In preparation for the burn, it’s time to charge the batteries I use for my solar setup. I was surprised to find them registering only 5 volts on my multimeter; something in the solar regulator must have been discharging them. This at least gave me an opportunity to see how long they take to charge from empty and how much power that uses.
Power to charge 12V 140AH battery 10h
For years I have generated rainbows using the Wheel() function in Adafruit‘s NeoPixels library. While convenient, the linear transition between the primary colors resulted in significantly dimmer colors in between the primaries. Playing around today, I improved the result by using a quadratic equation to accelerate each color component’s journey from 0 to 255.
In my Arduino projects, I had been using the typical pattern of seeding the pseudo random number generator with a reading from an analog pin like randomSeed(analogRead(A0)). Anecdotally, the results seemed nowhere near random. If I had a program that selected from three modes, the first mode would be the selected mode the majority of the time.
I am me! I’m also a scientist minded software engineer who loves reading, running, listening to music, and recording photos and videos and data of all sorts. After earning a biochemistry degree, I lived in San Francisco and Tokyo, and now I find it difficult to stay put. Read more about me and my online life.
SF: 87% complete; Oakland: 27%
San Francisco Bay Area running progress
Charlie says: “What a wonderful region!”
30 November 2022
In-N-Out Burger (Fast Food Restaurant)
333 Jefferson St , San Francisco , CA
Charlie says: “It was super hot and we got a taste for salty fries, but by the time we walked there it dropped 35° and was cold. Still tasted good!”
28 September 2020 at 20:32
Taqueria Zorro (Mexican Restaurant)
308 Columbus Ave , San Francisco , CA
Charlie says: “Restaurants are hoppin’ around here, feels weird.”
26 September 2020 at 19:42
碼頭老火鍋 (Hotpot Restaurant)
仁愛路四段409-1號 , Da’an District , T’ai-pei Shih
Charlie says: “Delicious spicy hot pot with Harry. I am so full!!”
25 March 2020 at 08:40
桶好呷滷味 (Asian Restaurant)
, Taipei
Charlie says: “We pick a representative set of ingredients and they build out the rest into a braised soup like thing over noodles.”
23 March 2020 at 06:46
Addiction Aquatic Development (上引水產) (Fish Market)
民族東路410巷2弄18號 , Taipei
Charlie says: “Standing sushi bar at a fish market.”
21 March 2020 at 07:03
ACME Breakfast CLUB (Breakfast Spot)
3F., No. 10, Ln. 27, Chengdu Rd., , Taipei
Charlie says: “Brunch w/ Shawn! Was tempted to get the avocado toast kind of as a joke since I never get it in SF, but resisted, sourdough was good. :-)”
20 March 2020 at 22:27
三甲和風創意料理 (Japanese Restaurant)
Charlie says: “Late dinner with Shawn, at a lovely place!”
20 March 2020 at 09:28
中央藝文公園 Central Culture Park (Park)
北平東路與紹興北街口 , Taipei
Charlie says: “Social distance.”
20 March 2020 at 03:42
虎頭山環保公園 (Scenic Lookout)
Charlie says: “Exploring the hillside in Taoyuan City.”
14 March 2020 at 23:49
Abura-Ya (Japanese Restaurant)
362 17th St , Oakland , CA
Charlie says: “Dinner with Beam before Sarah McLachlan!”
24 February 2020 at 18:55
