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Geekcreit Mega +WiFi R3 Module ATmega2560+ESP8266 32Mb Memory USB-TTL CH340G
₹1,797.97 ₹2,226.26

Q: Is the very simple 5V -> 3,3V logic level conversion design for ESP-RX/ESP-TX signals really safe? Especially the TX seems unsafe since current will be flowing in the reverse direction when TX high. What about the low-power modes?

Asked by BG933813383 on 2020-10-14 11:30:47

GMMAnonymus I have used this board with ESP-Link, (which makes it work as a transparent telnet bridge) to send commands or data to Mega through WiFi and vice versa (Mega sending a response to ESP) with no problems over 1 year of usage. I'm assuming it is safe.

2021-03-05 01:04:37 Helpful (0)
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BG933813383 11/10/2020
Nice product with high quality. Excellent instructions. The only minor problem was to solder the large BNC connector pins to the board (the tin does not easily flow out to make a good soldering connection). It would also be a good idea to indicate the tolerance of the 0 V measurements in step 5. "0 V" means within a couple of mV, but what is the expected limit?
Original JYETech 15801K DIY WAVE2 DSO150 Touch Screen Dual Channel Digital Storage Oscilloscope Kit
₹4,881.67 ₹6,080.89
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Aluminum Heat Sink Heat Sink For TO-220 L780xCV Three Terminal Positive Voltage Regulator
₹164.46 ₹307.51

Q: What is the thermal resistance (deg C/W) heat sink to air?

Asked by BG933813383 on 2020-10-21 04:26:05

caractacus With no airflow, about 50°CWatt.

2020-11-15 10:07:03 Helpful (0)
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