A math practice toy — Trust is earned, not givenhttps://www.bobhuang.com/series/math-practice-toy/A math toy for kids built up part by part: a 16x2 LCD, mixed questions and scoring, a 128x64 graphics display, and an ESP8266 clock with NTP time and auto-dimming.en17 Nov 2019 12:00:00 GMTA math practice toy, part 4: WiFi clock, NTP time and auto-dimming on ESP8266https://www.bobhuang.com/blog/706/math-toy-part4-esp8266-wifi-autodim/https://www.bobhuang.com/blog/706/math-toy-part4-esp8266-wifi-autodim/17 Nov 2019 12:00:00 GMTThe final form of the math toy, ESP12-MathToy-SPI-New12864, moves from Arduino Nano to ESP8266 (an ESP-12 module) and adds the three features only WiFi makes…A math practice toy, part 3: A 128x64 graphics LCD and bigger fontshttps://www.bobhuang.com/blog/705/math-toy-part3-12864-graphics-lcd/https://www.bobhuang.com/blog/705/math-toy-part3-12864-graphics-lcd/08 Sep 2019 12:00:00 GMTPart 3 of the series, Nano-MathToyMix100-12864, replaces the 16-character text LCD with a 128x64 pixel graphics LCD (the "12864" module family, ST7565/ST7920…A math practice toy, part 2: Mixed questions and a score system on the Nanohttps://www.bobhuang.com/blog/704/math-toy-part2-mix100-1602/https://www.bobhuang.com/blog/704/math-toy-part2-mix100-1602/22 Jun 2019 12:00:00 GMTPart 2 of the math-toy series, NANO-MathToyMix100-1602, adds what a practice tool actually needs to hold a child's attention: mixed question types (addition…A math practice toy for kids, part 1: Plus and minus on a 16x2 LCDhttps://www.bobhuang.com/blog/703/math-toy-part1-plusminus-1602/https://www.bobhuang.com/blog/703/math-toy-part1-plusminus-1602/19 May 2019 12:00:00 GMTThis is the first in a series of articles about a project that grew for years: a math practice toy for my kids, built from spare parts. Part 1 is the simplest…