EnviroDIY | hank | Activity https://www.envirodiy.org/members/dsjl/activity/ Activity feed for hank. Wed, 22 Apr 2026 16:03:36 -0400 https://buddypress.org/?v= en-US 30 hourly 2 4c0fb5b8351c097295c5cea1a4520e67 hank replied to the topic pH Sensor Recomendations in the forum Environmental Sensors https://envirodiy.org/topic/ph-sensor-recomendations/#post-2346 Wed, 06 Sep 2017 18:23:15 -0400 I know folks have gone the “cheaper” route with atlas sensors (https://www.atlas-scientific.com/ph.html) but i’ve worked more with Hach environmental/YSI as more field water quality industry standard. I also check In Situ (multi-sensor platforms) or Fondriest (distributor of various sensor vendors) every now and then.

As far as I know, pH probes…[Read more]

]]> 69eee803b35de6d7f7c4c83b01e157cc hank replied to the topic Recording data from pressure sensors on an SD card in the forum Mayfly Data Logger https://envirodiy.org/topic/recording-data-from-pressure-sensors-on-an-sd-card/#post-2221 Fri, 05 May 2017 20:55:07 -0400 in your main loop function, somewhere in lines 44-47 you need to call:

logData(dataRec);

]]> c91398b90940279f77f6db50265687b0 hank replied to the topic Optical dissolved oxygen solutions? in the forum Environmental Sensors http://envirodiy.org/topic/optical-dissolved-oxygen-solutions/#post-1927 Wed, 11 Jan 2017 21:52:19 -0500 Hey Thomas,

– No, I haven’t seen optical DO probes less than 350, but I’ve only used PME minidots (onboard logger and should fit under a dome; ~1k) and Hach Hydrolabs (multiparamater sondes that are likely too big for domes; several K). Electrochemical/Clark-cell DO probes may be another option (calibration will drift more). If you only need a…[Read more]

]]> 6d298d8d5e7f43f22b038592a10c2c57 hank replied to the topic Atlas Scientific EZO sensors in the forum Miscellaneous http://envirodiy.org/topic/atlas-scientific-ezo-sensors/#post-1645 Fri, 15 Jul 2016 21:17:57 -0400 yeah, the library is for sdi12 sensors.

]]> 85e73e4b5af855cd0d75f59c7ca38a9b hank replied to the topic Atlas Scientific EZO sensors in the forum Miscellaneous http://envirodiy.org/topic/atlas-scientific-ezo-sensors/#post-1641 Wed, 13 Jul 2016 23:05:34 -0400 Somewhere on the site, it recommended a Sodaq DS3231 library, which is similar to the Mayfly. Make sure the coin battery is in.

I used the example to set the clock (took me ~10 sec to upload): https://github.com/SodaqMoja/Sodaq_DS3231/blob/master/examples/adjust/adjust.pde

Then before powering down, I upload the code for data-logging. If you…[Read more]

]]> 9ad037c780d8df32a44310570a4f3133 hank replied to the topic Cellular telemetry for remote locations in the forum Mayfly Data Logger http://envirodiy.org/topic/cellular-telemetry-for-remote-locations/#post-1634 Fri, 01 Jul 2016 02:50:17 -0400 Way late response. Was checking the forum about any issues from batch v3.0.

From pricier logger/DAQ setups, i’ve seen Raven cell modems from Sierra Wireless (with NexSens data loggers and NI cRio data acquisition the Raven modems). Not sure if folks have combined the modems with any Arduino boards.

Board-wise, I know of the FONA board from…[Read more]

]]> 1e4b84190ec0a24c63a2e7c3e5a91e5c hank replied to the topic [rtc] time kept without power (has cr1220)? in the forum Mayfly Data Logger http://envirodiy.org/topic/rtc-time-kept-without-power-has-cr1220/#post-1612 Tue, 28 Jun 2016 15:50:38 -0400 Thanks. A colleague, who’s more pro at soldering, got a bit on the pad. RTC kept the time in an overnight off state.

I tried to apply some solder on the negative battery terminal, but couldn’t get and to stick (probably due to some plating).

Anyways, onto figuring out sleep modes and xbee data pushing hehe. Thanks again! -h

]]> f32d9a28ce579936df1d0fc372d9ff41 hank replied to the topic [rtc] time kept without power (has cr1220)? in the forum Mayfly Data Logger http://envirodiy.org/topic/rtc-time-kept-without-power-has-cr1220/#post-1601 Fri, 24 Jun 2016 15:38:56 -0400 Yep, it read 0V on the backside pins. Only 1 Mayfly to test with, (another on its way). I’ll look into batteries. I just passed by the Batteries Plus store for the CR1220.

I believe it’s Nuon brand, but has a “textured” backside: https://www.batteriesplus.com/battery/lithium/1220?q=cr1220

I’ll swing by the BestBuy or look for the Energizer…[Read more]

]]> 807043a03cd499a331c955306a88cbbd hank replied to the topic [rtc] time kept without power (has cr1220)? in the forum Mayfly Data Logger http://envirodiy.org/topic/rtc-time-kept-without-power-has-cr1220/#post-1594 Fri, 24 Jun 2016 00:32:04 -0400 Attached. Thanks again for taking your time. Sorry for the time sink. -h

]]> 10cf187009cd33612f36382e1f78d9c1 hank replied to the topic [rtc] time kept without power (has cr1220)? in the forum Mayfly Data Logger http://envirodiy.org/topic/rtc-time-kept-without-power-has-cr1220/#post-1591 Thu, 23 Jun 2016 23:30:08 -0400 Thanks for the timely replies!

Mine read out zero with positive on the battery housing and ground on the microSD. Pic hopefully attached. (Board in off state and not plugged via USB). Note, i did also change a jumper on one of the Grove connectors to 5V, no sensor/cables attached.

The battery itself is 3V outside of housing. -h

]]> f257387c5d72b996d405eb20037e67c4 hank replied to the topic [rtc] time kept without power (has cr1220)? in the forum Mayfly Data Logger http://envirodiy.org/topic/rtc-time-kept-without-power-has-cr1220/#post-1591 Thu, 23 Jun 2016 23:30:08 -0400 Mine read out zero with positive on the battery housing and ground on the microSD. Pic hopefully attached. (Board in off state and not plugged via USB). Note, i did also change a jumper on one of the Grove connectors to 5V, no sensor/cables attached.

The battery itself is 3V outside of housing.

-h

]]> e9c37edc439a007c8743980d43e838de hank started the topic [rtc] time kept without power (has cr1220)? in the forum Mayfly Data Logger http://envirodiy.org/topic/rtc-time-kept-without-power-has-cr1220/ Thu, 23 Jun 2016 18:44:37 -0400 Hi relatively new to arduino’s (mostly edit other’s codes). So i have the Mayfly board (CR1220 positive terminal facing up) and am using example from Sodaq RTC library to set the time and then commenting out line 19.

Sodaq example code with line #’s: https://github.com/SodaqMoja/Sodaq_DS3231/blob/master/examples/adjust/adjust.pde

After:
1.…[Read more]

]]> 630f4b2e49347deda0e77cf053e77e85 hank became a registered member https://www.envirodiy.org/activity/p/1626/ Thu, 23 Jun 2016 18:28:50 -0400 0