@ -20,7 +20,9 @@ Finally, the long announced Tonuino-PCB for Wemos' Lolin32 is [there](https://gi
* 08.12.2020: Reworked MQTT-timeout-Management
* 09.12.2020: mDNS-feature added. If tonuino's name is "tonuino", you can use `tonuino.local` instead it's of IP-address.
* 11.12.2020: Revised GUI-design (thanks @mariolukas for contribution!) + (untested) PCB added for Wemos Lolin D32 + gerberfiles for headphone-PCB
More to come...
* 18.12.2020: Added SD-MMC 1 Bit mode: This mode needs one PIN less and has almost double speed than SPI mode (thanks @tueddy for contribution!)
* 18.12.2020: Added support for the PN5180 reader. The PN5180 has better RFID range/sensitivity and can read ISO-15693 / iCode SLIX2 tags aka Tonies (thanks @tueddy for contribution!)
<br/>More to come...
## Known bugs
* Some webstreams don't run. Guess it's a combination of saturated connection-pool and lack of heap-memory. Works probably better if ESP32-WROVER is used, as this chip has PSRAM.
@ -47,7 +49,8 @@ The heart of my project is an ESP32 on a [Wemos Lolin32 development-board](https
* uSD-card: doesn't have to be a super-fast one; uC is limiting the throughput. Tested 32GB without any problems.
* uSD in SD-MMC (1 Bit) mode: Several devkits with onboard SD slot have support for this mode, e.g.: (https://de.aliexpress.com/item/4001229463219.html)
* optional replace the RFID-reader with a the better one: PN5180 comes with better RFID range, less power consumption and support for ISO-15693 / iCode SLIX2 tags (https://www.bing.com/shop?q=pn5180&FORM=SHOPTB)
Most of them can be ordered cheaper directly in China. It's just a give an short impression of the hardware; feel free to order where ever you want to. These are not affiliate-links.
@ -86,9 +89,8 @@ Depending on the develboard you're using and the needs you have, there are diffe
A lot of wiring is necessary to get ESP32-Tonuino working. After my first experiments on a breadboard I soldered all the stuff onto a board in order to avoid wild-west-cabling. Especially for the interconnect between uC and uSD-card-reader make sure to use short wires (like 10cm or so)! As of my experience with a breadbord, male/male-connectors are better than female/female-connectors. Important: you can easily connect another I2S-DACs by just connecting them in parallel to the I2S-pins (DIN, BCLK, LRC). This is true for example if you plan to integrate a [line/headphone-pcb](https://www.adafruit.com/product/3678). In general, this runs fine. But unfortunately especially this board lacks of a headphone jack, that takes note if a plug is inserted or not. Best way is to use a [headphone jack](https://www.conrad.de/de/p/cliff-fcr1295-klinken-steckverbinder-3-5-mm-buchse-einbau-horizontal-polzahl-3-stereo-schwarz-1-st-705830.html) that has a pin that is pulled to GND, if there's no plug and vice versa. Using for example a MOSFET-circuit, this GND-signal can be inverted in a way, that MAX98357.SD is pulled down to GND if there's a plug. Doing that will turn off the speaker immediately if there's a plug and vice versa. Have a look at the PCB-folder in order to view the detailed solution. Here's an example for such a [headphone-pcb](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) that makes use of GND.<br/>
Have a look at my PCB in the subfolder Hardware-Platforms/Wemos Lolin32. Probably this makes things easier for you.
## Wiring (2 SPI-instances)
Uses two SPI-instances. The first one for the RFID-reader and the second for SD-card-reader. This is also the setup, I personally use.<br/>
Uses two SPI-instances. The first one for the RFID-reader and the second for SD-card-reader. This is also the [setup, I personally use](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Wemos%20Lolin32).<br/>
| 5 V | SD-reader | VCC | Connect to p-channel MOSFET for power-saving when uC is off |
@ -131,6 +133,18 @@ Uses two SPI-instances. The first one for the RFID-reader and the second for SD-
Optionally, GPIO 17 can be used to drive a Mosfet-circuit in order to switch off peripherals (SD, Neopixel, RFID and MAX98357a) if ESP32 is in deepsleep. lease refer the schematics for my [Lolin32-PCB](https://github.com/biologist79/Tonuino-ESP32-I2S/blob/master/PCBs/Wemos%20Lolin32/Pictures/Tonuino-Lolin32-Schematics.pdf) for further informations. If you need further informations on transistor-circuits visit this [website](https://dl6gl.de/schalten-mit-transistoren.html). <br/>
In general I recommend using a [uSD-card-reader](https://www.ebay.de/itm/Micro-SPI-Kartenleser-Card-Reader-2GB-SD-8GB-SDHC-Card-3-3V-ESP8266-Arduino-NEU/333796577968) that can be run solely with 3.3V (doesn't have a voltage-regulator). This is because if 3.3V go through the voltage regulator a small voltage-drop will be introduced, which may lead to SD-malfunction as the resulting voltage is a bit too low. Vice versa if you want to connect your reader solely to 5V, make sure to have one WITH a voltage regulator :-). And by the way: when LiPo-battery is connected, there's no 5V. That's why I designed my [Lolin32-PCB](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Wemos%20Lolin32) with 3.3V only.
