Re: [Dorset] CV148 Description and Spec

Hi Terry On 06/06/18 15:44, Terry Coles wrote: I'm not sure that I understand that. My 1-Wire Temperature Sensors (https:// www.amazon.co.uk/gp/product/B00HCB8GLU/ref=oh_aui_detailpage_o01_s00? ie=UTF8=1) only have three wires; +3.3 V, 0 V and data. When I connect them to my Pi I can read the

Re: [Dorset] CV148 Description and Spec

On Wednesday, 6 June 2018 16:06:28 BST Ralph Corderoy wrote: > > Yes, but I've yet to find a 1-wire I/O expander. > > https://www.maximintegrated.com/en/products/digital/memory-products/DS2408.h > tml https://datasheets.maximintegrated.com/en/ds/DS2408.pdf Ralph, Do you have a degree in

Re: [Dorset] CV148 Description and Spec

Hi Terry, > Yes, but I've yet to find a 1-wire I/O expander. https://www.maximintegrated.com/en/products/digital/memory-products/DS2408.html https://datasheets.maximintegrated.com/en/ds/DS2408.pdf Cheers, Ralph. -- Next meeting: Bournemouth, Tuesday, 2018-07-03 20:00 Meets, Mailing list,

Re: [Dorset] CV148 Description and Spec

On Wednesday, 6 June 2018 15:10:10 BST t...@ls83.eclipse.co.uk wrote: > With I2C you are typically limited to just a small number of identical > devices on the same bus, as they come preprogrammed with a 7-bit > identifier, with the ability to change perhaps 1 or 2 of those bits (but > if there

Re: [Dorset] CV148 Description and Spec

Hi Terry On 06/06/18 13:53, Terry Coles wrote: Pros and Cons of I2C and 1-wire Interfaces: This is to communicate with multiple devices connected to a Raspberry Pi. Two fundamental elements are relevant. I2C (literally Inter-Integrated Circuit) is only good for short distances, but has the

Re: [Dorset] CV148 Description and Spec

On Wednesday, 6 June 2018 12:18:43 BST Ralph Corderoy wrote: > A couple more things from last night. > > In 1942, silver was available when copper was in short supply so > $1,000,000,000, in 1942's terms, was used to build a centrifuge. They > went to some effort to retrieve every scrap

Re: [Dorset] CV148 Description and Spec

Hi Terry, > Peter has brought a bit of history to the Meeting; a CV148 infrared > image converter, dating from the late 40s. A couple more things from last night. In 1942, silver was available when copper was in short supply so $1,000,000,000, in 1942's terms, was used to build a centrifuge.

[Dorset] CV148 Description and Spec

Hi, Peter has brought a bit of history to the Meeting; a CV148 infrared image converter, dating from the late 40s. Here is the link to the description and spec: http://www.tubecollector.org/documents/cv14x.htm -- Terry Coles -- Next meeting: Bournemouth, Tuesday,