

Yes, it is.
Demon Today, 00:02

Re: Calculating Sunrise and Sunset 2

black is my attempt at a straight line.... follows actual times fairly close enough to actual exact times. It is just adding and subtracting X minutes each day for 1/2 a year then switching the...
amgen Yesterday, 12:22

Re: How can I reduce ADC drift

The Vdd that resistors are connected to, is the exact same point that PIC Vdd pin is connected also?

Ioannis
Ioannis Yesterday, 10:56

Re: How can I reduce ADC drift

Based on the fact that you are using Power Supply as a reference voltage for the ADC:

1. the Power Supply noise is random and in the length of time it would have very minimal effect on the adc...
Ioannis Yesterday, 10:50

Re: Calculating Sunrise and Sunset 2

table example here ... https://www.suntoday.org/sunrise-sunset/2024.html

Alain
Acetronics2 Yesterday, 10:01

Re: How can I reduce ADC drift

the first step is to measure the noise on the power rail and then to determine if that's an issue, there is no point adding a regulator for the pots if the adc pos reference is noisy
richard Yesterday, 05:30

Re: How can I reduce ADC drift

I use a DC-DC converter to lower 12V down to 5V for the entire circuit.

Would a dedicated 7805 for the pots be a "meaningful" improvement?

I'll have up to 10 pots in the final circuit. Right...
Demon Yesterday, 04:36

Re: How can I reduce ADC drift

50mV of noise on the power supply would do that.
using FVR as adc ref might help a little and or a better regulator for the pots
richard Yesterday, 04:12

Re: Calculating Sunrise and Sunset 2

Depending on your application, the approach you take to solve your problem could differ.

For a changeable lattitude, longitude, Height above sea level, DST the calculation is not trivial. The...
Jerson Yesterday, 04:12

How can I reduce ADC drift

16F18877

- Using fixed input on ADC pin (1K to VDD, 1K to VSS - simulating pot at 50%)
- The ADC will drift from 498 to 509.

HSEROUTs on Serial Communicator:

Is there anything in the...
Demon Yesterday, 03:34

Legal Stuff (in no particular order)
Knowing our Customers

In order for us to keep accurate records of who we have exchanged information with, regardless of whether a supply of goods or services takes place, we require certain information from you, before we enter into discussion or execute a financial transaction. ...

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Quality
Our aim is to deliver the highest possible quality products and services.

It is our intention to meet or exceed our customers' expectations, always.

Our Quality Management System is based upon a policy of continual improvement.

We operate quality processes that meet, as a minimum, the requirements of ISO 9001-2000 and the processes are continually monitored for effectiveness.

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Terms and Conditions of Sale

Our standard terms are conditions are available here in adobe acrobat format. If you do not have acrobat reader, you can ...

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RoHS Statement

Crownhill Associates operates a quality system compliant with ISO9001:2000 covering all aspects of its operations. Crownhill are also able to manufacture products with full component level traceability where required by its clients. Our quality system and documentation are open to review by our clients at our discretion. ...

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Data Protection / Privacy Policy
We are committed to protecting your privacy, and we will only use the information that we collect about you lawfully (in accordance with the Data Protection Act 1998). ...

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Environment and WEEE

Our contribution (WEEE)
Through our efforts we are contributing to the re-use, recycling and other forms of recovery of WEEE under thes regulations.

If you have purchased from us, something that could be described as 'E.E.E.'('Electrical and Electronic Equipment') , then when you dispose of it, it becomes 'W.E.E.E.' (the 'W' stands for 'waste') and it therefore needs to be disposed of correctly. You may do this yourself, but if you'd rather not, then contact us, we will dispose of it for you, in the correct way. Which we will do, and we won't charge you for it.
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