Arduino: GPS serial level shifting - Revision history

Onnowpurbo at 22:27, 20 June 2018

2018-06-20T22:27:19Z

← Older revision		Revision as of 22:27, 20 June 2018
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	Banyak orang yang menyatakan bahwa anda tidak perlu mengubah level pada saluran TX / RX, tetapi dapat merusak perangkat 3.3V, dan perangkat 5V mungkin tidak membaca level logic 3.3V dengan benar (data yang diterima tidak baik).		Banyak orang yang menyatakan bahwa anda tidak perlu mengubah level pada saluran TX / RX, tetapi dapat merusak perangkat 3.3V, dan perangkat 5V mungkin tidak membaca level logic 3.3V dengan benar (data yang diterima tidak baik).


			==Cara Lain==

			Beli di bukalapak card level shifter 3.3V - 5V harga sekitar Rp. 4-5000,-an

			[[File:Dgr97.jpg\|center\|400px\|thumb]]

Onnowpurbo at 02:42, 20 June 2018

2018-06-20T02:42:36Z

← Older revision		Revision as of 02:42, 20 June 2018
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	~~I'm not sure what @Chagrin and @santosusana are describing~~, ~~but it's not a voltage divider~~.		Sebaiknya menggunakan level-shifter asli yang menggunakan FET. Mahluk tersebut cepat, dan anda dapat menggunakannya untuk SPI interface, seperti kartu SD, dan mereka bi-directional (5V ke atau dari 3.3V). Dan harganya murah.

	I always recommend real level-shifter modules that use FETs. They're fast, so you can also use them for SPI interfaces, like an SD card, and they're bi-directional (5V to or from 3.3V). And they're cheap.		Berikut ini cara melakukannya dengan beberapa resistor dan dioda sembarang:

	~~Here's how to do it with a few resistors and almost any diode~~:


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	R3 ~~should be~~ 2.2k to 22k.		R3 = 2.2k s/d 22k

	~~R1 and R2 should be chosen so that~~

	1) R1 + R2 ~~is 5k to 50k~~		R1 & R2 harus dibuat agar

	2) R2 ≈ 2 * R1		* R1 + R2 = 5k s/d 50k
			* R2 = 2 * R1

	~~For example,~~ R1 = 4.7k ~~and~~ R2 = 10k ~~would work (~~R1+R2 = 15k, 10k ≈ 2 * 4.7k).		Contoh
			* R1 = 4.7k
			* R2 = 10k
			disini R1+R2 = 15k, 10k ≈ 2 * 4.7k.

	~~Lots of people claim that you don't really need~~ level~~-shifting on the~~ TX/RX ~~lines~~, ~~but it can damage the~~ 3.3V ~~device~~, ~~and the~~ 5V ~~device may not read the~~ 3.3V ~~logic levels correctly~~ (~~bad~~ data ~~received~~).		Banyak orang yang menyatakan bahwa anda tidak perlu mengubah level pada saluran TX / RX, tetapi dapat merusak perangkat 3.3V, dan perangkat 5V mungkin tidak membaca level logic 3.3V dengan benar (data yang diterima tidak baik).

Onnowpurbo: Created page with "I'm not sure what @Chagrin and @santosusana are describing, but it's not a voltage divider. I always recommend real level-shifter modules that use FETs. They're fast, so you..."

2018-06-14T12:02:10Z

Created page with "I'm not sure what @Chagrin and @santosusana are describing, but it's not a voltage divider. I always recommend real level-shifter modules that use FETs. They're fast, so you..."

New page

I'm not sure what @Chagrin and @santosusana are describing, but it's not a voltage divider.

I always recommend real level-shifter modules that use FETs. They're fast, so you can also use them for SPI interfaces, like an SD card, and they're bi-directional (5V to or from 3.3V). And they're cheap.

Here's how to do it with a few resistors and almost any diode:

[[File:Level shift.png|center|400px|thumb]]

R3 should be 2.2k to 22k.

R1 and R2 should be chosen so that

1) R1 + R2 is 5k to 50k

2) R2 ≈ 2 * R1

For example, R1 = 4.7k and R2 = 10k would work (R1+R2 = 15k, 10k ≈ 2 * 4.7k).

Lots of people claim that you don't really need level-shifting on the TX/RX lines, but it can damage the 3.3V device, and the 5V device may not read the 3.3V logic levels correctly (bad data received).