Cons-n-Stuff/Solder-Plate
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README.md
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@ -42,7 +42,9 @@ This repository contains the source code and design files for a Solder Plate Con
### Hardware Setup
1. **PCB Fabrication:** Fabricate the PCB using the provided gerber files. You can use these to order the naked PCB from services like JLCPCB
*** MAKE SURE YOU ORDER THE HOTPLATE IN BLACK. IT WILL NOT DISCOLOR AND HOLDS UP A LOT BETTER TO HEAT CYCLES ***
1. **PCB Fabrication:** Fabricate the PCB using the provided gerber files. You can use these to order the naked PCB from services like JLCPCB.
2. **Component Assembly:** Solder the components onto the PCB as per the schematic or choose a SMT assembly service like the ones from JLCPCB
3. **Power Supply Connection:** Choose a suitable power supply. 12V 5A tested, 24v 5A compatible. Use of more then 5A requires a appropriate FUSE to be chosen and solder on place of F1
@ -89,7 +91,31 @@ JCM from the Discord explained the process pretty good:
8. Press Go
3. **Setting up the controller**
1. Order 100K NTC Glass thermistors Use for dev was : 100K Ohm Resistor NTC 3950-> https://www.aliexpress.com/item/32862228715.html?spm=a2g0o.order_list.order_list_main.11.1f0a1802Lw8YGL
2. Using either the potentiometer or soldering the resistor beside it choose the resistor reference value (2.5Kohm is standard)
3. You can modify the thermistor settings in Global.ccp file, it is all explained in there
4. Attach the sensors to the hotplate using High tem Kapton Tape
5. Reccomended is 3 sensors on the bottom middle of plate all with 3 different refernece resistor values for accuracy across all temperature ranges and 1 thermistor held by a pair of helping hangs placed so the head touches somewhere on the PCB to be refllowed
By default this is set as thermistor 1:
Here are the defualt thermistor settings:
Thermistor thermistor1(THERMISTOR1_PIN, 2545 , ThermistorZ_Placement::ON_PCB, ThermistorXY_Placement::MIDDLE); -> 2545Kohm set refrence
Thermistor thermistor2(THERMISTOR2_PIN, 2125, ThermistorZ_Placement::BOTTOM, ThermistorXY_Placement::MIDDLE); - > 2125Kohm set refrence
Thermistor thermistor3(THERMISTOR3_PIN, 9100, ThermistorZ_Placement::BOTTOM, ThermistorXY_Placement::MIDDLE_LOW_TEMP); -> 9100Kohm set refrence
Thermistor thermistor4(THERMISTOR4_PIN, 564, ThermistorZ_Placement::BOTTOM, ThermistorXY_Placement::MIDDLE_HIGH_TEMP);564Kohm set refrence
These settings are measured between a GND point anywhere on the board and the LEFT pin of the connector with the thermistor UNPLUGGED
you can measure and set those to the preset values or modify the values in globals.ccp to match your thermistors.
If a thermistor is set to bottom a automatic scaling factor for the difference difference in plate temp is set that was aquired through lots of datalogging and computations
If a thermistor is set to SIDE there is no scaling factor and will throw off the reading acorss the center of the plate (overall will be lower)
When using the Thermistor with placement "ON_PCB" That thermistor has a weighting factor of 10 and has the biggest effect on the read temperature.
The normal weighting factor is between 0.1 and 1.5 for the others.
### Software Installation