Homemade Arduino Programmer

RE: Homemade Arduino Programmer

cstanton — Thu, 09 Feb 2017 14:43:50 GMT

This's super neat, thanks for sharing!

RE: Homemade Arduino Programmer

teprojects1 — Thu, 12 Jan 2017 15:28:14 GMT

Oh, It's really amazing engineering project. You are really good arduino programmer I like to do some arduino projects but I am confused with the concept of auduino that which one is better for my projects " Ultrasonic Sensor with Arduino "I mean by simple arduino or mega ?

RE: Homemade Arduino Programmer

evanpnz — Mon, 12 Dec 2016 19:27:45 GMT

Photoresist is definitely a good way to go. I used to use it in one of my jobs for short runs and prototypes, with ferric chloride etchant. You can just use the sun to expose it, though UV sources are much easier to arrange now than they were 30 years ago. Fine feature definition is good. You need to make sure your printer scale is correct first, for the transparencies. I used 1:1 tape, transfers and donuts back then. A glass sheet and plywood backing with some bulldog clips makes a usable exposure frame, though fancier setups exist. Go for it!

RE: Homemade Arduino Programmer

andycrofts — Fri, 09 Dec 2016 12:01:51 GMT

I also tried etching my own boards for another project, but gave up (Hydrochloric acid and Hydrogen Peroxide). The etchant works fine, just getting the damn toner onto the board failed.
In the end, I gave up. I then decided to us a 2-layer board, and meticulously checked the Gerber files with an on-line Gerber viewer. Then, I sent the boards to seeedstudio (eee isn't a typo) on their fusion page. It was cheap enough - about €15, IIRC for 10. vias included. Worked fine, and quality of board was professional.
Basically, the chemicals, PCB and toner ink for ONE board were more expensive. So, I don't bother with home-brew boards anymore. You've just gotta make absolutely sure you totally understand the datasheet of every IC you use, use LTspice for the analog mularkey.
Doing it this way encouraged me to take the time to check, check, and check again, so it HAS to work first time. In my case my only mistake on my project (data logger based around an XMEGA, flash ROM, A/D converter, 2G modem, lots of analog) was to forget a 100nf SMD cap. on the SIM-card's VDD line...It worked with 2V8 SDIM cards, not with 1V8 ones.

RE: Homemade Arduino Programmer

pixster — Tue, 06 Dec 2016 18:02:22 GMT

How about a Schematic and Code!

RE: Homemade Arduino Programmer

jw0752 — Mon, 14 Nov 2016 05:20:41 GMT

Hi Duncan,

I applaud your research and experimentation. As long as you don't give up it will get better and better. This is a great project.

John

RE: Homemade Arduino Programmer

ajens23 — Mon, 14 Nov 2016 01:58:13 GMT

Nice Job Duncan.

I've just about given up on etching boards. They do cut out pretty well with the CNC machine using micro mills and engraving bits.

One problem is getting it perfectly flat before milling.

Other challenge is getting the board located accurately enough to cut the flip side.

RE: Homemade Arduino Programmer

DAB — Sun, 13 Nov 2016 18:42:29 GMT

Great work.

Build a basic Arduino board is a good step towards mastering how to apply MCU's to applications.

Good job.

DAB