axxaxx/axxsolder

STM32 Based soldering station for JBC cartridges, 9-24 VDC and USB-PD power

axxsolder's Issues

Implement READ/WRITE to EEPROM

By utilizing EEPROM one could for example:

• Remember SET Temperature - Save the current SET Temperature and automatically use that same value next time AxxSolder is powered on.
• Adjust EMERGENCY_SLEEP_TIME - Set the time for when AxxSolder will automatically go into sleep mode, currently set to 30 min.
• Set tuning parameters - allow the user to calibrate the temperature of AxxSolder and save the settings.

Detect if voltage is too low and do not to switch heater

Sometimes the temperature is calculated to be 10 deg too high for ~100 ms, fix this

Sometimes the temperature is calculated to be 10 deg too high for ~20 ms.

This is probably due to some sync issue with when the temperature is read.
In ordet to trouble shoot this, use one DAC channel on the MCU to measure and trigger a abnormal temperature measurement with an external oscilloscope.

Implement dual drive and dual TC amplifiers for JBC tweezers

If AxxSolder had a dual drive and dual thermocouple amplifiers it could be used to drive JBC tweezers.

Update Portable_connections.jpg with clear connections and connector name

LTC4440A-5 is too expensive. Can you exchange it for a cheaper one ?

Settings item to limit output power

Implement a setting where the user can limit the output power

e.g.

Limit power
0 - No limit except hard power limits specific for each cartridge type (NT115 - 20W, T210 - 60W, T245 - 120W)
10 - limit power to 10 W
20 - limit power to 20 W
...
110 - limit power to 110 W
120 - limit power to 120 W

Show pop-up when trying to start without a cartridge inserted

Show a pop-up with information about why you cant start heating when there is no cartridge in the handle

Add BOM with component cost

Hirose RPC1-12RB-6P(71) Obsolete

Hi. I stumbled upon your this and wanted to build a AxxSolder Portable. I was in the process of ordering Hirose RPC1-12RB-6P(71) from mouser and it's now listed as obsolete. I also tried some other electronics stores like digikey and they are also listing it as obsolete. Do you know of an alternative for this connector end?

Enable stand-by/sleep with buttonpress

Especially for the portable version, it would be nice to have the iron cool down with a press on the encoder. The iron could heat up again from the next press. It would act like toggling sleep mode which can now only be done by resting the iron on the AxxSolder.

Rework station enclosure design

Improvement of station enclosure to have a proper closed enclosure, good locations for screw threads where needed.

Pcb file

Hi where is the file to get pcb made ?

Move down screw terminal and display stand off in order to allow space for a M2.5 nut between main PCB and Display board

Remove unused ambient temperature sensor

The ambient temperature sensor TMP236AQDBZRQ1 is unused and could be removed from PCB to reduce cost and complexity.
Firmware needs to be updated to not show ambient temperature anymore

