EnviroDIY | Bert Rubash | Activity https://www.envirodiy.org/members/rubash/activity/ Activity feed for Bert Rubash. Fri, 01 May 2026 03:16:46 -0400 https://buddypress.org/?v= en-US 30 hourly 2 54b9dbc74210388819952def5847bd7e Bert Rubash replied to the topic Mislabeled grove pins in the forum Mayfly Data Logger http://envirodiy.org/topic/mislabeled-grove-pins/#post-1897 Wed, 04 Jan 2017 03:00:39 -0500 Yup, hacking together my own cable is how I found it.

]]> f15268fbc28a7110ce4d941ca75580d2 Bert Rubash started the topic Mislabeled grove pins in the forum Mayfly Data Logger http://envirodiy.org/topic/mislabeled-grove-pins/ Wed, 04 Jan 2017 01:47:38 -0500 Connector jp4 has the labels for scl and sda reversed on my board, V 0.4. Electrical connectivity is reversed from the labels on the nearby bar of connectors and from the labels on the schematic.

]]> 0c88dcd069b4991aef39f16bdf5542cc Bert Rubash replied to the topic Mayfly availability in the forum Mayfly Data Logger http://envirodiy.org/topic/mayfly-availability/#post-1886 Wed, 28 Dec 2016 01:24:10 -0500 Thanks. It is the single boards that I want so I should soon be able to order.

]]> f6d818bea00222cf2c8d942a4f6db409 Bert Rubash started the topic Mayfly availability in the forum Mayfly Data Logger http://envirodiy.org/topic/mayfly-availability/ Tue, 27 Dec 2016 20:37:47 -0500 Does anyone know when the Mayfly will be available again on Amazon? Is Amazon the only source?

]]> 042c68a5c2ff3ae02cb63697a6b8cc11 Bert Rubash replied to the topic 5-volt boost circuit current capacity in the forum Mayfly Data Logger http://envirodiy.org/topic/5-volt-boost-circuit-current-capacity/#post-1882 Sun, 25 Dec 2016 00:20:51 -0500 I see that the NCP1402 chip on the board is called a 200ma boost chip, so I assume that answers my question.

]]> 16a3660f08891c68f369a332764438ca Bert Rubash started the topic 5-volt boost circuit current capacity in the forum Mayfly Data Logger http://envirodiy.org/topic/5-volt-boost-circuit-current-capacity/ Sun, 25 Dec 2016 00:13:50 -0500 How big a load can the 5-volt boost circuit handle?

]]> 461b7baf1752410a50418a343c052282 Bert Rubash replied to the topic Solar Power Voltage Limit in the forum Mayfly Data Logger http://envirodiy.org/topic/solar-power-voltage-limit/#post-1879 Fri, 23 Dec 2016 06:10:49 -0500 Thanks. Just what I needed to know.

]]> 103ea746d249638a0909e58221e41f9a Bert Rubash started the topic Solar Power Voltage Limit in the forum Mayfly Data Logger http://envirodiy.org/topic/solar-power-voltage-limit/ Fri, 23 Dec 2016 01:44:10 -0500 I notice in the MayFly schematic near the diode for the “v_solar” input a “20V-1A” note. The MCP73831 charge management controller data sheet lists 6 volts as the upper limit for Vdd. I assume I need to pre-regulate solar power down to 5 or 6 volts; is that correct? What does the “20V-1A” note mean?

]]> 37af4b094fa24f49b86a2d62a5f9a264 Bert Rubash replied to the topic Battery Power Options in the forum Mayfly Data Logger http://envirodiy.org/topic/battery-power-options/#post-1857 Mon, 12 Dec 2016 04:09:11 -0500 Thanks, I’ll avoid plugging in two LIPO batteries.

]]> 881c4f84e4035efeae0fc12d0e7a6b72 Bert Rubash replied to the topic Battery Power Options in the forum Mayfly Data Logger http://envirodiy.org/topic/battery-power-options/#post-1854 Fri, 09 Dec 2016 16:43:04 -0500 I have a related question. Why should I not plug two LIPO batteries to the battery jacks. Is it because I would risk too much charging current? If I refrain from charging, wouldn’t having two batteries plugged in simply extend operating time?

]]> a337b520b5acb4def51e8aeb28bdf668 Bert Rubash became a registered member https://www.envirodiy.org/activity/p/1870/ Mon, 07 Nov 2016 00:18:32 -0500 0