| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| pdhixenbaugh | "Hi Ben, checking in here -- have you used this design any further? A few folks would be very interested to see what kinds of accuracy and precision..." | Read more » | almost 7 years ago | |||
| pdhixenbaugh | "Ben, thank you for that explanation, it is very helpful in understanding many of the challenges and solutions presented by conductivity field measu..." | Read more » | over 7 years ago | |||
| bhickman | "Hello pdhixenbaugh, I like how you have colored the schematic, makes things much clearer. As for your questions, I'll try and answer them. Firstly..." | Read more » | over 7 years ago | |||
| pdhixenbaugh | "Hi Ben, There is a lot to dive into here. I would really like to learn how this circuit works. I'm also new to this, and have a lot of questions. T..." | Read more » | over 7 years ago | |||
| rfdave | "Thanks. I'm thinking about a Water quality Staff made from PVC with temperature, conductivity, and turbidity sensors build in, so I'm not thinking ..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi ggallant. Your design files look great! I'm going to have to look into openscad. As far as a server, I don't think publiclab has one. I think mo..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi rfdave. To my knowledge the only requirements is that the electrodes be inert. I chose graphite because I had some laying around and its cheap. ..." | Read more » | almost 8 years ago | |||
| rfdave | "I've got a question. Is there any reason you couldn't use metallic electrodes instead of the graphite? Stainless steel would be more rugged and po..." | Read more » | almost 8 years ago | |||
| ggallant | "I parked the openscad design files at https://www.dropbox.com/sh/mzp8gketcuqufkq/AADkG_kmo2xcL3iWYOLi4YCxa?dl=0 If there is a better place, such a..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi ggallant. I'm definitely interested in what you have put together. I'll check out openscad to see what you have. As for the pipe and air bubble..." | Read more » | almost 8 years ago | |||
| ggallant | "I have decided to suspend my current turbidity sensor and instead adapt yours to my base station. If it is of interest I have modeled the mechanica..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi donblair, thanks. There is still a bit of development to be done, especially for extended deployments, but I think the design shows promise. I ..." | Read more » | almost 8 years ago | |||
| donblair | "Ben, Fantastic job on this! Excellent descriptions of the entire system -- the electronics, the probe design, and the calibration procedure. Ver..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi ggallant. Sounds interesting. I'm trying to picture your design, but I'm not sure if I have it right. Can you post a picture? I definitely thin..." | Read more » | almost 8 years ago | |||
| ggallant | "My current led and sensor boards are 6 sided and designed to attach to hardware store 3/4 plugs with plenty of epoxy and silicone sealant. Next rev..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi ggallant. I'm using Texas Instrument's Tiva microcontroller which has a couple pins that allow you to tap into the bus power (5V at 1A). For sho..." | Read more » | almost 8 years ago | |||
| ggallant | "The LED is specified at 100ma. This "should" need a driver transistor. Outputs pins from the CPU are typically rated at 25ma max. " | Read more » | almost 8 years ago | |||
| bhickman | "Hi gretchengehrke, thanks. To answer you questions: (1) I'm using this LED and this photodarling as the detector. The LED has a maximum output at 8..." | Read more » | almost 8 years ago | |||
| gretchengehrke | "Hi @bhickman, this is great. Other folks (mostly @donblair) have been working on developing a turbidity sensor too. I have a couple of questions wi..." | Read more » | almost 8 years ago | |||
| bhickman | "Hi ggallant. To answer your questions: 1. Yes, the unit is intended for submerged operation. So far I have only had it submerged in beakers in the ..." | Read more » | almost 8 years ago | |||
| ggallant | "Couple of questions: 1. Is the unit intended for submerged operation? 2. Extended deployment? 3. How is the water cycled to the chamber? 4. What ar..." | Read more » | almost 8 years ago | |||
| majer | "me to :) " | Read more » | over 8 years ago | |||
| JeanellSullivan | "I will be attending! " | Read more » | about 9 years ago | |||
| abbeyghart | "I will be attending! " | Read more » | about 9 years ago |