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Comments

Author Comment Last activity Moderation
ggallant "A friend with 3D printer made these battery holders for the riffle. She printed two sets with slightly different inside diameters. I have a loose o..." | Read more » almost 4 years ago
ggallant "I just got a new laptop with Windows 10. Installed the Arduino IDE and plugged in the riffle. Couple of sounds relative to a new device being plugg..." | Read more » almost 4 years ago
ggallant "Don, I have a small list of suggested modifications, all dealing with power. What / where / when is it appropriate to comment? George " | Read more » about 4 years ago
ggallant "D5 appears to connect the INT/SQW on the RTC to PD5 on the CPU. I would be very interested in how one uses the feature. I'm assuming that it requir..." | Read more » about 4 years ago
ggallant "Chris, I really don't know the actual time but assuming 800usec (nice for the math) to sleep and wake up it would be 800 / 8,000,000 or 0.01% whi..." | Read more » about 4 years ago
ggallant "I think 8 seconds is the "maximum" interval with a 16MHz crystal. You wake up every 8 seconds and can go back to sleep if there is no work to be do..." | Read more » about 4 years ago
ggallant "I'm impressed but I would have been AWED if it had been done with levitation. " | Read more » about 4 years ago
ggallant "What a great article!! " | Read more » about 4 years ago
ggallant "I think the 500ma that can be supplied by the host USB port can be misleading. The spec says it must be able to supply 100ma and can switch to 500m..." | Read more » about 4 years ago
ggallant "Mathew - This is probably the result of a capacitor discharging, C9 is only 0.1uf. I suspect that C14 needs to be much larger (100uf) or add multi..." | Read more » about 4 years ago
ggallant " This is a screen shot of the noise spike when turning on power to the SD card. The yellow signal is the CPU D10 line being used as a sync signal...." | Read more » about 4 years ago
ggallant "I have isolated it to the SD card power turn on. There is 100% repeatable noise spike that is 1.3usec long and drops 1.9V below 3.3V. Trying to upl..." | Read more » about 4 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 » about 4 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 » about 4 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 » about 4 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 » about 4 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 » about 4 years ago