LCSC.com Part Numbers for v2.1 and v2.2

Hi,

Those are the part numbers for v2.1 and v2.2 from LCSC

Part (v2.1)	Part (v2.2)	LCSC.com/JLCPCB Part #	Footprint	Comment
C1, C6, C12, C14, C19	C1, C6, C12, C14, C19	C15850	Capacitor_SMD:C_0805_2012Metric	10u
C2, C3, C5, C7, C8, C9, C10, C11, C13, C20, C21, C22, C24	C2, C3, C5, C7, C8, C9, C10, C11, C13, C20, C21, C22, C24, C28, C29	C49678	Capacitor_SMD:C_0805_2012Metric	100n
C4, C17, C18	C4, C25, C27	C12891	Capacitor_SMD:C_1206_3216Metric	22u
--	C17, C18	C6119901	Capacitor_SMD:C_0805_2012Metric	22u
C25	--	C45783	Capacitor_SMD:C_0805_2012Metric	22u
C15, C16	C15, C16	C46653	Capacitor_SMD:C_0805_2012Metric	1n
C23	C23	C310841	EMZR500ARA331MJA0G:CAPAE1030X1050N	330u
C26	C26	C113832	Capacitor_SMD:C_0805_2012Metric	75p
D1, D3, D5, D6, D12	D1, D3, D5, D6, D12	C916425	BAT54S,215:SOT95P230X110-3N	BAT54S
D2	D2	C2687553	PMEG6020ER,115:PMEG6020ER115	PMEG6020ER
D4	D4
D7	D7	C503376	PMEG10030ELPX:SODFL4725X110N	PMEG10030ELPX
D8	D8	C707996	SMCJ24CA:DIONM7969X262N	SMCJ24CA
F1	F1	C352820	3557-2:3557-2	10AFuse
IC1	IC1	C688540	LTC4440AHMS8E-5#PBF:SOP65P490X110-9N	LTC4440AHMS8E-5#PBF
IC2	IC2	C529357	STM32G431KBT6:QFP80P900X900X160-32N	STM32G431KBT6
L1	L1	C2847543	INDPM7366X300N	SRP7028CC-100M
IC3	IC3	C2869735	TMP236AQDBZRQ1:SOT95P237X112-3N	TMP236AQDBZRQ1
IC4	IC4	C882727	OPA2333AIDRBR:SON65P300X300X100-9N-D	OPA2333AIDRBR
J1	J1
J4	J4
LS1	LS1	C391032	CMI-9653S-SMT-TR:CMI9653SSMTTR	CMI-9653S-SMT-TR
PS1	PS1	C115288	SOT230P700X190-4N	LD1117AS33TR
IC6	IC6	C311983	SOT95P280X110-6N	TPS54302DDCR
Q2	Q2	C551416	2N7002NXAKR:SOT95P230X110-3N	2N7002NXAKR
R1, R5, R6, R17, R25, R26	R1, R5, R6, R17, R25, R26	C17673	Resistor_SMD:R_0805_2012Metric	4k7
R2	R2	C17713	Resistor_SMD:R_0805_2012Metric	47k
R3	R3	C17772	Resistor_SMD:R_0805_2012Metric	6k8
R8, R9, R11, R12, R13, R14, R16, R18	R8, R9, R11, R12, R13, R14, R16, R18	C17414	Resistor_SMD:R_0805_2012Metric	10k
R10	R10	C346458	WSLP25122L500FEA:RESC6432X89N	2m
R15	R15	C17557	Resistor_SMD:R_0805_2012Metric	220
R19, R20	R19, R20	C4310	Resistor_SMD:R_0805_2012Metric	1k5
R21, R22	R21, R22	C17709	Resistor_SMD:R_0805_2012Metric	470k
R23, R24	R23, R24	C17556	Resistor_SMD:R_0805_2012Metric	220k
R27	R27	C17720	Resistor_SMD:R_0805_2012Metric	49.9
R28	R28	C149504	Resistor_SMD:R_0805_2012Metric	100k
R29	R29	C17446	Resistor_SMD:R_0805_2012Metric	13k3
U1	U1
U2	U2	C2760081	BSC014N04LS:BSC014N04LS	BSC014N04LS

I've orders the boards, but please bear in mind I've not tested them yet.

update
included the v2.2 components

Stand temperature instead of full cooldown

First of all, thank you for this awesome project and the support you provided via email. First station is done and working!

I noticed that the iron fully cools down in the stand. As i remember the JBC stations just reduce the temperature to 150°C or something. Someone told me that would reduce the stress and oxidation of the tips. I can´t confirm that but it sounds plausible.

After 10-15 minutes the JBCs shut off the heaters completly.

Implement automatic detection of handle T210/T245

This can be done as the T210 has pin 5 and 6 connected internally in the handle connector.

Use one of the inputs.

Now the tipchanger and stand has one input each. That is not necessary.

Replace big automotive fuse with something smaller and SMD

For example: https://www.littelfuse.com/products/fuse-blocks-fuseholders-and-fuse-accessories/fuse-blocks/154.aspx

Implement automatic emergency sleep if the handle is left ON for a long time

Read board version at startup

Read the bits USR_1,2,3 at startup and save the board version these bits represent.

Update enclosure to better fit/hold power connector

At the moment the PP45 power connector has to be glued with epoxy in place.
This solution should be reworked where mounting and selection of connector is considered.