## Wiring (SD card in 1 Bit SD-MMC mode) different to above
| 2 | SD-reader | MISO | 10K hardware pullup may be required |
| 14 | SD-reader | SCK | |
SD-MMC mode requires these fixed PIN's. SD-MMC mode is almost twice as fast than SPI mode.
You find a good comparasion of different SD card modes here: (https://www.instructables.com/Select-SD-Interface-for-ESP32/)
Advice: Double check that above PIN's not used in otherway (PREVIOUS_BUTTON is mounted to SD MISO in default settings.h)
## Wiring (1 SPI-instance) [EXPERIMENTAL, maybe not working!]
Basically the same as using 2 SPI-instances but...
In this case RFID-reader + SD-reader share SPI's SCK, MISO and MOSI. But make sure to use different CS-pins. Have to admit I had some problems to get this running. Seems to be connected properly, but nothing happens when an RFID-tag is applied. Maybe anybody else wants to point out :-)
@ -170,9 +184,25 @@ In this case RFID-reader + SD-reader share SPI's SCK, MISO and MOSI. But make su
| 33 | Voltage-divider / BAT | | Optional: voltage-divider to monitor battery-voltage |
| 22 | Headphone jack | | Optional: if pulled to ground, headphone-volume is set |
## Wiring (PN5180 instead of MFRC522) different to above
PN5180 reader needs two more PIN's, RESET and BUSY. Double check PIN conflicts!
| 17 | PN5180 RFID-reader | 3.3V | Connect directly to GPIO 17 for power-saving when uC is off |
| GND | PN5180 RFID-reader | GND | |
| 21 | PN5180 RFID-reader | CS/SDA | Same as MFRC522. Don't share with SD! |
| 23 | PN5180 RFID-reader | MOSI | Same as MFRC522 |
| 19 | PN5180 RFID-reader | MISO | Same as MFRC522 |
| 18 | PN5180 RFID-reader | SCK | Same as MFRC522 |
| 16 | PN5180 RFID-reader | BUSY | be aware of SD MISO if running in SPI mode |
| 22 | PN5180 RFID-reader | RST | be aware of Headphone jack PIN |
## Wiring (custom) / different pinout
When using a develboard with SD-card-reader already integrated (Lolin D32 Pro, several TTGO-boards), the pinouts described above my not fit. Feel free to change them according your needs. Additionaly some boards may use one or some of the GPIOs I used for their internal purposes and that reason for are maybe not exposed via pin-headers. However, having them exposed doesn't mean they can be used without limits. This is because some GPIOs have to be logical LOW or HIGH at start/boot for example and this is probably not the case when connecting stuff to it. Feel free to adjust the GPIOs proposed by me (but be adviced it could take a while to get it running). If you encounter problems please refer the board's manual first. <br/>
[Here](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/Hardware-Plaforms/ESP32-A1S-Audiokit) I described a solution for a board with many GPIOs used internally and a very limited number of GPIOs exposed. That's why I had to use different SPI-GPIOs for RFID as well. Please note I used a slightly modified [RFID-lib](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/Hardware-Plaforms/ESP32-A1S-Audiokit/lib/MFRC522) there. Please note: the code-basis is outdated. Will need to re-integrate it into my master-branch...
## WiFi
WiFi is mandatory for webgui, FTP and MQTT. However, WiFi can be temporarily or permanently disabled. There are two ways to do that:
* Use a special modification-card that can be configured via webgui
#define MDNS_ENABLE // When enabled, you don't have to handle with Tonuino's IP-address. If hostname is set to "tonuino", you can reach it via tonuino.local
#define MQTT_ENABLE // Make sure to configure mqtt-server and (optionally) username+pwd
#define FTP_ENABLE // Enables FTP-server
#define NEOPIXEL_ENABLE // Don't forget configuration of NUM_LEDS if enabled
@ -12,12 +12,26 @@
#define MEASURE_BATTERY_VOLTAGE // Enables battery-measurement via GPIO (ADC) and voltage-divider
biologist79
5 years ago
GitHub