Comments on: DIY PID Controlled Soldering Hotplate http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/ Join the resistance. Mon, 14 May 2012 23:30:03 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: MightyOhm » Blog Archive » Issue with CD101 PID Controller stop mode http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-8659 MightyOhm » Blog Archive » Issue with CD101 PID Controller stop mode Thu, 20 Jan 2011 06:41:18 +0000 http://mightyohm.com/blog/?p=1010#comment-8659 [...] The CD101 is an inexpensive (under $40) PID controller sold by Sure Electronics. Aside from the incomplete documentation that is shipped with the unit, I’m pretty happy with this controller. I’m planning to use it to replace the failed PID controller that controls my soldering hotplate. [...] [...] The CD101 is an inexpensive (under $40) PID controller sold by Sure Electronics. Aside from the incomplete documentation that is shipped with the unit, I’m pretty happy with this controller. I’m planning to use it to replace the failed PID controller that controls my soldering hotplate. [...]

]]> By: MightyOhm » Blog Archive » Changes to the MightyOhm Wiki http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-7939 MightyOhm » Blog Archive » Changes to the MightyOhm Wiki Sat, 11 Dec 2010 21:47:07 +0000 http://mightyohm.com/blog/?p=1010#comment-7939 [...] Last night I added a list of cheap PID controllers to the wiki page for my DIY PID-controlled Soldering Hotplate. [...] [...] Last night I added a list of cheap PID controllers to the wiki page for my DIY PID-controlled Soldering Hotplate. [...]

]]> By: Jeff http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-7683 Jeff Thu, 25 Nov 2010 19:39:16 +0000 http://mightyohm.com/blog/?p=1010#comment-7683 I used ceramic insulators to insulate the hotplate from the aluminum base, and plastic feet on the aluminum plate to insulate it from the bench. If I was going to do it again, I would take a thin sheet of stainless steel and attach it to the SIDES of the hotplate with stainless spacers and hardware, then attach the stainless sheet to the base. I found that the ceramic insulators conduct quite a bit of heat, hopefully the thin stainless would conduct less. This is how I have seen others make hotplates, and it seems to work quite well. I used ceramic insulators to insulate the hotplate from the aluminum base, and plastic feet on the aluminum plate to insulate it from the bench.

If I was going to do it again, I would take a thin sheet of stainless steel and attach it to the SIDES of the hotplate with stainless spacers and hardware, then attach the stainless sheet to the base. I found that the ceramic insulators conduct quite a bit of heat, hopefully the thin stainless would conduct less. This is how I have seen others make hotplates, and it seems to work quite well.

]]> By: David Leggett http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-7677 David Leggett Thu, 25 Nov 2010 13:50:22 +0000 http://mightyohm.com/blog/?p=1010#comment-7677 I am thinking of building something similar to this hotplate. I am wondering what material you have used to insulate it from the bench. So far i have considered using calcium silicate to build a stand but your unit looks a bit more elegant! Nice work though, hope to hear you on The Am Hour again some time. I am thinking of building something similar to this hotplate. I am wondering what material you have used to insulate it from the bench. So far i have considered using calcium silicate to build a stand but your unit looks a bit more elegant!

Nice work though, hope to hear you on The Am Hour again some time.

]]> By: Electronics-Lab.com Blog » Blog Archive » PID Controlled Soldering Hotplate http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-6788 Electronics-Lab.com Blog » Blog Archive » PID Controlled Soldering Hotplate Mon, 20 Sep 2010 13:11:55 +0000 http://mightyohm.com/blog/?p=1010#comment-6788 [...] Controlled Soldering Hotplate – [Link] Tags: Hotplate, PID, Soldering Filed in Control, Soldering | 3 views No Comments [...] [...] Controlled Soldering Hotplate – [Link] Tags: Hotplate, PID, Soldering Filed in Control, Soldering | 3 views No Comments [...]

]]> By: Eko Yulianto http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-5633 Eko Yulianto Thu, 24 Dec 2009 13:10:10 +0000 http://mightyohm.com/blog/?p=1010#comment-5633 To Chris Taylor : If you want to use Triac, I recommended you to use optocoupler with zero crossing ability, place an optocoupler before triac will isolate the main power line and the phase control circuit, you can use MOC3041. To Chris Taylor :
If you want to use Triac, I recommended you to use optocoupler with zero crossing ability, place an optocoupler before triac will isolate the main power line and the phase control circuit, you can use MOC3041.

