good day d0ughb0y
i received my
MOD-WIFI-ESP8266-DEV
when you will update the apex ?
thanks
on official espressif.com forum (esp8266.com is not the official site
), someone described the flash memory layout that I understood, and recompiled the firmware so it will work on 512kb flash. I think it works (but not 100% certain).
http://bbs.espressif.com/viewtopic.php?f=16&t=400&start=10#p1662
I am working on the schematic of the led controller. Since I have to limit the board size to 10cmx10cm, I used the esp-01 module for now (I am assuming 512kb flash can still work). Otherwise, it should be simple to wire any other esp module to the esp-01 pins on the board in place of esp-01.
My initial design is for 6-channel pwm (you can use 1 to 6 meanwell LDDs), plus 2 fan drivers. This is what it currently looks like. I need to add mounting holes at the corners, and t is still missing temp probe connection, and I am going to add pin headers to certain signals in the blank space area, like 48V, 12V, 3.3V, I2C, OneWire for temp probe, LED, Serial, Reset, etc. for connecting to other components or if the board is going inside an enclosure. I initially did not plan to use a microSD card, but I added it to the circuit just in case.
The 7805 voltage regulator in the circuit is actually this buck converter from digikey
http://www.digikey.com/product-detail/en/0/945-1648-5-ND
It has the same footprint as a TO-220 7805 regulator.
I added a DC power jack for supply 12v power from a wall wart to power the fans and the teensy circuit. However, I think a good option (for more hardcore DIYers) is to use a buck converter that can take 48V input from LED power supply and set the output to 12v, like this one
http://www.ebay.com/itm/LM2596HV-DC...462?pt=LH_DefaultDomain_0&hash=item5d56baf4c6
I plan to get some initial boards done then I can focus on software, which is probably 90% of the work on this.
comments/suggestions on circuit, features, etc. are welcome.