Search found 6 matches

by schuh8
Thu Nov 24, 2022 4:56 pm
Forum: Hardware
Topic: Whats using current during deep sleep?
Replies: 4
Views: 3143

Re: Whats using current during deep sleep?

Thank you very much for answering my question .. it helped me solve the problem. I would like to point out that the documentation you sent me to, is confusing to anyone but an expert in the field. The following two sentences in the wifi/BT section appear to conflict. -In Deep-sleep and Light-sleep m...
by schuh8
Wed Nov 23, 2022 4:53 pm
Forum: Hardware
Topic: Whats using current during deep sleep?
Replies: 4
Views: 3143

Re: Whats using current during deep sleep?

Thanks for the suggestion EDsteve. Problem is I can get low deep sleep current simply by uploading a short sketch with just a deep sleep command ... only about 0.2 ma. That would seem to indicate that the TTGO development board is smart enough to turn off the UART and any other peripherals that use ...
by schuh8
Wed Nov 23, 2022 2:03 am
Forum: Hardware
Topic: Whats using current during deep sleep?
Replies: 4
Views: 3143

Whats using current during deep sleep?

I have a TTGO T-Display board configured as a internet radio. If I upload a simple sketch which does nothing for 10 seconds and then goes to sleep for 10 seconds, the current draw is 42 ma while idleing and 0.2 ma when in deep sleep. So far so good. But if I upload the radio sketch it draws 130 ma w...
by schuh8
Wed Nov 16, 2022 8:16 pm
Forum: ESP32 Arduino
Topic: Newbie confusion on RTC pin numbering
Replies: 1
Views: 1299

Newbie confusion on RTC pin numbering

I am a relatively new esp32 + arduino IDE programmer trying to hold a pin low during sleep. The problem is that all the documentation refers to the RTC pins by two different designations. i.e. GPIO pin 14 on all diagrams is also referred to as RTC_GPIO16. When using that pin as an RTC pin do I refer...
by schuh8
Fri Jul 22, 2022 1:18 am
Forum: Hardware
Topic: Using the HSPI bus on the TTGO Display board
Replies: 1
Views: 1651

Using the HSPI bus on the TTGO Display board

I have been trying for quite a while to interface a VS1053 mp3 decoder board with a TTGO T-Display board (ESP32 development board with a built in TFT display). Although I have seen reports of successfully interfacing with an SD card board with the TTGO, nowhere can I find anyone who has done it with...
by schuh8
Sun Jul 03, 2022 4:58 pm
Forum: ESP32 Arduino
Topic: TTGO T Display & link to VS1053
Replies: 0
Views: 1804

TTGO T Display & link to VS1053

I have built a working internet radio using another display ESP32 display board and a VS1053 decoder board. Now I would like to substitute the TTGo T-Display board into that radio. The problem is with the SPI connections between the TTGO and the VS1053 which I am having trouble under standing. Below...