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    如何將 Heltec V3的2.4G彈簧天線改成IPEX === 對 Meshtastic 新手最入門的裝置大概就是 Heltec v3。 但是它的wifi|BT用的天線卻是一個小到不能再小的彈簧天線,而且群友們說它也不是純銅,一拉就斷(有群友想把它拉直讓它收訊更好)。我也有看過把它換成一條直的漆包線,但是如果你想換自己的天線,你也可以學我把它改成IPEX天線座,你甚至還可以接IPEX to SMA然後接膠棒天線! 因為手邊的V3早就改裝完了,所以我拿Wireless Tracker示範。 --- ## 1. 湊齊工具&零件![0001](https://hackmd.io/_uploads/SJ5nsYOqA.jpg) 工具需要: 烙鐵(儘量是溫控的)、鑷子(ESD)、尖銳的東西(要把銅箔刮出來,這裡我用鑷子)、“有鉛”焊錫(無鉛的會跟我第一次改裝一樣焊不上去)、錫油(建議)。 材料:IPEX貼片座(臺灣各大拍賣網站應該都有,或者你願意去光華那種電子街被坑的話我是沒意見啦XD) ![0002](https://hackmd.io/_uploads/r1xyS9_5A.jpg) 要注意訊號跟接地不要焊反了,比較長的是訊號端,是與中心相連的。 --- ## 2. 開始改裝 1. 預熱你的烙鐵(差不多280C~360C,不要太高,怕燒壞板子)。![0003](https://hackmd.io/_uploads/BkqNc9dcC.jpg) 2. 解焊原本的天線(一隻手用鑷子夾住,一隻手用烙鐵加熱)![0004](https://hackmd.io/_uploads/BJ7Bo9Oc0.jpg)![0005](https://hackmd.io/_uploads/ryF9squq0.jpg) 3. 用你的鑷子小心翼翼的將貼片夾到你要焊的位置,然後用尖銳的東西將貼片側邊的地方刮下一點痕跡做記號。注意照我擺放的方向,兩個側邊的地方應該都是接地的銅箔,如果你貼片周圍有蓋到其他走線,或者不是地線的過孔(via)(注意我的板子,天線周圍的過孔都是走地線),那就換個方向或只好放棄這個想法嘍。![0006](https://hackmd.io/_uploads/rJo50qOcR.jpg)![0007](https://hackmd.io/_uploads/S1hxJiOqC.jpg) 4. 把剛剛做記號的地方,再用尖銳的東西刮到有銅金屬的色澤出來(不要刮太深,會把銅箔弄破)。![0008](https://hackmd.io/_uploads/rkl7xjOcR.jpg) 5. 在要焊接的地方都上一點錫油。![0009](https://hackmd.io/_uploads/SJvxbjOq0.jpg) 6. 把中間那個訊號的焊盤先上錫,之後用鑷子把貼片夾到要焊的位置,先焊中間訊號那個地方(注意方向,別焊成空腳了)。![0010](https://hackmd.io/_uploads/BkPEQiO50.jpg)![0011](https://hackmd.io/_uploads/HJxHmiO5R.jpg)![0012](https://hackmd.io/_uploads/Sydr7jO5R.jpg) 7. 最後,將兩邊剛剛刮出銅箔的地方與貼片焊在一起就完工嘍(這時候會有點加熱不均勻的現象,可以試著補一點錫油或者烙鐵接觸久一點)。![0013](https://hackmd.io/_uploads/HyrMHjO5R.jpg) ![0014](https://hackmd.io/_uploads/HkozHodqA.jpg)![0015](https://hackmd.io/_uploads/HkQ88s_qA.jpg) --- ## 3. 測試 恭喜你!你成功把原本訊號極差的天線,變成任何你想要的天線了,我們馬上來看藍芽的訊號強度吧 這是我的天線,最好的也有-16dBm(我走來走去):![0016](https://hackmd.io/_uploads/SJF0PjO5A.jpg) 這是群友的手焊天線:![0017](https://hackmd.io/_uploads/S1yX5odqA.jpg)

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