Search found 6 matches

by gluuuyy
Sat Aug 03, 2024 11:18 am
Forum: Hardware
Topic: What temperature should I use to melt ESP module (WROOM) to PCB, while not melting the solder inside module?
Replies: 2
Views: 1253

Re: What temperature should I use to melt ESP module (WROOM) to PCB, while not melting the solder inside module?

that info is in the data sheet Datasheet says 250℃ peak temperature. But I'm still confused (I'm new to hardware design). Does it mean that the solder inside module won't melt at 250℃, and, let's say we're trying to remove one, at that temperature we can pull the ESP module off the PCB (fast and do...
by gluuuyy
Sat Aug 03, 2024 3:20 am
Forum: Hardware
Topic: What temperature should I use to melt ESP module (WROOM) to PCB, while not melting the solder inside module?
Replies: 2
Views: 1253

What temperature should I use to melt ESP module (WROOM) to PCB, while not melting the solder inside module?

What kind of solder is used inside Espressif's ESP modules? What is the melting point?

When we solder (or remove) by a heating table, at what temperature will the solder inside the module not melt?
by gluuuyy
Thu Jul 11, 2024 11:49 am
Forum: 硬件问题讨论
Topic: ESP系列模组在加热台上焊接时,多少度才不至于使内部锡熔化
Replies: 0
Views: 3363

ESP系列模组在加热台上焊接时,多少度才不至于使内部锡熔化

乐鑫的ESP系列模组内部使用的是哪种锡?熔点多少?

我们自己用加热台焊接(或者拆下时),多少度才不至于熔化模组内部的锡?
因为模组内部我们看不到,若熔化了,夹板子时斜一点、抖一点可能就破坏模组内部了

你们使用加热台焊接时,温度都调多少?焊后拆下再焊,有出过问题吗?
by gluuuyy
Sun Jul 07, 2024 6:26 am
Forum: 硬件问题讨论
Topic: 菜鸟问题:ESP32-C3模组(不带PCB天线的),买哪种外置天线?
Replies: 0
Views: 3074

菜鸟问题:ESP32-C3模组(不带PCB天线的),买哪种外置天线?

计划使用 ESP32-C3-WROOM-02U 模组,不带PCB天线的,自己接个外置天线 想做个体积很小的产品,所以才选用不带PCB天线的模组。看淘宝上有3cm、6cm、10cm等等 的IPEX天线 我是个菜鸟,现在看到淘宝上的这些: A款 IPEX 1代转焊接(113线) B款 IPEX 1代转焊接(137线) C款 IPEX 1代转焊接(178线) D款 IPEX 1代转焊接(113线灰色) E款 IPEX 4代转焊接(0.81线) F款 IPEX 4代转焊接(113线) G款 IPEX 3代转焊接(0.81线) 我该买哪种?请教 顺便请教另一个问题,如果装个3cm天线,与带PCB天线的模...
by gluuuyy
Sat Feb 04, 2023 1:09 pm
Forum: General Discussion
Topic: Where to find a full ESP32 register addresses table in JSON format?
Replies: 0
Views: 1060

Where to find a full ESP32 register addresses table in JSON format?

I'm using micropython. I want to manually read/write ESP32-C3 registers by machine.mem32[xx]

I'm wondering where can we find a JSON format of full register table?
by gluuuyy
Sun Nov 13, 2022 11:37 am
Forum: ESP-IDF
Topic: Problem with low frequency PWM (LEDC)
Replies: 1
Views: 2237

Problem with low frequency PWM (LEDC)

I'm using ESP32C3. It has LEDC (and no MCPWM) Question 1: What's the min frequency of LEDC PWM? I tried with ledc example in IDF 4.4.2 and modified the number. The allowed min number of freq_hz was 10. But why isn't the min frequency 40MHz/(2^10+1)/(2^14)=2.38Hz ? (chapter 30.3.2.3 of technical refe...