微信群里做成的那位不是你么

晚上推到重来，做了一个新的设计。
让一个底板同时兼容ESP8266和ESP32模块。
很可能要延至年后打样了，争取年前吧。

长得像顶级域名的二级域名

夜深了，年轻人不要老熬夜

换成 DHT22 对比了一下 DHT11，温度基本上一致。湿度数值与 DHT11 相差 3%。


DHT11 vs DHT22
We have two versions of DHT sensor, they look a bit similar and have the same pinout, but have different characteristics. Here are the specs:

DHT11

Good for 20-80% humidity readings with 5% accuracy Good for 0-50°C temperature readings ±2°C accuracy No more than 1 Hz sampling rate (once every second)

Ultra low cost
3 to 5V power and I/O
2.5mA max current use during conversion (while requesting data)
Body size 15.5mm x 12mm x 5.5mm
4 pins with 0.1" spacing
DHT22

Good for 0-100% humidity readings with 2-5% accuracy Good for -40 to 125°C temperature readings ±0.5°C accuracy No more than 0.5 Hz sampling rate (once every 2 seconds)

Low cost
3 to 5V power and I/O
2.5mA max current use during conversion (while requesting data)
Body size 15.1mm x 25mm x 7.7mm
4 pins with 0.1" spacing
As you can see, the DHT22 is a little more accurate and good over a slightly larger range. Both use a single digital pin and are 'sluggish' in that you can't query them more than once every second (DHT11) or two (DHT22).

引脚悬空就是这样的。需要接外围电路

@九年吃菜粥 和 arduino 的国产兼容板相比，暂时没有什么优势，要说的话，官方版本价格有优势。arduino 官方版本价格不菲。

开源链接：https://github.com/peng-zhihui/HoloCubic
膝盖好痛

@RaspiSQH 估计是系列中首款产品，试试水
然后要加内存的话感觉会很快，参考树莓派1G到8G用了几个版本迭代就实现了，EMMC 也到了 32G。
配合大内存的树莓派作为主控来用也是一个选择。

微积分

@Tony 大概是的

@RaspiSQH 缺货，然后淘宝各商家已经限购了。小确幸估计 3 月左右发吧如果到时候有货的话。

挺好看的啊，对温度有要求吗

@wuli https://www.raspberrypi.org/forums/
官方论坛这是

用 OLED 屏幕 + ESP8266 可以 DIY 一个带 WIFI 的开源项目，目前还没看到有人做。

@RaspiSQH 哈哈哈

撰稿人api

不了解。。

研发路漫漫，耐得住寂寞

Spoony

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