作者查詢 / AirLee
作者 AirLee 在 PTT [ Electronics ] 看板的留言(推文), 共58則
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11F推: 通常就是用…15V的控制電壓啊02/25 01:01
29F推: 電源設計本身就是一個很大的技術，光是要把ripple10/08 22:32
30F→: 降低就很頭大10/08 22:32
2F推: 餵狗就一堆資料了.....07/04 15:46
3F→: 用三菱，不如直接學西門子或歐姆龍，好用多了。07/04 15:47
2F→: 目前是打算用nano 透過I2C去讀AD1115這顆4通道16bit的ADC06/14 14:31
3F→: 晶片06/14 14:31
4F→: 只是我看ad1115市售的成品，沒有我要偵測的電壓06/14 14:33
5F→: 這方面電子迴路的設計就不太懂了06/14 14:33
6F→: 如果能outsourcing 給廠商設計接受0-15V的ADC06/14 14:34
7F→: 或許就可以考慮看看價格如何！06/14 14:35
8F→: 只是沒廠商的資源06/14 14:36
11F→: 有精度需求！06/14 19:19
16F→: 0V的部份，不用太精準，會用到的range大概4-12.5有呈線性06/15 01:30
17F→: 即可。06/15 01:30
2F推: Cool !06/14 12:49
4F推: 我都用算的...02/12 07:37
4F推: 先確認溫控接線，然後先分開測試看看02/12 07:41
5F→: pc-200的通訊程式很好寫啊02/12 07:42
6F推: 不然就買兩個rs485 port的通訊模組從新寫程式通。02/12 07:44
7F推: 不過成本增加02/12 07:46
8F推: 我記得歐姆龍的接線有時候是跟別家是相反的02/12 07:49
83F推: 成本問題......02/12 08:18
84F→: 適用的地方問題，加上交流的控制技術進步了02/12 08:18
85F推: 我還有看過德國的惠是痛電橋的電路吃AC5V的02/12 08:22
86F→: 但是他還整成方波，電錶的直流檔位根本量不到02/12 08:24
87F→: 接上示波器才看出來...02/12 08:25
15F推: 成本考慮 智能家電的功能不會需要太多運算06/29 23:57
16F推: 我們公司是傳產 初步有產品就是用這東西寫的06/29 23:59
17F→: 不過我們是用Arduino 的ide開發06/30 00:00
18F→: 官方的太謎 Arduino 一堆資源可以兜根本不用費心開發06/30 00:01
19F推: 高通或聯發科的想法還是把wifi搞了很多功能 結果用不到也06/30 00:03
20F→: 很貴06/30 00:03
21F→: 目前性價比跟開發性 esp8266 是物聯網的王者06/30 00:04
22F→: 物聯網比的是創意 東西都有看你怎麼兜06/30 00:06
5F推: 他不就是用Arduino寫的?06/29 23:54
6F→: 這東西跟LoRa結合可以玩很多東西06/29 23:56