Individual tip calibrations

One of the things that is great about the custom firmware for the STM32 T12/C245 stations, is the ability to save individual tip calibrations, since even with genuine JBC tips, different versions/models have varying temperatures, with the clone tips even more so. I have both Unisolder and Aixun T3A, neither offers this capability, so if you have cartridges that don't match the built-in tip profiles, you are out of luck. With Unisolder these profiles can only be modified through firmware change, if you understand the code, and how the author coded it. With the Aixun T3A, you can change the calibration profile through a number of temperature steps, but it has two problems. First, it is not tip specific, Two even though it saves the value, this is change is never displayed to the user, so when you go back into the menu, all setting show with no changes.

Implement feed forward control loop

Implement feed forward control to achieve even better temperature contol

Schedule for V3.0

Is there any rough schedule available for V3.0 release? I think about waiting for the V3.0 release.

Utilize current measurement for "no-tip-detection"

The board is equipped with a current shunt. The voltage over the shunt is amplified with the on-board OP-amp and measured with the STM32 ADC.

By measuring the current it should be possible to detect if a tip is missing and/or broken. This requires some clever timing and measurement during the high-phase of the PWM.

At the moment the actual temp shows ~567 deg C when no tip is attached. It would be nice if AxxSolder detected a "no-tip" status.

Replace expensive DC/DC to cheaper alternative

Replace expensive TRACO Power TSR 2-2450 DC/DC to cheaper alternative.

Perhaps on-board DC/DC solution designed around the TPS54302DDCT
https://www.ti.com/product/TPS54302/part-details/TPS54302DDCT

Firmware upload via USB

Implement hardware so that the user can update firmware over USB instead of needing to own a SWD programmer.

Sometimes miss current measurement

AxxSolder seems to miss current measurement and shows " --- " as temperature for approximately 0.25 s every 10 minutes.

It basically blinks " --- " very fast and then back to showing actual temperature.

This is probably due to the ADC not being read at the correct time at some points.

Does not effect the thermal performance.

Filter buttonpress input as handle input and stand input

Sometimes Axxsolder goes into sleep mode when changing themperature with the knob. This is probably due to noice on the encoder button, this signal should be filtered. Have to look into this

Maybe u can change CMI-9653S-SMT-TR for something more popular and available? Ordering it from mouser doesnt make sensie for me and i cant find it anywhere else.

          Maybe u can change CMI-9653S-SMT-TR for something more popular and available? Ordering it from mouser doesnt make sensie for me and i cant find it anywhere else.

Originally posted by @Froglol in #26 (comment)

Power via USB-C PD

Implement a USB-C Power delivery negotiation circuit.
Today USB-C PD can deliver up to 100W, whis is enough for C210 cartridges which draw up to ~60W.
C245 cartridges on the other hand draw ~120W and can not be powered of such a solution (as of today).

Implement a clamping anti-windup method

The current anti-windup limits the I-part but does not stop integration.
A better anti-windup scheme would be like the "clamping" method used in the simulink PID block:
https://se.mathworks.com/help/simulink/slref/pidcontroller.html

clamping
Integration stops when the sum of the block components exceeds the output limits and the integrator output and block input have the same sign. Integration resumes when the sum of the block components exceeds the output limits and the integrator output and block input have opposite sign. Clamping is sometimes referred to as conditional integration.

Automatically detect USB-PD supply capability and limit power

Automatically ask USB-PD supply of it's power capability with the STUSB4500 negotiation chip and limit the output power based on the capability.

There is currently no such check and if you power AxxSolder with a 65W capable USB-PD source and try to use a C245 cartridge (which will draw 120W) AxxSolder turns off as the supply voltage can not be kept by the supply.

DFU Fails

Hi there

I'm having an issue updating firmware over DFU. I connect the device to my Mac whilst holding the right most button. CubeProgrammer will detect the device for 5-6 seconds and then nothing. This obviously does not leave enough time to upload the firmware. I do not have an STLink programmer to test with.

Any suggestions? I assume I don't have to keep the button held?

Connect tip of soldering iron to protective earth (PE). This reduces the risk of ESD damage

Is support for tweezers possible, such as the AN115?

As mentioned in the title, this would be a standout feature that many are probably waiting for.

Thanks
Marco

Screen rotation

Make screen rotation a flash setting and allow the screen to rotated 0, 90, 180, 270 deg