DIY Cooking Temperature Meter: Difference between revisions
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=== ESP32 === | === ESP32 === | ||
The VIN pin (sometimes labeled V5 or V5.0) can be used to power the ESP32 with an external regulated 5V DC power source | Powering | ||
* The VIN pin (sometimes labeled V5 or V5.0) can be used to power the ESP32 with an external regulated 5V DC power source | |||
* you can power your ESP32 development board via the 3V3 pin. | |||
=== Battery Pack === | === Battery Pack === | ||
Revision as of 15:14, 3 July 2026
Introduction
A simple (but updatable) cooking thermometer based on ESP32.
Functions
- Measure, log, display and save the temperature
- Send data using bt or create a local web server which shows the data.
- Allow taking timed photos (a photo at a given time) and show it on a (saved) temp log.
Material
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The ESP 32
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The front side of the ESP32 with the display
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The battery shield from the front.
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The battery shield from the back. The two leds1, L1 and L2 are in the middle of the board.
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A sample file from the provider.
- ESP32: ideaspark® ESP32 Entwicklungsboard 1,14 Zoll 135x240 full color LCD-Display,CH340,WiFi+BL. ST7789 driver, I2C. CH340
- Display area: 14.864 × 24.912 mm2
- Panel size: 17.6 × 31.0 × 1.6 mm3
- Display current 20mA.
- Display ports: VCC: VCC, GND: GND, D2(GPIO2): DC, D4: RST, D15: CS, D18: SCLK, D23: MOSI, D32: BLK.
- Temperature probe; THERMOPRO copy (including TP20, TP17, and TP-16, TP-16S,TP08S, TP25, TP07, TP17H, TP27, TP06S, TP09, TP28). Max temp 380°C (716°F) with 3.5 mm stereo jack.
- Battery pack: Battery Shield V3 Raspberry Pi / Arduino / ESP32 - 1x 18650 (from FunDuino)
ESP32
Powering
- The VIN pin (sometimes labeled V5 or V5.0) can be used to power the ESP32 with an external regulated 5V DC power source
- you can power your ESP32 development board via the 3V3 pin.
Battery Pack
No reverse voltage protection!
The charging voltage is 4.2 V and the charging current is 500 mA. Note the on/off switch, when plugging or unplugging the lipo battery, the On/OFF switch only switches the USB port. The 3 x 3 V and 3 x 5 V solder pins cannot be switched on and off by this switch
Deep discharge protection
The charging process on the module is indicated by a LED. Red means that the battery is charging and green signifies that charging is complete.
The battery shield connec
