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Started by rincon, December 20, 2021, 12:21:20 PM
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QuoteWe wondered recently about those crude ASCII schematics you see in some documentation — are there any dedicated schematic-focused tools to draw them, or are they just hand-crafted using various ASCII-art drawing tools? To our surprise, there is such a tool. It is called AACircuit and was developed by [Andreas Weber]. It has a history going back to 2001 when it was first introduced as ASCIIPaint.
QuoteAutodesk Tinkercad: Tinkercad is - easy-to-use, browser based 3D design tool. With Tinkercad you can create 3D printable items:EasyEDA: EasyEDA - Web-based EDA suite; runs in browser. Schematic capture, Ngspice based simulation, PCB layout, custom PCB manufacturing, for electronic engineers, educators, students and hobbyists.Autodesk Circuits: Autodesk Circuits empowers to get ideas to lifeUpverter: Ideation tools, schematic capture, PCB layout, design - with parts library management,Schematics: Schematics.com empowers engineers to design, share, and collaborate on circuit design online.TINA: TINA Design Suite is a powerful circuit simulation package for analyzing, designing, and real time testing of analog, digital, .Circuit Diagram: Circuit Diagram - free application for making electronic circuit diagrams and exporting them as images. Design circuits online in your browser or using the desktop application.
Glass- electrode +---------------+ +---------------+ +---------------+ -----------| | | | | micro- | | mV | |a/d-converter | | | | -----|-----| |--------- processor | reference |------| Amplifier | | | | | | electrode | | | | | | | | | +---------------+ | +---------------+ +---------------+ | +---+ | | | | | | | |r1 | | +---+ | | | | |---------------------------| | | +--------------+ | | | +-|-+ | | | | | display | | |r2 | | | | | | +---+ +--------------+ | | | -----
Quote from: Keith on December 20, 2021, 01:37:14 PMMany thanks for this review of useful, on-line circuit design facilities. Searching for "linux circuit design software" gets number of Linux-specific sites that readers might be interested in also.Keith
QuoteIt is important to keep in mind that only temperature dependent readings can be considered scientific grade pH readings. Without adding temperature information to your reading request the pH Circuit will use a default temperature of 25 C°.
QuoteThere have been several postings here where someone is trying to get a Grove-Pi/Grove-Pi+ working and it fails no matter what they try.The eventual root cause of this failure is that the individual downloaded and installed Raspbian Bullseye.It should be noted that the Dexter Industries libraries for the Grove-Pi are not yet compatible with Bullseye.The solution is to flash your SD card with the Raspbian Buster image located here:https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os-legacyThen run the "curl" commands in the installation guide for the Grove-Pi.If you are using a Pi-4, this version of Raspbian is mandatory as other, earlier, versions will not boot on the Raspberry Pi-4.Edit:Updated the link to point to the official download site for the "legacy" version of Raspbian.
QuoteTanger,I've used neither the PI computer nor a pH meter, so can't really advise you, but here are my comments on the two that you suggest:I note that the Atlas Scientific EZO has a pH resolution of +/-0.002 - do you really need that high resolution?
QuoteIt costs $42 and seems to require a separate probe that you will have to buy. The circuit board looks a bit rough. The websites that I've searched for this product say it is not available at present. The DFRobot is about the same price but comes with a probe. The pH resolution is only +/-0.1 which is probably OK for most people (only the user can decide that) and the whole assembly look very professional. I note that this product is still available. Hope that helps a little.
QuoteI understand that Arduinos are "better", because they can be powered up to take a reading and powered down again, much better than a PI would - which will preserve any battery for longer