Da Vinci 1.0a replacement for bed thermistor

thingiverse

2018/03/08 update continues to perform flawlessly without any need for readjustment. I have successfully replaced the heated bed thermistor with a working alternative that accurately measures 300k when cold, registering at 18 degrees Celsius. Initially, three 100k thermistors were placed in series under the center of the bed. During printing, temperatures ranged from 110c to 122c, as confirmed by my tests. To achieve more precise temperature control, I conducted a second test using four 100k thermistors in series. The results showed that while printing, temperatures stabilized between 75c and 85c. My next experiment involved combining three 100k thermistors in series with a 100k trim pot in the same circuit. While slowly adjusting the temperature during printing, I was able to achieve a stable reading of 88c to 95c. These thermistors are strategically positioned under the center of the bed to ensure even heat distribution. This modification was necessary because my previous attempts at achieving consistent temperatures throughout the print bed were unsuccessful, as parts being printed tended to retain heat only in the center area. For those interested in replicating this setup, I have listed a source for 100k thermistors: http://a.co/aj6Jm3y. Additionally, my system now features a 10A aluminum bed, which has improved overall performance. Overview and Background: This endeavor was motivated by the need to address inconsistent temperature readings throughout the print bed. By positioning thermistors under the center of the bed, I aimed to achieve more uniform heating patterns during printing. Lesson Plan and Activity: