https://github.com/tux-friend/minimal-reflow-plate
A DIY heat plate for soldering / reflow with an ESP32 and SSR
https://github.com/tux-friend/minimal-reflow-plate
esp32 micropython pcb pid reflow-oven-controller soldering
Last synced: 3 months ago
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A DIY heat plate for soldering / reflow with an ESP32 and SSR
- Host: GitHub
- URL: https://github.com/tux-friend/minimal-reflow-plate
- Owner: tux-friend
- License: gpl-3.0
- Created: 2023-05-27T13:50:03.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2023-05-29T09:38:36.000Z (about 2 years ago)
- Last Synced: 2025-02-15T21:44:40.608Z (5 months ago)
- Topics: esp32, micropython, pcb, pid, reflow-oven-controller, soldering
- Language: Python
- Homepage:
- Size: 1.18 MB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# minimal-Reflow-Plate
A DIY heat plate for soldering / reflow with an ESP32 and SSR
For creating my PCB projects I ordered a heating plate and did the reflow process manually -- switching the plate on and off with a fuse... Then ordered a Solid State Relay (SSR), MAX6675 with thermocouple and a 220V to 5V converter. Together with an ESP32, button, switch and OLED Display I created this minimal example of an reflow oven/plate.
The code is originally generated by ChatGPT - e.g. the PID control section. The plotting of the profile I needed to modify, also added button input functionality. The profile is for Sn63/Pb37 soldering paste but can be changed easily. The OLED display shows the setpoints of the profile as little crosses in a time vs. temperature diagram. The measured temperature is plotted every second.
Inspiration and code snippets I used from [Tiny Reflow Controller with OLED display](https://www.electronics-lab.com/project/tiny-reflow-controller-oled-display/) and from [uReflowOven](https://github.com/dukeduck1984/uReflowOven-Esp32-Micropython) (here you also find leadfree reflow profile).
Code is clearly not perfect, but it works quite nicely.
## Images
## Parts List
Parts mainly from AliExpress, total costs: ~25$.
|Part |Price [$] |
|--------------------------------------------------|-----------|
|ESP32-C3 Board |6.00 |
|600W heating plate |[4.10](https://www.aliexpress.com/item/1005004501086557.html)|
|220V to 5V converter |[1.80](https://www.aliexpress.com/item/33011812383.html)|
|Solid State Relay 25A |[3.90](https://www.aliexpress.com/item/1005003670878216.html)|
|MAX6675 |[2.90](https://www.aliexpress.com/item/32841448771.html)|
|Thermocouple K probe |[1.50](https://www.aliexpress.com/item/4000360348464.html)|
|OLED Display |[2.50](https://www.aliexpress.com/item/32957309383.html)|
|Buttons / Switch |0.50 |
|Wood, Screws, Cables |2.00 |