]]> By: Jeff http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-5589 Jeff Sat, 12 Dec 2009 02:11:11 +0000 http://mightyohm.com/blog/?p=1010#comment-5589 Chris, The solid state relay only switches once per second. This setting is configurable in the PID controller setup. I haven't had an issue with the relay or the ability of the PID to control the temperature, so I've been happy with 1 Hz so far. If you want to get fancy and use proportional control, you could use a triac instead and continuously vary the duty cycle of the heater. This is the recommend way to control cartridge heaters for max life, but I decided that heater life wasn't going to be an issue and opted for the simpler solution instead. If you decide to implement a proportional control please share your results! Jeff Chris,

The solid state relay only switches once per second. This setting is configurable in the PID controller setup.

I haven’t had an issue with the relay or the ability of the PID to control the temperature, so I’ve been happy with 1 Hz so far.

If you want to get fancy and use proportional control, you could use a triac instead and continuously vary the duty cycle of the heater. This is the recommend way to control cartridge heaters for max life, but I decided that heater life wasn’t going to be an issue and opted for the simpler solution instead.

If you decide to implement a proportional control please share your results!
Jeff

]]> By: Chris Taylor http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-5588 Chris Taylor Fri, 11 Dec 2009 05:20:39 +0000 http://mightyohm.com/blog/?p=1010#comment-5588 Great work with your setup! It has inspired me to try something similar with an old laboratory hot plate, fan, k-type thermocouple, and uC (so I can do temperature profiling). My one question for you is how well does the ssd relay work? Have you had trouble with them burning out? From what I have read they burn out if switched too fast (It isn't recommended to switch faster than 1Hz) and it seems like the PID controller would cause this. Is this completely off base? Thanks! Great work with your setup! It has inspired me to try something similar with an old laboratory hot plate, fan, k-type thermocouple, and uC (so I can do temperature profiling).

My one question for you is how well does the ssd relay work? Have you had trouble with them burning out? From what I have read they burn out if switched too fast (It isn’t recommended to switch faster than 1Hz) and it seems like the PID controller would cause this. Is this completely off base?

Thanks!

]]> By: Jeff http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-5329 Jeff Sat, 17 Oct 2009 17:39:06 +0000 http://mightyohm.com/blog/?p=1010#comment-5329 I have never used a PT100 sensor before. I don't see any reason why it wouldn't work, provided that your PID controller supports RTD sensors. Thermocouples are cheap and easy to work with, so I used them instead. I am not using a temperature profile. The hotplate stays at a constant temperature. I just place boards onto the hotplate and let them warm up, The thermal resistance and mass of the board determines the profile. Larger boards can take a long time, and boards without copper on the bottom take longer too. Not the most elegant setup, but it works great. I have never used a PT100 sensor before. I don’t see any reason why it wouldn’t work, provided that your PID controller supports RTD sensors. Thermocouples are cheap and easy to work with, so I used them instead.

I am not using a temperature profile. The hotplate stays at a constant temperature. I just place boards onto the hotplate and let them warm up, The thermal resistance and mass of the board determines the profile. Larger boards can take a long time, and boards without copper on the bottom take longer too. Not the most elegant setup, but it works great.

]]> By: Eko Yulianto http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/comment-page-1/#comment-5322 Eko Yulianto Thu, 15 Oct 2009 12:10:55 +0000 http://mightyohm.com/blog/?p=1010#comment-5322 Dear Jeff, I'm confusing for the sensor, I decided to make plate with 180mm x 120mm dimension, but my friend says to me for using PT100 not Thermocouple, please give me suggestions. And can you give me the profile for soldering profile, I'm also confused for the profile Dear Jeff,
I’m confusing for the sensor, I decided to make plate with 180mm x 120mm dimension, but my friend says to me for using PT100 not Thermocouple, please give me suggestions. And can you give me the profile for soldering profile, I’m also confused for the profile

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